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HomeMy WebLinkAbout1991-3344 Flood PreventionORDINANCE NO.1' 03 3 4 4 AN ORDINANCE relating to building regulations; defining terms, adopting standards and requiring a development permit and providing for the administration of the standards and requirements for constructing in areas of special flood hazard and floodways; amending sections 11.58.030, 11.58.050, 11.58.060, 11.58.130, 11.58.150, 11.58.160, 11.58.170, and enacting a new section, 11.58.180, all of the City of Yakima Municipal Code. BE IT ORDAINED BY THE CITY OF YAKIMA: Section 1: Section 11.58.030 of the City of Yakima Municipal Code is hereby amended to read as follows: "11.58.030 Definitions. Unless specifically defined below, words or phrases in this chapter shall be inter- preted so as to give them the meaning they have in common usage and to give this chapter its most reasonable appli- cation. The following words, phrases, and terms as used in this chapter shall have the following meaning ascribed to them, unless a different meaning clearly appears from the context: 'Appeal' means a request for a review of the interpretation by the director of community and economic development of any provision of this chapter or a request for a variance. 'Area of shallow flooding' means a designated AO or AH zone on the Flood Insurance Rate Map (FIRM). The base flood depth range from one to three feet; a clearly defined channel does not exist; the path of flooding is unpredictable and indeterminate; and, velocity flow may be evident. AO is characterized as sheet flow and AH indicates ponding. 'Area of special flood hazard' means the land in the floodplain within a community subject to a one per- cent or greater chance of flooding in any given year. Designation on maps always includes the letters A or V. 'Base flood' means the flood having a one percent chance of being equalled or exceeded in any given year. Also referred to as the '100 -year flood.' Designation on maps always includes the letters A or V. 'Critical facility' means a facility for which even a slight chance of flooding might be too great. Critical facilities include, but are not limited to schools, nursing homes, hospitals, police, fire and emergency response installations, installations which produce, use, or store hazardous materials or hazardous waste. 'Development' means any man-made change to im- proved or unimproved real estate, including but not Cord/flood) - 1 - limited to buildings or other structures, mining, dredg- ing, filling, grading, paving, excavation or drilling operations located within the area of special flood hazard. 'Flood' or 'flooding' means a general and tem- porary condition of partial or complete inundation of normally dry land areas from: 1. The overflow of inland or tidal waters; and/or 2. The unusual and rapid accumulation of runoff of surface waters from any source. 'Flood Insurance Rate Map' (FIRM) means the official map on which the Federal Insurance Administra- tion has delineated both the areas of special flood hazards and the risk premium zones applicable to the community. 'Flood Insurance Study' means the official report provided by the Federal Insurance Administration that includes flood profiles, the Flood Boundary-Floodway Map, and the water surface elevation of the base flood. 'Floodway' means the channel of a river or other watercourse and the adjacent land areas that must be reserved in order to discharge the base flood without cumulatively increasing the water surface elevation more than one foot. 'Lowest floor' means the lowest floor of the lowest enclosed area (including basement). An unfinished or flood resistant enclosure, usable solely for parking of vehicles, building access or storage, in an area other than a basement area, is not considered a building's lowest floor; provided, that such enclosure is not built so as to render the structure in violation of the appli- cable nonelevation design requirements of this chapter found in Section 11.58.150 2. 'Habitable floor' means any floor usable for living purposes, which includes working, sleeping, eating, cooking or recreation, or a combination thereof. A floor used only for storage purposes is not a 'habi- table floor.° 'Manufactured home' means a structure, transport- able in one or more sections, which is built on a perma- nent chassis and is designed for use with or without a permanent foundation when connected to the required utilities. For floodplain management purposes the term 'manufactured home' also includes park trailers, travel trailers, and other similar vehicles placed on a site for greater than one hundred eighty consecutive days. For insurance purposes the term 'manufactured home° does not include park trailers, travel trailers, and other similar vehicles. 'Manufactured home park or subdivision' means a parcel (or contiguous parcels) of land divided into two or more manufactured home lots for rent or sale. - 2 (ord/flood) • • • 'New construction' means structures for which the 'start of construction' commenced on or after the effec- tive date of the ordinance codified in this chapter. 'Shall' means: 1. With respect to the functions and powers of the director of community and economic development, any agents and employeesof the City of Yakima authorized hereunder, direction and authorization to act in the exercise of sound discretion and good faith. 2. With respect to the obligation upon owners and occupants of premises and their agents, a mandatory requirement to act in compliance with this chapter at the risk of civil and criminal liability upon failure so to act. 'Start of construction' includes substantial improvement, and means the date the building permit was issued, provided the actual start of construction, re- pair, reconstruction, placement or other improvement was within one hundred eighty days of the permit date. The actual start means either the first placement of perma- nent construction of a structure on a site, such as the pouring of slab or footings, the installation of piles, the construction of columns, or any work beyond the stage of excavation; or the placement of a manufactured home on a foundation. Permanent construction does not include land preparation, such as clearing, grading, and filling; nor does it include the installation of streets and/or walkways; nor does it include excavation for a basement, footings, piers, or foundation or the erection of tem- porary forms, nor does it include the installation on the property of accessory buildings, such as garages or sheds not occupied as dwelling units or not part of the main structure. 'Structure' means a walled or roofed building or manufactured home, including a gas or liquid storage tank that is principally above ground. 'Substantial improvement' means any repair, reconstruction, or improvement of a structure, the cost of which equals or exceeds fifty percent of the market value of the structure either: 1. Before the improvement or repair is started; 2. If the structure has been damaged and is being restored, before the damage occurred. For the purposes of this definition, 'substantial improvement' is considered to occur when the first alteration of any wall, ceiling, floor, or other structural part of the building commences, whether or not the alteration affects the external dimensions of the structure. The term does not, however, include either: 1. Any project for improvement of a structure to comply with existing state or local health, sanitary, or safety code specifications which are solely necessary to assure safe living conditions; or or (ord/flood) - 3 - 2. Any alteration of a structure listed on the National Register of Historic Places or a State Inventory of Historic Places. 'Variance' means a grant of relief from the requirements of this chapter which permits construction in a manner that would otherwise be prohibited by this chapter." Section 2: Section 11.58.050 of the City of Yakima Municipal Code is hereby amended as follows: "11.58.050 Adoption of Flood Insurance Study - Estab- lishing areas of special flood hazard. A. 'The Flood Insurance Study for the City of Yakima," dated June 15, 1981, 'or as amended' and the "Flood Insurance Study: Yakima County Washington Unincorporated Areas," dated December 5, 1984, or as amended, for the County of Yakima for areas annexed into the City of Yakima after December 1, 1981, (three copies of which are filed with the office of the Yakima city clerk) are adopted as an official study and official maps of the city of Yakima; and as by this reference declared to be a part of this chapter and incorporated in this subsection. B. The areas of special flood hazard identified by the official study and maps adopted by subsection A of this section are designated and established as special flood hazard areas for the purpose of interpreting and administering this chapter." Section 3: Section 11.58.060 of the City of Yakima Municipal Code is hereby amended as follows: "11.58.060 Compliance. No structure or land hereafter shall be constructed, located, extended, converted, or altered without full compliance with the terms of this chapter and other applicable laws, rules, and regula- tions. In addition to any other penalty or remedy avail- able by law, a civil penalty of not more than five - thousand dollars ($5,000) per violation may be imposed upon any person, firm, or corporation which violates the provisions of this title, and in addition, the eILy of Yakima shall be entitled to its costs and expenses in- cluding a reasonable attorney fee. The city attorney is authorized to collect the civil penalty by appropriate legal remedies. Nothing herein contained shall prevent the city of Yakima from taking such other lawful action as is necessary to prevent or remedy any violation." Section 4: Section 11.58.130 of the City of Yakima Municipal Code is hereby amended as follows: "11.58.130 Variance procedure. For the purpose of this section, hearing examiner shall have the same meaning as - 4 (ord/flood) • • 1 in Section 15.02.020 of the City of Yakima Municipal Code. A. Appeal. 1. The hearing examiner of the city shall hear and decide appeals and requests for variances from the requirements of this chapter. 2. The hearing examiner shall hear and decide appeals when it is alleged there is an error in any requirement, decision, or determination made by the director of community and economic development in the enforcement or administration of this chapter. 3. Those aggrieved by the decision of the hear- ing examiner or any taxpayer, may appeal such decision to the council following the appeal procedures outlines in Chapter 1.43 of the City of Yakima Municipal Code. 4. In passing upon such applications, the hear- ing examiner shall consider all technical evaluations, all relevant factors, standards specified in other sec- tions of this chapter, and: (a) The danger that materials may be swept onto other lands to the injury of others; (b) The danger to life and property due to flooding or erosion damage; (c) The susceptibility of the proposed facility and its contents to flood damage and the effect of such damage on the individual owner; (d) The importance of the services provided by the proposed facility to the community; (e) The necessity to the facility of a waterfront location, where applicable; (f) The availability of alternative locations, for the proposed use which are not subject to flooding or erosion damage; (g) The compatibility of the proposed use with existing and anticipated development; (h) The relationship of the proposed use to the comprehensive plan and floodplain management program for that area; (i) The safety of access to the property in times of flood for ordinary and emergency vehicles; (j) The expected heights, velocity, duration, rate of rise, and sediment transport of the flood waters and the effects of wave action, if applicable, expected at the site; and (k) The costs of providing governmental services during and after flood conditions, including maintenance and repair of public utilities and facilities such as sewer, gas, electrical, and water systems, and streets and bridges. 5. Generally, variances may be used for new construction and substantial improvements to be erected on a lot of one-half acre or less in size contiguous to and surrounded by lots with existing structures con- structed below the base flood level, providing subsection (ord/flood) - 5 - (A)(4)(a)-(k) of this section has been fully considered. As the lot size increases beyond the one-half acre, the technical justification required for issuing the vari- ances increases. 6. Upon consideration of tion (A)(4) of this section and the factors of subsec- the purpose of this chapter, the hearing examiner may attach such conditions to the granting of variances as it deems necessary to further the purposes of this chapter. The director of community and economic development shall maintain the records of all appeal actions and report any variances to the Federal Insurance Administration upon request. B. Conditions for Variances. 1. Variances may be used for the reconstruction, rehabilitation or restoration of structures listed on the National Register of Historic Places or the State Inven- tory of Historic Places, without regard to the procedures set forth in the remainder of this section. 2. Variances shall not be issued within any designated floodway if any increase in flood levels during the base flood discharge would result. 3. Variances shall only be issued upon a deter- mination that the variance is the minimum necessary, considering the flood hazard, to afford relief. 4. Variances shall only be issued upon: (a) A showing of good and suffi (b) A determination that fai variance would result in exceptional applicant; and (c) A determination that ance will not result in increased al threats to public safety, expense, create nuisances, cause tion of the public as identified this section or conflict with ordinances. 5. Variances as interpreted in the National Flood Insurance Program are based on the general zoning law principle that they pertain to a physical piece of property; they are not personal in nature and do not pertain to the structure, its inhabitants, economic or financial circumstances. They primarily address small lots in densely populated residential neighborhoods. As such, variances from the flood elevations should be quite rare. cient cause; lure to grant the hardship to the the granting of a vari- flood height, addition - extraordinary public fraud on or victimiza- in subsection (A)(4) of existing local laws or 6. Variances may be used for nonresidential buildings in very limited circumstances to allow a lesser degree of floodproofing than watertight or dry- floodproofing, where it can be determined that such action will have low damage potential, complies with all other variance criteria except subsection (8)(5) of this section, and otherwise complies with Section 11.58.140. 7. Any applicant to whom a variance is granted shall be given written notice that the structure will be • (ord/flood) - 6 - • • permitted to be built with a lowest floor elevation below the base flood elevation and that the cost of flood insurance will be commensurate ''with the increased risk resulting from the reduced lowest floor elevation." Section 5. Section 11.58.150 of the City of Yakima Municipal Code is hereby amended to read as follows: "11.58.150 Specific standards. In all areas of special flood hazards where base flood elevation data has been provided as set forth in Section 11.58.050 or Section 11.58.120, the following provisions are required: 1. Residential Construction. (1) New construction and substantial improvement of any residential structure shall have the lowest floor, including basement, elevated one foot or more above base flood elevation. (2) Fully enclosed areas below the lowest floor that are subject to flooding are prohibited, or shall be designed to automatically equalize hydrostatic flood forces on exterior walls by allowing for the entry and exit of floodwaters. Designs for meeting this require- ment must either be certified by a registered profession- al engineer or architect or must meet or exceed the following minimum criteria: (a) A minimum of two openings having a total net area of not less than one square inch for every square foot of enclosed area subject to flooding shall be pro- vided. (b) The bottom of all openings shall be no higher than one foot above grade. (c) Openings may be equipped with screens, lou- vers, or other coverings or devices; provided, that they permit the automatic entry and exit of floodwaters. 2. Nonresidential Construction. (1) New construction and substantial improvement of any commercial, industrial or other nonresidential structure shall either have the lowest floor, including basement, elevated onefoot or more above the level of the base flood elevation; or, together with attendant utility and sanitary facilities, shall: (a) Be floodproofed so that below one foot above the base flood level the structure is watertight with walls substantially impermeable to the passage of water; (b) Have structural components capable of re- sisting hydrostatic and hydrodynamic loads and effects of buoyancy; and (c) Be certified by a registered professional engineer or architect that the design and methods of construction are in accordance with accepted standards of practice for meeting provisions of this subsection based on their development and/or review of the structural design, specifications, and plans. Such certifications (ord/flood) 7 shall be provided to the official as set forth in Section 11.58.120 3(2). (2) Nonresidential structures that are elevated, not floodproofed, must meet the same standards for space below the lowest floor as described in subsection 1(2) of this section. (3) Applicants floodproofing nonresidential buildings shall be notified that flood insurance premiums will be based on rates that are one foot below the flood - proofed level (e.g. a building constructed to one foot above the base flood level will be rated at the base flood level). 3. Critical Facility (1) Construction of new critical facilities shall be, to the extent possible, located outside the limits of the base flood plain. Construction of new critical facilities shall be permissible within the base flood plain if no feasible alternative site is available. Critical facilities constructed within the base flood plain shall have the lowest floor elevated to three fee or more above the level of the base flood elevation at the site.. Floodproofing and sealing measures must be taken to ensure that toxic substances will not be dis- placed by or released into flood waters. Access routes elevated to or above the level of the base flood plain shall be provided to all critical facilities to the extent possible. 4. Manufactured Homes. (1) Manufactured homes to be placed or substan- tially improved within Zones A1-30, AH, and AE on the community's FIRM shall be elevated on a permanent founda- tion such that the lowest floor of the manufactured home is one foot or more above the Base Flood Elevation; and be securely anchored to an adequately anchored foundation system in accordance wit the provisions of Section 4.58.140 1. This paragraph applies to manufactured homes to be placed or substantially improved in an expansion to an existing manufactured home park or subdivision. This paragraph does not apply to manufactured homes to be placed or substantially improved in an existing manu- factured home park or subdivision except where the re- pair, reconstruction, or improvement of the streets, utilities, and pads equals or exceeds 50 percent of the value of the streets, utilities, and pads before the repair, reconstruction or improvement has commenced." Section 6. Section 11.58.160 of the City of Yakima Municipal Code is hereby amended to read as follows: "11.58.160 Floodways. Located within areas of special flood hazard established in Section 11.58.050 of this Chapter are areas designated as floodways. Since the floodway is an extremely hazardous area due to the veloc- - 8 Cord/flood) ity of flood waters which carry debris, potential projec- tiles, and erosions potential, the following provisions apply: le (1)Encroachments, including fill, new construc- tion, substantial improvements, and other developments are prohibited unless certification by a registered professional engineer or architect demonstrates to the Code Administration Manager that such encroachments shall not result in any increase in flood levels during the occurrence of the base flood discharge. (2)Construction or reconstruction of residential structures is prohibited within designated floodways, except for (i) repairs, reconstruction, or improvements to a structure which do not increase the ground floor area; and (ii) repairs, reconstruction, or improvements to a structure, the cost of which does not exceed 50 percent of the market value of the structure either, (A), before the repair, reconstruction, or repair is started, or (B) if the structure has been damaged, and is being restored, before the damage occurred. Work done on structures to comply with existing health, sanitary, or safety codes or to structures identified as historic places shall not be included in the 50 percent determina- tion. (3)If Section 11.58.160(1) is satisfied, all new construction and substantial improvements shall comply with all applicable flood hazard reduction provisions of Sections 11.58.140, 11.58.150, and 11.58.160 of this Chapter." Section 7. Section 11.58.170 of the City of Yakima Municipal Code is hereby amended to read as follows: "11.58.170 Standards for shallow flooding areas (AO zones). Shallow flooding areas appear on FIRM's as AO zones with depth designations. The base flood depths in these zones range from one to three feet above ground where a clearly defined channel does not exist, or where the path of flooding is unpredictable and where velocity flow may be evident. Such flooding is usually character- ized as sheet flow. In these areas, the following pro- visions apply: 1. New construction and substantial improvements of residential structures within AO zones shall have the lowest floor (including basement) elevated above the highest adjacent grade of the building site one footor more above the depth number specified on the FIRM (at least two feet if no depth number is specified). 2. New construction and substantial improvements of nonresidential structures within AO zones shall ei- ther: a. Have the lowest floor (including basement) elevated above the highest adjacent grade of the building site, one foot or more above the depth number specified - 9 - (ord/flood) on the FIRM (at least two feet if no depth number is specified) ; or b. Together with attendant utility and sanitary facilities, be completely floodproofed to or above that level so that any space below that level is watertight with walls substantially impermeable to the passage of water and with structural components having the capabili- ty of resisting hydrostatic and hydrodynamic loads and effects of buoyancy. If this method is used, compliance shall be certified by a registered professional engineer or architect as in Section 11.58.150. 3. Required adequate drainage paths around structures on slopes to guide floodwaters around and away from proposed structures." Section 8: Section 11.58.180 of the City of Yakima Municipal Code is hereby enacted to read as follows: "11.58.180 Wetlands. Management. To the maximum extent possible, avoid the short and long term adverse impacts associated with the destruction or modification of wet- lands, especially those activities which limit or disrupt the ability of the wetland to alleviate flooding impacts. The following process should be implemented: 1. Review proposals for development within base flood plains for their possible impacts on wetlands located within the flood plain. 2. Ensure that development activities in or around wetlands do not negatively affect public safety, health, and welfare by disrupting the wetlands' ability to reduce flood and storm drainage." Section 9: This ordinance shall be in full force and effect thirty days after its passage, approval, and publica- tion as provided by law and by the City Charter. PASSED BY THE CITY COUNCIL, signed and approved this 1 �1 day of 1 ckrC�.t , 1925. Cold- Qh-d' ' Mayor ATTEST: K, ›ef CA11Ci City Clerk Publication Date: Effective Date: - 10 - (ord/f 1ood) FEBRUARY 19, 1991 Richard Andring, 203 S. 8th Avenue, thanked Mayor Berndt for her efforts in cleaning up the sidewalk on the corner of 8th Avenue. Referring to the staff memorandum on this issue, Mr. Andring suggested that more complete information be provided in reports to Council. 7. PUBLIC HEARING ON ANENITEN'I'S TO THE CITY'S FLOOD PLAIN ORDINANCE (SEE ORDINANCE) This being the date set for public hearing, Associate Planner Dan Valoff explained that the Planning Department is requesting Council adoption of proposed amendments to the current Flood Prevention Ordinance. The amendments include: - prohibiting new and substantially improved residential construction in designated floodways; - increased development requirements for critical facilities (schools, hospitals, emergency response facilities, etc. ); - requirement that structures located in flood plains be flood proof or elevated to one or more feet above the base flood elevation; - provision to provide protection of wetlands to insure their ability to alleviate flooding impact; and - provision to provide specific development standards for placement of manufactured hares in identified flood hazard areas. Mr. Valoff stated that these amendments were prepared by City legal staff in 1989. They were reviewed in a public meeting before the Regional Planning Commission in January, 1991, and no significant comments were received. Mr. Valoff then offered to answer questions for Council members. Council member Sims asked why a map was not included to identify the area in question. Mr. Valoff replied that the flood plains correspond with the Yakima River corridor, the Naches River corridor and parts of Ahtanum, Wide Hollow, Bachelor and Spring Creeks. A single map has not been developed to identify all of these locations. Mr. Valoff used a wall map to generally identify the flood plain area. Council member Pechtel stated that it is imperative for Council to have an accurate map before they make a decision. Mr. Valoff stated that a large map should be ready within the next month, and will include the entire urban area. It was MOVED BY PDCHTEL, SECONDED BY BUCHANAN, TO DEFER ACTION UNTIL A MAP IS AVAILABLE FOR COUNCIL USE. Before further action was taken, Mayor Berndt opened the public hearing, and asked if there was anyone present to speak to the issue. There being none, Mayor Berndt closed the public hearing. The question was called for a vote on the motions. The motion carried by unanimous voice vote. Beauchamp and Semon absent. 8. PUBLIC HEARING CN THE FRUITVALE ANNEXATION, PHASE 1 (SEE ORDINANCE ANNEXING PROPERTY) Associate Planner John Elsden explained that this is a public hearing to consider an amendment to the Fruitvale Annexation • CITY OF YAKIMA, WASHINGTON OFFICE OF ENVIRONMENTAL PLANNING YAKIMA MUNICPAL CODE ORDINANCE AMENDMENT JANUARY 15, 1991 STAFF REPORT REQUEST: The City of Yakima is proposing amendments to its current Flood Prevention Ordinance YMC 11.58 PURPOSE: The purpose of the amendments is to comply with new flood insurance program regulations The primary effect of the existing ordinance is a permit system and development standard for new development in flood hazard areas BACKGROUND: On January 20, 1975, the City of Yakima officially entered into the National Federal Flood Insurance Program Entry into the program immediately made federally subsidized flood insurance available to owners of property in flood hazard areas within the City of Yakima Failure of the city to adopt an acceptable ordinance would result in suspension from the program and the Toss of federally subsidized flood insurance Additional effects include, 1 ) No federal grants or loans for improvements in flood hazard areas, 2) No federal disaster assistance, 3) No federal mortgage insurance in identified flood hazard areas This includes FHA, VA,and Farmers Home, and 4) No FNMA or GNMA purchase of mortgages in the secondary mortgage market A detailed Flood Insurance Study was completed by the Federal Emergency Management Agency (FEMA) in 1980 and was accepted by the City Planning Commission and the City Council In order for the City to participate in the flood insurance program it was required to adopt a regulatory ordinance to establish development standards in flood hazard areas On November 3, 1981 the City adopted a Flood Damage Prevention Ordinance The ordinance was amended in 1987 reflecting changes in the flood insurance program 1 • O SUMMARY OF AMENDMENTS: The 1987 State Legislature amended RCW Chapter 86 16 which gave the Department of Ecology statewide authority for flood plain management. In May 1988, the Department of Ecology adopted rules to administer this new taw (WAC 173-158) and establish some additional State requirements for flood plain management A summary of the additional State requirements are listed as follows 1 Velocity Zones Prohibited development in Coastal High Hazard Areas (Not applicable in this area) 2 11 56 160 (2) Floodways In areas designated as floodways, new or substantially improved residential structures are prohibited 3 11 58 030 & 150 3 (1) Critical Facilities Facilities such as schools, hospitals, emergency response installations, and facilities which use or store hazardous materials shall be protected to 3 or more feet above the base flood elevation, if necessary to be located in the base flood plain 4 11 58 150 (1) Flood Protection Elevation Structures shall be elevated or floodproofed to one or more feet above the base flood elevation 5 11.58 180 Wetland Management. To the maximum extent possible, avoid the short and long term adverse impacts associated with the destruction or modification of wetlands, especially those activities which limit or disrupt the ability of the wetland to alleviate flooding impacts The above referenced requirements along with 11 58 150 4 (1) development standards for the placement of manufactured homes in identified flood hazard areas are reflected in the proposed amendments to the Citys Flood Damage Prevention Ordinance A copy of the current ordinance. along with the proposed amendments, which are underlined, are attached for your review PROJECT ANALYSIS: The National Flood Insurance Program requirements are considered minimum standards and, according to FEMA regulations, community or State flood plain management regulations which are more restrictive shall take precedence The 1989 legislature made additional changes in the rules governing flood plain management (WAC 173-158) by 1 ) removing State authority to establish state wide flood management rules which exceed federal requirements under the National Flood Insurance Program, 2) establishing a procedure for rules for specific areas which exceed NFIP minimum requirements, 3) allowing the State to provide technical assistance to local governments in determining the location of the 100 -year flood plain, and 4) communicating to local governments that they may establish requirements which exceed the State and Federal minimums (SB 1651) The proposed amendments do exceed State and Federal requirements for flood plain management, however they are in keeping with the purpose of the City's Flood Damage Prevention Ordinance which is to provide minimum standards to promote the public health, safety, and general welfare, and to minimize losses due to flood conditions in specific areas Recent flooding in the area should reenforce the importance of good flood damage regulations ENVIRONMENTAL REVIEW: Pursuant to the provisions of Yakima City Code 6 88, the City of Yakima on December 19, 1.990 issued a Determination of Nonsignificance for the proposal to amend the City of Yakima's Flood Hazard Ordinance A fifteen day comment period for the DNS ended on January 3, 1991 with no significant comments received REVIEW AGENCY COMMENTS: Of the agencies that had an opportunity to review this proposal, no significant comments were received 3 • i FINDINGS: 1. The proposed amendments are in keeping with the intent and purpose of the City's current Flood Prevention Ordinance 2 The proposed amendments will allow the City of Yakima continued compliance in good standing with the Federal Flood Insurance Program 3 The proposed amendments, with only minor variations, are based upon a model ordinance prepared by FEMA which satisfies all program •requirements 4 In regards to the State Environmental Policy Act, a determination of non -sign' Cance has been entered into the record RECOMENDATION: Staff recommends approval of the proposed amendments based upon the aforementioned findings of fact. 1 1 FLOOD DAMAGE PREVENTION 1156.140 time for completion be shorter than that stated in the original notice requiring such installation. The appellant shall comply with the requirements of the notice of the city manager's decision. The failure of an appellant to so comply shall constitute a violation of this chapter subject, however, to the provisions of subsection (B) of this section. (B) Within ten days after the receipt of a written notice of the city manager's decision, the appellant may further appeal to the Yakima city council by filing with the Yakima city clerk a written notice of appeal stating the grounds on which such appeal is made. The city clerk shall submit such notice of appeal to the city council at its next regular meeting following the filing of such notice and the city council shall, by motion, set a date for a hearing by the city council on the matter. The city clerk shall give notice of the time of such hearing to the appellant, to the city manager and to the chief of police or his designated officer, which notice shall be given not less than five days prior to the date set for such hearing. At such hearing before the city council the appellant shall show cause on the grounds stated i his notice of appeal why the decision of the city manager should not be anirmed. If the city council affirms or modifies the decision of the city manager, the appellant shall be given written notice thereof by the chief of police or his designated officer, which notice shall describe the installation to be made and state a reasonable period of time within which such installation shall be completed. In no event shall the period of time for completion be shorter than that stated in the original notice to the appellant requiring such installation. The decision of the city council shall be final and the appellant shall comply with the notice thereof The failure by appellant to comply with the notice of the city council's decision shall constitute a violation of this chapter. (Ord. 1388 § 1 (part), 1972). Chapter 11.58 FLOOD DAMAGE PREVENTION Sections: 11.58.010 Statement of purpose. 11.58.020 Methods of reducing flood losses. 11.58.030 Definitions. 11.58.040 Lands to which this chapter applies. 11.58.050 Adopuon of Flood Insurance Study—Establishing areas of special flood hazard. 11.58.060 Compliance. 11.58.070 Abrogation and greater restrictions. 11.5 8.080 Interpretation. 11.58.090 Warning and disclaimer of liability. 11.58.100 Development permit required. 11.58.110 Designation of the director of community and economic development. 677 (Yakima 149) • 11.58.010-1138.020 BUILDINGS 11.58.120 Duties and responsibilities of the director of community and economic development. 11.58.130 Variance procedure. 11.58.140 General standards. 11.58.150 Specific standards. 11.58.160 Floodways. 11.58.170 Standards for shallow flooding areas (AO zones). 11.58.010 Statement of purpose. A. It is the purpose of this chapter to provide minimum standards to promote the public health, safety, and general welfare, and to minimize losses due to flood conditions in specific areas by provisions designed: (1) To protect human life and health; (2) To minimize expenditure of public money and costly flood control projects; (3) To minimize the need for rescue and relief elf rts associated with flooding and generally undertaken at the expense of the general ; iblic; (4) To minimize prolonged business interruptions; (5) To minimize damage to public facilities and utilities such as water and gas mains, electric, telephone and sewer lines, streets and bridges located in areas of special flood hazard, (6) To help maintain a stable tax base by providing for the sound use and development of areas of special flood hazard so as to minimize future flood blight areas; (7) To ensure that potential buyers are notified that property is in an area of special flood hazard, and, (8) To ensure that those who occupy the areas of special flood hazard assume responsibilities for their actions. (B) The city's enactment or enforcement of this chapter shall not be construed for the benefit of any individual person or group of persons other than the general public. In the event of a conflict between the intent of this subsection and any other provision of this chapter, this subsection shall govern insofar as applicable. (Ord. 2560 § 1 (part), 1981) 11.58.020 Methods of reducing flood losses. In order to accomplish its purposes, this chapter includes methods and provisions for (1) Restricting or prohibiting uses which are dangerous to health, safety, and property due to water or erosion hazards, or which result in damaging increases in erosion or in flood heights or velocities; (2) Requiring that uses vulnerable to floods, including facilities which serve such uses, be protected against flood damage at the time of initial construction; (3) Controlling the alteration of natural floodplain, stream channels, and natural protective barriers, which help accommodate or channel flood- waters; (Yakima 149) 678 • 1 FLOOD DAMAGE PREVENTION 1138.030 (4) Controlling filling, grading, dredging, and other development which may increase flood damage; and (5) Preventing or regulating the construction of flood barriers which will unnaturally divert floodwaters or which may increase flood hazards in other areas. (Ord. 2560 § 1 (part), 1981). 1138.030 Definitions. Unless specifically defined below, words or phrases in this chapter shall be interpreted so as to give them the meaning they have in common usage and to give this chapter its most reasonable applica- tion. The following words, phrases and terms as used in this chapter shall have the following meaning ascribed to them, unless a different meaning clearly appears from the context "Appeal" means a request for a review of the interpretation by the director of community and economic development of any provision of this chapter or a request for a variance. "Area of shallow flooding" means a designated AO or AH zone on the Flood Insurance Rate Map (FIRM). The b le flood depths range from one to three feet; a clearly defined channel does not exis' the path of flooding is unpredictable and indeterminate; and, velocity flow may be evident. AO is characterized as sheet flow and AH indicates ponding, "Area of special flood hazard" means the land in the floodplain within a community subject to a one percent or greater chance of flooding in any given year. Designation on maps always includes the letters A or V. "Base flood" means the flood having a one percent chance of being equalled or exceeded in any given year. Also referred to as the "100 -year flood." Designation on maps always includes the letters A or V. "Development" means any manmade change to improved or unim- proved real estate, including but not limited to buildings or other structures, mining, dredging, filling, grading, paving, excavation or drilling operations located within the area of special flood hazard. condition of "Flood" or "flooding" means a general and temporary partial or complete inundation of normally dry land areas from. 1. The overflow of inland or tidal waters; and/or 2. The unusual and rapid accumulation of runoff of surface waters from any source. "Flood Insurance Rate Map" (FIRM) means the official map on which the Federal Insurance Administration has delineated both thehthe reas of special flood hazards and the risk premium zones applicable "Flood Insurance Study" means the official report provided by the Federal Insurance Administration that includes flood profiles, the Flood Boundary-Floodway Map, and the water surface elevation of the base flood. "Floodway" means the channel of a river or other watercourse and the adjacent land areas that must be reserved in order to discharge the base flood without cumulatively increasing the water surface elevation more than one foot. "Lowest floor" means the lowest floor of the lowest enclosed area 679 (Yakima 149) • 11.58.030 BUILDINGS (including basement). An unfinished or flood resistant enclosure, usable solely for parking of vehicles, building access or storage, in an area other than a basement area, is not considered a building's lowest floor, provided, that such enclosure is nit built so as to render the structure in violation of the applicable nonelevation design requirements of this chapter found at Section 11.58.150 2. "Habitable floor" means any floor usable for living purposes,which includes working, sleeping, eating, cooling or recreation, or a combination thereof. A floor used only for storage purposes is not a "habitable floor." "Manufactured home" means a structure, transportable krone or more sections, which is built on a permanent chassis and is designed for use with or without a permanent foundation when connected to the required utilities. For floodplain management purposes the tears "manufactured home" also includes park trailers, travel trailers, and other similar vehicles placed on a site for greater than one hundred eighty consecutive days. For insurance purposes the term "manufactured home" does not include park trailers, travel trailers, and other similar vehicles. "Manufactured home park or subdivision" means a parcel (or con- tig►.. us parcels) ofland divided into two or more manufactured home lots for rent or sale. "New construction" means structures for which the "start of construc- tion" commenced on or after the effective date of the ordinance codified in this chapter. "Shall" means: 1 With respect to the functions and powers of the director of commu- nity and economic development, any agents and employees of the city of Yakima authorized hereunder, direction and authorization to act in the exercise of sound discretion and good faith. 2. With respect to the obligation upon owners and occupants of prem- ises and their agents, a mandatory requirement to act in compliance with this chapter at the risk of civil and criminal liability upon failure so to act. "Start of construction" includes substantial improvement, and means the date the building permit was issued, provided the actual start of construc- tion, repair, reconstruction, placement or other improvement was within one hundred eighty days of the permit date. The actual start means either the first placement of permanent construction of a structure on a site, such as the pouring of slab or footings, the installation of piles, the construction of columns, or any work beyond the stage of excavation; or the placement of a manufactured home on a foundation. Permanent construction does not include land preparation, sucb as clearing, grading and filling; nor does it include the installation of streets and/or walkways; nor does it include excava- tion for a basement, footings, piers, or foundation or the erection of tempo- rary forms; nor does it include the installation on the property of accessory buildings, such as garages or sheds not occupied as dwelling units or not part of the main structure. "Structure" means a walled and roofed building or manufactured'home, (Yakima 1.49) 8 680 1 1 FLOOD DAMAGE PREVENTION 11.58.040-11.58.070 including a gas or liquid storage tank that is principally above ground. "Substantial improvement" means any repair, reconstruction, or improvement of a structure, the cost of which equals or exceeds fifty percent of the market value of the structure either 1. Before the improvement or repair is started; or 2. If the structure has been damaged and is being restored, before the damage occurred. For the purposes of this definition, "substantial improve- ment" is considered to occur when the first alteration of any wall, ceiling, floor, or other structural part of the building commences, whether or not the alteration affects the external dimensions of the structure. The term does not, however, include either. 1. Any project for improvement of a structure to comply with existing state or local health, sanitary, or safety code specifications which are solely necessary to assure safe living conditions; or 2. Any alteration of a structure listed on the National Register of Historic Places or a State Inventory of Historic Places. "Variance" means a grant of relief from the requirements of this chapter wl ch permits construction in a manner that would otherwise be prohibited by this chapter. (Ord. 3052 § 1,1987.Ord. 2560 § 1 (part), 1981). 1138.040 Lands to which this chapter applies. This chapter shall apply to all areas of special flood hazards within the jurisdiction of the city of Yakima (Ord. 2560 § 1(part), 1981). 1138.050 Adoption of Flood Insurance Study — Establishing areas of special flood hazard. A. "The Flood Insurance Study for the City of Yakima," dated June 15, 1981, (three copies of which are filed with the office of the Yakima city clerk) are adopted as an official study and official maps of the city of Yakima; and as by this reference declared to be a part of this chapter and incorporated in this subsection. B. The areas of special flood hazard identified by the official study and maps adopted by subsection A of this section are designated and established as special flood hazard areas for the purpose of interpreting and administering this chapter. (Ord. 3052 § 2, 1987; Ord. 2560 § 1 (part), 1981). 1138.060 Compliance. No structure or land hereafter shall be con- structed, located, extended, converted, or altered without full compliance with the terms of this chapter and other applicable laws, rules and regulations. (Ord. 2560 § 1 (part), 1981). 1138.070 Abrogation and greater restrictions. This chapter is not intended to repeal, abrogate, or impair any existing easements, covenants, or deed restrictions. However, where this chapter and another ordinance ease- ment, covenant, or deed restriction conflict or overlap, whichever imposes the more stringent restrictions shall prevail. (Ord. 2560 § 1 (part), 1981). 681 (Yakima 149) • • • • 1138.080-1138.110 BUILDINGS 1138.080 Interpretation. In the interpretation and application of this chapter, all provisions shall be: (1) Considered as minimum requirements; (2) Liberally construed in favor of the governing body; and, (3) Deemed neither to limit nor repeal any other powers granted under state statutes. (Ord. 2560 § 1 (part), 1981). 1138.090 Warning and disclaimer of liability. The degree of flood protec- tion roteation required by this chapter is considered reasonable for regulatory purposes and is based on scientific and engineering considerations Larger floods can and will occur on rare occasions, Flood heights may be increased by man- made or natural causes. This chapter does not imply that land outside the areas of special flood hazards or ues permitted within such areas will be free from flooding or flood damages. This chapter shall not create liability on the part of the city of Yakima, any officer or employee thereof, or the Federal Insurance Administration, for any flood damages that result from reliance on this chapter or any administrative decision lawfully made thereunder (Ord. 2560 § 1 (part), 1981). 1138100 Development permit required. A development permit shall be obtained before construction or development begins within any area of special flood hazard established in Section 11.58.050. The permit shall be for all structures including manufactured homes, as set forth in the "definitions" (Section 11.58.030 of this chapter), and for all other development including fill and other activities, also as set forth in the "definitions." Application for a development permit shall be made on forms furnished by the director of community and economic development and may include, but not be limited to, plans in duplicate drawn to scale showing the nature, location, dimen- sions, and elevations of the area in question, existing or proposed structures, fill, storage of materials, drainage facilities; and the location of the foregoing. Specifically, the following information is required. 1. Elevation in relation to mean sea level, of the lowest floor (including basement) of all structures; 2. Elevation in relation to mean sea level to which any structure has been floodproofed; 3 Certification by a registered professional engineer or architect that the floodproofing methods for any nonresidential structure meet the floodproofing criteria in Section 11.58.150 2; 4 Description of the extent to which any watercourse will be altered or relocated as a result of proposed development. (Ord. 3052. § 3, 1987: Ord. 2560 § 1 (part), 1981). 1138.110 Designation of the director of community and economic devel- opment. The director of community and economic development is appointed (Yakima 149) 682 1 FLOOD DAMAGE PREVENTION 1138.120 to administer and implement this chapter by granting or denying develop- ment permit applications in accordance with its provisions. (Ord. 2560 § 1 (part), 1981). 1158120 Duties and responsibilities of the director of community and economic development. Duties of the director of community and economic development shall include, but not be limited to: 1. Permit Review. (1) Review all development permits to determine that the permit requirements of this chapter have been satisfied. (2) Review all development permits to determine that all necessary permits have been obtained from those federal, state or local governmental agencies from which prior approval is required. (3) Review all development permits to determine if the proposed devel- opment is located in the floodway. If located in the floodway, assure that the encroachment provisions of Section 11.58.160(AX1) are met. 2. Use of Other Base Flood Data. When base flood elevation d. to has not been provided in accordance with Section 11.58.050, the director of community and economic development shall obtain, review, and reasonably utihze any base flood elevation and floodway data available from a federal, state or other source, in order to administer Sections 11.58 150 and 11.58.160(AX2). 3. Information to be Obtained and Maintained. (1) Where base flood elevation data is provided through the Flood Insurance Study or as required in subsection (2) of this section, obtain and record the actual elevation (in relation to mean sea level) of the lowest habitable floor (including basement) of all new or substantially improved structures, and whether or not the structure contains a basernent. (2) For all new substantially improved floodproofed structures: (a) Verify and record the actual elevation (in relation to mean sea level); and (b) Maintain the floodproofing certifications required in Section 11.58 100(3). (3) Maintain for public inspection all records pertaining to the provi- sions of this chapter. 4 Alteration of Watercourses. (1) Notify adjacent communities and the Washington State Department of Ecology prior to any alteration or relocation of a watercourse, and submit evidence of such notification to the Federal Insurance Administration. (2) Require that maintenance is provided within the altered or relocated portion of said watercourse so that the flood -carrying capacity is not dimin- ished. 5. Interpretation of FIRM Boundaries. Make interpretations where needed, as to exact location of the boundaries of the areas of special flood hazards (for example, where there appears to be a conflict between a mapped boundary and actual field conditions). The person contesting the location of 683 (vakias t49) 1 • 1138130 BUILDINGS the boundary shall be given a reasonable opportunity to appeal the interpreta- tion as provided in Section 11.58.130 (Ord. 3052 § 4, 1987 Ord. 2560 § 1 (part), 1981). 11.58.130 Variance procedure. For the purpose of this section, bearing examiner shall have the same meaning as in Section 15.02.020 of the City of Yakima Municipal Code. A. Appeal. (1) The hearing examiner of the city shall hear and decide appeals and requests for variances from the requirements of this chapter: (2) The bearing examiner shall hear and decide appeals when it is alleged there is an error in any requirement, decision, or determination made by the director of community and economic development in the enforcement or administration of this chapter. (3) Those aggrieved by the decision of the hearing examiner or any taxpayer, may appeal such decision to the Superior Court of the State of Washington. (4) In passing upon such applications, the hearing examiner shall con- sider all technical evaluations, all relevant factors, standards specified in other sections of this chapter, and: (a) The danger that materials may be swept onto other lands to the injury of others; (b) The danger to life and property due to flooding or erosion damage; (c) The susceptibility of the proposed facility and its contents to flood damage and the effect of such damage on the individual owner, (d) The importance of the services provided by the proposed facility to the community. (e) The necessity to the facility of a waterfront location, where applica- ble, (f) The availability of alternative locations, for the proposed use which are not subject to flooding or erosion damage; (g) The compatibility of the proposed use with existing and anticipated development; (h) The relationship of the proposed use to the comprehensive plan and floodplain management program for that area, (i) The safety of access to the property in times of flood for ordinary and emergency vehicles; (j) The expected heights, velocity, duration, rate of rise, and sediment transport of the flood waters and the effects of wave action, if applicable, expected at the site; and (k) The costs of providing governmental services during and after flood conditions, including maintenance and repair of public utilities and facilities such as sewer, gas, electrical, and water systems, and streets and bridges. (5) Generally, variances may be used for new construction and substan- tial improvements to be erected on a lot of one-half acre or less in size contiguous to and surrounded by lots with existing structures constructed (Yakima 149) 684 1 FLOOD DAMAGE PREVENTION 11.58140 below the base flood level, providing subsection (AX4Xa) — (k) of this section has been fully considered. As the lot size increases beyond the one-half acre, the technical justification required for issuing the variances increases. (6) Upon consideration of the factors of subsection (AX4) of this section and the purpose of this chapter, the hearing examiner may attach such conditions to the granting of variances as it deems necessary to further the purposes of this chapter. The director of community and economic develop- ment shall maintain the records of all appeal actions and report any variances to the Federal Insurance Administration upon request. B. Conditions for Variances. (1) Variances may be used for the reconstruction, rehabilitation or restoration of structures listed on the National Register of Historic Places or the State Inventory of Historic Places, without regard to the procedures set forth in the remainder of this section. (2) Variances shall not be issued within any designated floodway if any increase in flood levels during the base flood discharge would res it. (3) Variances shall only be issued upon a determination th..t the va-- ance is the minimum necessary, considering the flood hazard, to afford re1i . (4) Variances shall only be issued upon. (a) A showing of good and sufficient cause; (b) A determination that failure to grant the variance would result in exceptional hardship to the applicant; and (c) A determination that the granting of a variance will not result in increased flood height, additional threats to public safety, extraordinary public expense, create nuisances, cause fraud on or victimization of the public as identified in subsection (AX4) of this section or conflict with existing local laws or ordinances. (5) Variances as interpreted in the National Flood Insurance Program are based on the general zoning law principle that they pertain to a physical piece of property; they are not personal in nature and do not pertain to the structure, its inhabitants, economic or financial circumstances. They pri- marily address small lots in densely populated residential neighborhoods. As such, variances from the flood elevations should be quite rare. (6) Variances may be used for nonresidential buildings in very limited circumstances to allow a lesser degree of floodproofing than watertight or dry- floodproofing, where it can be determined that such action will have low damage potential, complies with all other variance criteria except subsection (BX5) of this section, and otherwise complies with Section 11.58.140 (7) Any applicant to whom a variance is granted shall be given written notice that the structure will be permitted to be built with a lowest floor elevation below the base flood elevation and that the cost of flood insurance will be commensurate with the increased risk resulting from the reduced lowest floor elevation. (Ord. 3052 § 5, 1987: Ord. 2560 § 1 (part), 1981). 11.58.140 General standards. In all areas of special flood hazards the following standards are required. 685 (Yakima 149) • 11.58.140 BUILDINGS 1. Anchoring. Notwithstanding provisions of Section 11.06.100 of this code: (1) All new construction and substantial improvements shall be anchored to prevent flotation, collapse or lateral movement of the structure. (2) All manufactured homes shall be anchored to resist flotation, col- lapse or lateral movement by providing over -the -top and frame ties to ground anchors. Specific requirements shall be that (a) Over -the -top ties be provided at each of the four corners of the manufactured home, with two additional ties per side at intermediate loca- tions, with mobile homes less than fifty feet long requiring one additional tie per side; (b) Frame ties be provided at each corner of the home with five addi- tional ties per side at intermediate points, with manufactured homes less than fifty feet long requiring four additional ties per side; (c) All components of the anchoring system be capable of carrying a force of four thousand eight hundred pounds; and (d) Any additions to the manufactured home a similarly anchored. (3) An alternative method of anchoring may involve a 'stem designed to withstand a wind force of ninety miles per hour or greater. Certification must be provided to the director of community and economic development that this standard has been met. 2. Construction Materials and Methods. (1) All new construction and substantial improvements shall be con- structed with materials and utility equipment resistant to flood damage. (2) All new construciion and substantial improvements shall be con- structed using methods and practices that minimize flood damage. (3) Electrical, beating, ventilation, plumbing, and air-conditioning equipment and other service facilities shall be designed and/or otherwise elevated or located so as to prevent water from entering or accumulating within the components during conditions of flooding. 3 Utilities. (1) All new and replacement water supply systems shall be designed to minimize or eliminate infiltration of flood waters into the system, (2) New and replacement sanitary sewage systems shall be designed to minimize or eliminate infiltration of flood waters into the systems and discharge from the systems into flood waters; and (3) On-site waste disposal systems shall be located to avoid impairment to them or contamination from them during flooding. 4 Subdivision Proposals. (1) All subdivision proposals shall be consistent with the need to mini- mize flood damage; (2) All subdivision proposals shall have public utilities and facilities such as sewer, gas, electrical, and water systems located and constructed to minimize flood damage; (3) All subdivision proposals shall have adequate drainage provided to reduce exposure to flood damage; and (Yakima 149) 686 • 1 1 1 FLOOD DAMAGE PREVENTION 1158.150 (4) Where base flood elevation data has been provided or is not avail- able from another authoritative source, it shall be generated for subdivision proposals and other proposed development which contain at least fifty lots or five acres (whichever is less). 5. Review of Building Permits. Where elevation data is not available, either through the Flood Insurance Study or from another authoritative source (Section 11.58 120 2), applications for building permits shall be reviewed to assure that proposed construction will be reasonably safe from flooding. The test of reasonableness is a local judgment and includes use of historical data, high water marks, photographs of past flooding, etc., where available. Failure to elevate at least two feet above grade in these zones may result in higher insurance rates. (Ord. 3052 § 6, 1987: Ord. 2560 § 1 (part), 1981). 1158150 Specific standards. In all areas of.special flood hazards where base flood elevation data has been provided as set forth in Section 11.58.050 or Section 11.58.120, the following pro, .sions arr required: 1. Residential Construction. (1) New construction and substantial improvement of any residential structure shall have the lowest floor, including basement, elevated to or above base flood elevation. (2) Fully enclosed areas below the lowest floor that are subject to flood- ing are prohibited, or shall be designed to automatically equalize hydrostatic flood forces on exterior walls by allowing for the entry and exit of floodwaters. Designs for meeting this requirement must either be certified by a registered professional engineer or architect or must meet or exceed the following minimum criteria. (a) A minimum of two openings having a total net area of not less than one square inch for every square foot of enclosed area subject to flooding shall be provided. (b) The bottom of all openings shall be no higher than one foot above grade. (c) Openings may be equipped with screens, louvers, or other coverings or devices; provided, that they permit the automatic entry and exit of flood- waters. 2. Nonresidential Construction. (1) New construction and substantial improvement of any commercial, industrial or other nonresidential structure shall either have the lowest floor, including basement, elevated to the level of the base flood elevation; or, together with attendant utility and sanitary facilities, shall. (a) Be floodproofed so that below the base flood level the structure is watertight with walls substantially impermeable to the passage of water, (b) Have structural components capable of resisting hydrostatic and hydrodynamic loads and effects of buoyancy, and (c) Be certified by a registered professional engineer or architect that the 687 (Yakima 149) • • • 11.58.160 BUILDINGS design and methods of construction are in accordance with accepted stan- dards of practice for meeting provisions of this subsection based on their development and/or review of the structural design, specifications and plans. Such certifications shall be provided to the official as set forth in Section 11.58.120 3(2). (2) Nonresidential structures that are elevated, not floodproofed, must meet the same standards for space below the lowest floor as described in subsection 1(2) of this section. (3) Applicants floodproofing nonresidential buildings shall be notified that flood insurance premiums will be based on rates that are one foot below the floodproofed level (e.g. a building constructed to the base flood level will be rated as one foot below that level). 3. Manufactured Homes. (1) Manufactured homes shall be anchored in accordance with Section 11.58.1401 (2) For new manufctured home parks and manufactured home sub- divisions; for expansion? to existing manufactured home parks and manu- factured home subdivisions; ;or :xisting manufactured home parks and manufactured home subdivisions where the repair, reconstruction or improvement of the streets, utilities and pads equals or exceeds fifty percent of the value of the streets, utilities and pads before the repair, reconstruction or improvement has commenced, and for manufactured homes not placed in a manufactured home park or manufactured home subdivision, require that (a) Standards or lots are elevated on compacted fill or on pilings so that the lowest floor of the manufactured home will be at or above the base flood level, (b) Adequate surface drainage and access for a hauler are provided, and, (c) In the instance of elevation .on pilings, that: — lots are large enough to permit steps, — piling foundations are placed in stable soil no more than ten feet apart, and — reinforcement is provided for pilings more than six feet above the ground level. (3) No manufactured home shall be placed in a floodway, except in an existing manufactured home park or existing manufactured home subdivi- sion. (Ord. 3052 § 7, 1987 Ord. 2560 § 1 (part), 1981). 1138.160 Floodways. A. Located within areas of special flood hazard established in Section 11.58.050 are areas designated as floodways. Since the floodway is an extremely hazardous area due to the velocity of floodwaters which carry debris, potential projectiles, and erosions potential, the following provisions apply - 1. Encroachments, including fill, new construction, substantial improvements and other developments are prohibited unless certification by a registered professional engineer or architect demonstrates to the code administration manager that such encroachments shall not result in any (Yakima 1.19) 688 1 1 FLOOD DAMAGE PREVENTION 1138.170 increase in flood levels during the occurrence of the base flood discharge. 2. If subsection (Axl) of this section is satisfied, all new construction and substantial improvements shall comply with all applicable flood hazard reduction provisions of Sections 11.58.140, 11.58.150 and 11.58 160 3. Any manufactured home, except in an existing manufactured home park or existing manufactured home subdivision is prohibited in an area of special flood hazard. B. Construction or reconstruction of residential structures is prohibited within designated floodways, except for repairs, reconstruction, or improve- ments to a structure which do not increase the ground floor area; and repairs, reconstruction or improvements to a structure the cost of which does not exceed fifty percent of the market value of the structure either, before the repair, reconstruction, or repair is started, or if the structure has been damaged, and is being restored, before the damage occurred. Work done on structures to comply with existing health, sanitary, or safety codes or to structure. identified as historic places shall not be included in the fifty percent determin..ion. (O'S. 3093 § 1, 1988. Ord. 3058 § 1, 1987 Ord. 2560 § 1 (part), 1981). 1158.170 Standards for shallow flooding areas (AO zones). Shallow flooding areas appear on FIRM's as AO zones with depth designations. The base flood depths in these zones range from one to three feet where a clearly defined channel does not exist, or where the path of flooding is unpredictable and where velocity flow may be evident. Such flooding is usually charac- terized as sheet flow. In these areas, the following provisions apply 1 New construction and substantial improvements of residential struc- tures within AO zones shall have the lowest floor (including basement) elevated above the highest adjacent grade of the building site, to or above the depth number specified on the FIRM (at least two feet if no depth number is specified). 2. New construction and substantial irnprovemenu of nonresidential structures within AO zones shall either a. Have the lowest floor (including basement) elevated above the high- est adjacent grade of the building site, to or above the depth number specified on the FIRM (at least two feet if no depth number is specified); or b. Together with attendant utility and sanitary facilities, be completely floodproofed to or above that level so that any space below that level is watertight with walls substantially impermeable to the passage of water and with structural components having the capability of resisting hydrostatic and hydrodynamic loads and effects of buoyancy. If this method is used, com- pliance shall be certified by a registered professional engineer or architect as in Section 11.58.150. 3. Required adequate drainage paths around structures on slopes to guide floodwaters around and away from proposed structures. (Ord. 3052 § 8, 1987). 689/729 (Yakima 1.9) O • } FLOOD INSURANC STUDY CITY OF YAKIMA, WASHINGTON YAKIMA COUNTY J I JUNE 15, 1981 El federal emergency management agency federal insurance administration COMMUNITY NUMBER - 530311 TABLE OF CONTENTS Page 1.0 INTRODUCTION 1 r-` 1.1 Purpose of Study 1 1.2 Coordination 1 1.3 Authority and Acknowledgments 1 2.0 AREA STUDIED 2 2.1 Scope of Study 2 2.2 Community Description 2 2.3 Principal Flood Problems 5 2.4 Flood Protection Measures 6 3.0 ENGINEERING METHODS 10 3.1 Hydrologic Analyses 10 3.2 Hydraulic Analyses 11 4.0 FLOOD PLAIN MANAGEMENT APPLICATIONS 12 4.1 Flood Boundaries 12 4.2 Floodways 13 5.0 INSURANCE APPLICATION 16 5.1 Reach Determinations 17 5.2 Flood Hazard Factors 17 5.3 Flood Insurance Zones 17 5.4 Flood Insurance Rate Map Description 19 6.0 OTHER STUDIES 19 7.0 LOCATION OF DATA 20 8.0 BIBLIOGRAPHY AND REFERENCES 20 i TABLE OF CONTENTS (Cont'd) Page FIGURES Figure 1 - Vicinity Map 3 Figure 2 - Flood of November 1906 7 Figure 3 - Flood of December 1933 8 Figure 4 - Flood of December 1933 9 Figure 5 - Floodway Schematic 16 TABLES Table 1 - Summary of Discharges 11 Table 2 - Floodway Data 14 Table 3 - Flood Insurance Zone Data 18 EXHIBITS Exhibit 1 - Flood Profiles Yakima River Wide Hollow Creek Bachelor Creek Spring Creek 1 Spring Creek 1 Tributary 1 Spring Creek 1 Tributary 2 Exhibit 2 - Flood Boundary and Floodway Map Index Flood Boundary and Floodway Map PUBLISHED SEPARATELY: Flood Insurance Rate, Map Index Flood Insurance Rate Map ii Panels O1P-02P Panels 03P -07P Panels 08P -09P Panels 10P -11P Panel 12P Panel 13P FLOOD INSURANCE STUDY 1.0 INTRODUCTION 1.1 Purpose of Study The purpose of this Flood Insurance Study is to investigate the existence and severity of flood hazards in the City of Yakima, Yakima County, Washington, and to aid in the administration of the National Flood Insurance Act of 1968 and the Flood Disaster Protec- tion Act of 1973. Initial use of this information will be to convert Yakima to the regular program of flood insurance by the Federal Insurance Administration. Further use of the information will be made by local and regional planners in their efforts to promote sound land use and flood plain development. 1.2 Coordination The identification of streams selected for detailed analysis was accomplished in a meeting held on April 12, 1976, and attended by representatives of the. City of Yakima, the study contractor, and the Federal Insurance Administration. During the course of the work, numerous informal contacts were made with the community for the purpose of obtaining data. Previous work by the U.S. Army Corps of Engineers on the Yakima River was reviewed and forms the basis of this study for the Yakima River. On January 26, 1978, the preliminary results of the work were reviewed at an intermediate coordination meeting attended by repre- sentatives of the City of Yakima, the study contractor, and the Federal Insurance Administration. The final community coordination meeting was held in Yakima on October 7, 1980, and attended by representatives of the Federal Insurance Administration, the study contractor, and the` community. Noproblems were raised at the meeting. 1.3 Authority and Acknowledgments The source of authority for this Flood Insurance Study is the National Flood Insurance Act of 1968, as amended. The hydrologic and hydraulic analyses for this study were performed by Tudor Engineering Company, for the Federal Insurance Administration, under Contract No. H-4021. This work, which was completed in June . 1978, covered all significant flooding sources affecting the City of Yakima. 2.0 AREA STUDIED 2.1 Scope of Study This Flood Insurance Study covers the incorporated area of the City of Yakima, Yakima County, Washington. The area of study is shown on the Vicinity Map (Figure 1). A small portion of Yakima County located within the corporate limits of•Yakima was not included in this study. Floods caused by the overflow of the Yakima River, Wide Hollow Creek, Bachelor Creek, Spring Creek 1, Spring Creek 1 Tributary 1, and Spring Creek 1 Tributary 2 were studied in detail. An overflow area of Bachelor and Ahtanum Creeks along the extreme southern corporate limits in the southern portion of the Yakima Municipal Airport runway was also studied by detailed methods. Those areas studied by detailed methods were chosen with considera- tion given to all proposed construction and forecasted development through 1983. 2.2 Community Description The City of Yakima is located in northeastern Yakima County, in south-central Washington. The Town of Selah lies approximately 3 miles north of Yakima at the junction of State Highways 12 and 97, while the City of Union Gap and the Town of Parker lie approximately 4 miles to the southeast and west of State Highways 97 and 12, respectively. Yakima is the social and commercial center of the Yakima Valley and the county seat of Yakima County. The city is located on the right (west) bank of the Yakima River, immediately south of the confluence with the Naches River. Establishment of the community dates from 1884, the year when the Northern Pacific Railroad selected the site for a.station. The railroad company filed a plat for the new town, offered lots to all who would move there, and moved them without charge. The first inhabitants included the residents of a small settlement which had been called Yakima (now known as Union Gap), located 4 miles south of the new town. Until 1917, the new town was named North Yakima and became a chartered city of the second class in 1886, at which time its population was approximately 1200. As the Yakima Valley was brought under cultivation around the turn of the century, growth of the city was rapid. By 1910, the population had reached 14,000, and growth has been steady in subsequent years. A population of 27,221 was recorded in 1940; 43,284 in 1960; and an estimated 46,750 in 1975. 2 -14#5 --", �T- 4�S'4 y , ��-,� � \ �1 �� a � . ' ko ,,d i 2000 if- k �,'' i Y o y `^ 1A j - ►� i w II _� J! j ,-r -42898 r} 7 �� Ho, n_:• >� o o oo y. q :.� `am; .. _ [` yiring 70 ! ' Range entral .•elf ,- \.4% ��y�dd y r` .�4J " '� ��wr ,:`tom/ 4142. 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'091 I li To 7� - ..::tT - ,r -r 0 ��' q'\.. ..- moi• •+ �• Liaii4pato - ' k'� �1_ 1 �1--. �.- `f ...CQyyont 1""J•J ff�iV\__.• tC .I I \ \� 0 i L- / D •��� tlC{ �^r---1 __• i l4 \ (,/ Fl s I/ . V ? SfatiO t'7 MEt3tCINE SA!(c'Yi�—'�'-S-_-.�.-�.? �-{t it ^" /' r 3 _a% ,. ' I `� N -`-t J FIGURE 11 FEDERAL EMERGENCY MANAGEMENT AGENCY Federal Insurance Administration CITY. OF YAKIMA, .WA [YAKIMA CO.) • APPROXIMATE SCALE 4 0 4 8 12 MILES 1—I I—I 1--] I VICINITY MAP Agriculture is'the,most important resource in Yakima 'County and is the foundation of the City of Yakima's economy. Irrigation systems established in..the early 1900s have created one of the world's greatest agricultural districts. The fruit grown in'the fertile Yakima Valley'has won world-wide recognition for its superior quality, flavor, and rich coloring. Yakima County, of the 3072 counties in the United States, ranks first in the number of all fruit trees and first in the production of apples, mint, and hops. Because of the tremendous tonnage of fruits and vegetables, one of the world's 'largest concentrations of commercial cold storage and processing plants is centered in Yakima (References 1 and 2). The city's residential and business districts are located on rising ground clear of the flood plain. Development within the flood plain has.occurred in the northeastern portion of the city and includes mobile home and recreational vehicle assembly plants, the Boise Cascade lumber mill, residences, motels and associated commercial enterprises, and a variety of public and community facilities. The latter include a power substation, senior citizen center, Masonic hall, and an office of the State Department of Motor Vehicles (Refer- ence 3) . • In the southern portion of the city, development in the area subject to flooding by the smaller creeks consists primarily of the Yakima Municipal Airport. - Yakima lies in the eastern foothills of the Cascade Range, whose peaks of Mount Rainier (14,410 feet) and Mount Adams (12,307 feet) are some 60 miles to the west. Throughout the foothill area, ridges. rising from 3000 to 4000 feet trend in a west to east direction, spaced apart at a distance of 5 to 15 miles. The Yakima River flows south from Ellensburg, and passes through the Yakima Ridge, Selah Gap, the Ahtanum Ridge, and Union Gap. Between the two gaps, the Yakima River is joined by the Naches River, which drains an area of approximately 1100 square miles, as compared with an area of 2240 square miles for the Yakima River above the confluence. The upper reaches of the Naches and Yakima Rivers pass through steep -walled canyons. In the vicinity of Yakima, as the terrain becomes flatter, the Yakima River gradient decreases until, down- stream of Union Gap, it averages 5 feet per mile as it flows south- east through the fertile area of the Yakima Valley. Much of the valley in the proximity of the main Yakima River channel shows the braided pattern of old river channels. These areas are generally gravelly and frequently covered by dense brush or woods. Extensive excavations for gravel have occurred, and some of the borrow pits have been developed into recreational lakes. The remainder of the valley is primarily devoted to irrigated crops and irrigated and subirrigated pasture. The summer climate of the Yakima River basin is hot and dry, typical of the continental type. Winters are moderately cold and cloudy, due primarily to the maritime influence of the prevailing westerly circulation from the Pacific Ocean. Approximately 75 percent of the annual precipitation occurs during the period from October through March. Annual precipitation varies from more than 100 inches in the Cascade Mountains to approximately 8 inches in the lower elevations in the vicinity of Yakima. Snowfall in excess of 400 inches falls on the higher slopes of the Cascade Mountains, with the lower eleva- tions receiving 20 to 25 inches. Winter temperatures normally range from near 20°F at night to near 40°F in the daytime, but temperatures of 0°F or below can be expected approximately every other year on the average in January or February. Normal summer temperatures reach 90°F during the daytime but cool rapidly to near 50°F at night. Temperatures exceeding 100°F are not uncommon, and a few readings over 100°F have been recorded (Reference 4). 2.3 Principal Flood Problems Flooding in the City of Yakima is a frequent occurrence. When the combined flow of the Naches and Yakima Rivers exceeds approximately 12,000 cubic feet per second (cfs), overflow occurs and inundates property in the flood plain of these rivers. In 65 years of gage records on the Yakima River, 43 occasions of overbank flows have been observed. The highest recorded flows are associated with heavy winter rainfall, sometimes augmented by rising temperatures which cause local snowmelt. Such conditions occurred in 1896, 1906, 1917, and 1933. Peak flows observed for the Yakima River were as follows: Date Peak Flow (cfs) Location . December 23, 1933 65,000 Parker November 15, 1906 63,900 Union Gap December '30, 1917 52,900 Parker November 16, 1896 45,600 Union Gap Subsequent to 1933, the highest winter floodflow occurred when 28,000 cfs were recorded at Parker on January -17, 1974. The winter floodflows at the Parker location are greater than the 100 -year discharge of 55,000 cfs at this gage. Spring floods, caused by snowmelt at higher elevations in the water- shed, also occur. The three most severe spring floods measured at the Parker gage had peak flows as follows: Date Peak Flow (cfs) May 29, 1948 June 19, 1916 June 3, 1913 5 37,700 24,800 22,600 Spring floods with flows in the range of 12,000 to 20,000 cfs have occurred some 20 times during 65 years of continuous record. These spring floods at Parker are less_than the 100 -year discharge at the gage. Photographs taken during the 1906 and 1933 floods are shown in Figures 2, 3, and 4. Flood damage, in the event of very high flows, occurs regionwide. In the most severe floods, highway and railroad communication has been interrupted due to the inundation of routes and washout of fills and bridges. Damage to property is widespread, particularly to low-lying cropland, whose productivity may be impaired by the deposit of waterborne debris. Loss of life has been experienced, particularly in the 1933 flood in the region, but there.has been no report of deaths resulting from flooding within the City of Yakima itself. 2.4 Flood Protection Measures Six U.S. Bureau of Reclamation irrigation reservoirs, listed below, are located in the headwaters of the Naches and Yakima Rivers. These reservoirs, with a combined active storage and a total drainage area of 1,070,000 acre-feet and 578 square miles, respectively, substan- tially reduce floodflows when floods are coincident with low reservoir levels. Storage is not formally reserved for flood control, however, and the flood -control operations are secondary to irrigation storage requirements. Reservoir Bumping Lake Cle Elum Lake Clear Lake Kachess Lake Keechelus Lake Rimrock Lake Date of Active Storage Stream Completion (Acre -Feet) Bumping River 1910 33,700 Cle Elum River 1933 436,900 North Fork Tieton River 19141 5,300 Kachess River 1905-19122 239,000 Yakima River 1906-1917 157,800 Tieton River 1925 198,000 1Crib Dam 1906-1911 (capacity 21,000 acre-feet). Present dam completed in 21912 Crib Dam 1906-1914. Present dam completed in.1917, but storage delayed until 1920. Approximately 7 miles of levee have been constructed on both banks of the Yakima River between the Naches River. mouth and the State Highway 24 (Yakima-Moxee) crossing. Except for a 1500 -foot portion of the left bank levee immediately upstream from the State Highway 24 crossing, 6 Figure 2. Flood of November 1906 (Looking Towards Moxee Valley Through the Washed -Out Naches River Bridge. City of Yakima Is in Right Background.) 7 Figure 3. Flood of December 1933 (Near the Mouth of the Naches River, on the Yakima Side. Water Is Swirling Around Near the Pens of a Ranch Near Railroad Bridge.) 8 Figure 4. Flood of December 1933 (View From Lookout Point Across the Naches and Yakima Rivers Towards Moxee. City of Yakima in Middle Distance. Note Flooded Orchards.) 9 the levee system provides protection against floodflows on the order of 75,000 cfs. On the lower Naches River, portions of the right bank have been leveed and riprapped to prevent erosion from high - velocity floodflows. The Yakima River is in State Flood -Control Zone No. 9, under Chapter 86.16 of the Revised Code of Washington. City and county governments are obligated to abide by the provisions of this statute and, under a 1973 amendment, may be authorized to administer it. Under the statute, proposers of developments within the flood plain must obtain a permit from the State Department of Ecology. Such permits stipulate a permissible floor elevation and are not issued if the proposed development is located within a floodway. 3.0 ENGINEERING METHODS For the: flooding sources studied in detail in the community, standard 'hydrologic and hydraulic study methods were used to determine the flood hazard- data required for this study. Flood events of a magnitude which 'are'expected to be equalled or exceeded once on the average during any 10-, 50-, 100= or 500 -year period (recurrence interval) have been, selected as having special significance for flood plain management and for flood insurance premium rates. These events, commonly termed the,. 10-, 50-, 100-, and 500 -year floods, have a 10, 2, 1, and 0.2 percent chance,. respectively, of being equalled or exceeded during any year. A:Lthough the recurrence interval represents the long term average period between floods of a specific magnitude, rare floods could occur at short intervals or even within the same year. The risk of experiencing a rare flood increases when periods. greater than 1 year are considered. For example, the risk of having a flood which equals or exceeds the 100 -year flood (1, percent chance of annual occurrence) in any 50 -year period is approximately 40 percent (4 in 10), and, for any 90 -year period, the risk increases to approximately 60 percent (6 in 10). The analyses reported here reflect flooding potentials based on conditions -existing -in the community at the time of completion of this study. Maps and flood elevations will be amended periodically to reflect future changes. 3.1 Hydrologic Analyses Hydrologic analyses were carried out to establish the peak discharge - frequency relationships for floods of the selected recurrence inter- vals for each stream studied in detail in the community. Floodflow-frequency data for the Yakima River were based on statisti- cal analysis of discharge records at a gaging station located near Parker and operated by the U.S. Geological Survey since 1908. Analyses were performed by the U.S. Army Corps of Engineers on the Yakima River (Reference 5) in accordance with the standard log - Pearson Type III methods, as outlined by the U.S. Water Resources Council (Reference 6). The resulting frequency curves were made available and were verified by independent analysis performed by the study contractor. 10 Floodflow-frequency data for the Wide Hollow Creek and Bachelor Creek basins were based on unpublished synthetic frequency curves developedby the U.S. Army Corps of Engineers and were also verified by the study contractor. Peak discharge -drainage area relationships for the Yakima River and Wide Hollow and_Bachelor Creeks are shown in. Table 1. Flooding Source and Location Yakima River Above Confluence With Naches River Near Parker Wide- Hollow Creek Near Harwood At Burlington Northern Railroad Bridge Bachelor Creek At Confluence With Ahtanum Creek 1Data Not Available Table 1. Summary of Discharges Peak -Discharges Drainage Area (Cubic Feet per Second) (Square Miles) 10 -Year 50 -Year 100 -Year 500 -Year 3.2 Hydraulic Analyses 2,112.0 - 15,900 26,700 35,300 58,900 3,633.0 26,000 43,500 :55,000 96,000 32.4. 100 220 320 750 65.7 220 450 640 1,450 1 '550 1,100 1,725 3,100 Analyses of the hydraulic characteristics of streams in the community were carried out to provide estimates of the elevations of floods of the selected recurrence intervals along each stream studied in the community. Water -surface elevations were determined by use of the U.S. Army Corps of Engineers HEC -2 step -backwater computer program (Reference 7). The U.S. Army Corps of Engineers, Seattle District, previously developed the physical data and determined the loss coefficients that were used to derive step -backwater computer models for the Yakima River (Reference 5). This information was verified using existing topographic maps at a scale of 1:12,000, with a contour interval of 5 feet (Reference 8). Physical data for Wide Hollow and Bachelor Creeks and Spring Creek 1, were developed by the study contractor based on topographic mapping at a scale of 1:4800, with a contour interval of 4 feet (Reference 9). 11 Locations. of selected cross sections used in the hydraulic analyses are shown on the Flood Profiles (Exhibit 1). For stream segments for which a floodway is computed (Section 4.2), selected cross section locations are also shown on the Flood Boundary and Floodway Map (Exhibit 2). Elevations for Spring Creek 1 and Spring Creek 1 Tributaries l and 2 were based on the flood plain analysis of Bachelor Creek. Flood profiles for the 50- and 100 -year floods and for the floodway were previously determined by the U.S. Army Corps of Engineers for the Yakima River. Flood profiles for the 10- and 500 -year events were developed by the study contractor by substituting the respec- tive discharges into the U.S. Army Corps of Engineers HEC -2 step - backwater model (Reference 7). Flood profiles were drawn showing computed water -surface elevations to an accuracy of 0.5 foot for floods of the selected recurrence intervals (Exhibit 1). The roughness coefficients (Manning's "n") for the Yakima River, determined by the U.S. Army Corps of Engineers, ranged from 0.025 to 0.035 for the channels and'from 0.035 to 0.150 for the overbanks. The coefficients were verified by field inspection. For Wide Hollow and Bachelor Creeks and Spring Creek 1, the channel and overbank roughness factors were determined by the study contractor and were based on field inspection and photographs at each cross section location. Values of the channel and overbank varied from;. 0.045 to 0.050 for the channels, and a value of 0.150 was used for the overbanks. The hydraulic analyses for this study are based on the effects of unobstructed flow. The flood elevations are, thus, consideredvalid only if hydraulic structures remain unobstructed and do not fail. A11 elevations are referenced to the National Geodetic Vertical Datum of 1929 (NGVD). Elevation reference marks used in the study are shown on the maps. 4.0 FLOOD PLAIN MANAGEMENT APPLICATIONS A prime purpose of the National Flood Insurance Program, is to encourage State and local governments to adopt sound flood plain management pro- grams. Each Flood Insurance Study, therefore, includes a flood boundary map designed to assist communities in developing sound flood plain management measures. 4.1 Flood Boundaries In order to provide a national standard without regional discrimina- tion, the 100 -year flood has been adopted by the Federal Insurance Administration as the base flood for purposes of flood plain manage - 12 ment measures. The 500 -year flood is employed to indicate additional areas of flood risk in the community. For each stream studied in detail, the boundaries of the 100- and 500 -year floods have been delineated using the flood elevations determined at each cross section; between cross sections, the boundaries were interpolated using topographic maps at a scale of 1:12,000, with a contour interval of 5 feet, for the Yakima River (Reference 8) and at a scale of 1:4,800, with a contour interval of 4 feet, for the remaining streams (Reference 9). Flood boundaries for the 100- and 500 -year floods are shown on the Flood Boundary and Floodway Map (Exhibit 2). In cases where 100 - and 500 -year flood boundaries are close together, only the 100 - year flood boundary is shown. Small areas within the flood boundaries may lie above the flood elevations and, therefore, not be subject to flooding; owing to limitations of the map scale, such areas are not shown. 4.2 Floodways Encroachment on flood plains, such as artificial fill, reduces the flood -carrying capacity and increases flood heights, thus increasing flood hazards in areas beyond the encroachment itself. One'aspect of flood plain management involves balancing the economic gain 'from. flood plain development against the resulting increase in flood hazard. For purposes of the National Flood Insurance Program, the concept of a floodway is used as a tool to assist local communities in this aspect of flood plain management. Under this concept, the area of the 100 -year flood is divided into a floodway and a floodway fringe. The floodway is the channel of a stream, plus any adjacent flood plain areas, that must be kept free of encroachment in order that the 100 -year flood be carried without substantial increases in flood heights. As minimum standards, the Federal Insurance Admin- istration limits such increases in flood heights to 1.0 foot, provided that hazardous velocities are not produced. The floodways were computed on the basis of equal conveyance reduction from each side of the flood plain. The results of these computations are tabulated at selected cross sections for each stream segment for which a floodway is computed (Table 2). On. Spring Creek 1 and Spring Creek 1 Tributaries 1 and 2, the floodways are coincident with the channel banks. As shown on the Flood Boundary and Floodway Map (Exhibit 2), the floodway boundaries were determined at cross sections; between cross sections, the boundaries were interpolated. In cases where the floodway and 100 -year flood boundaries are close together, only the floodway boundary has been'shown. 13 FLOODING SOURCE FLOODWAY BASE FLOOD WATER SURFACE ELEVATION rgOcc SErmTnN nTcTANrP WIDTH (FEET) SECTION AREA (SQUARE FEET) MEAN VELOCITY (FEET PER SECOND) REGULATORYI WITHOUT FLOODWAY (FEET WITH FLOODWAY I NGVD) INCREASE Yakima River A 113.20 19342 7,190 7.6 1,033.0 1,033.0 1,033.0 0.0 B 113.83 17042 14,607 3.8 1,040.3 1,040.3 1,040.5 0.2 C 114.12 1760/1003 7,594 7.2 1,043.3 1,043.3 1,043.4 0.1 D 114.40 558/1653 5,218 10.5 1,048.2 1,048.2 1,048.2 0.0 E 114.60 742/3753 7,093 7.8 1,052.6 1,052.6 1,052.7 0.1 F 114.85 1092/8403 7,183 7.7 1,057.7 1,057.7 1,058.3 0.6 G 115.20 847/3153 6,074 9.1 1,063.5 1,063.5 1,064.1 0.6 H 115.42 1143/2102 10,266 5.4 1,067.5 1,067.5 1,068.4 0.9 I 115.82 893 6,967 7.9 1,072.6 1,072.6 1,073.4 0.8 J 116.10 1002/7503 4,423 12.4 1,077.8 1,077.8 1,078.2 0.4 Wide Hollow Creek A 4.52 45 167 3.8 1,048.4 1,048.4 1,048.4 0.0 B 4.67 40 126 5.1 1,052.1 1,052.1 1,052.1 0.0 C 4.81 17 79 8.1 1,058.4 1,058.4 1,059.2 0.8 D 4.95 270 374 1.7 1,064.4 1,064.4 1,065.0 0.6 E 5.17 35 126 5.1 1,069.9 1,069.9 1,069.9 0.0 F 5.38 50 146 4.4 1,076.2 1,076.2 1,076.5 0.3 G 6.89 39 99 5.4 1,116.8 1,116.8 1,117.2 0.4 H 7.17 50/30 125 4.3 1,125.2 1,125.2 1,125.4 0.2 1Miles Above Mouth 2Floodway Lies Entirely Outside Corporate Limits 3Width/Width Within Corporate Limits TABLE2 FEDERAL EMERGENCY MANAGEMENT AGENCY Federal Insurance Administration . FLOODWAY DATA A CITY OF YAKIMA, WA (YAKIMA CO.) YAKIMA RIVER -WIDE HOLLOW CREEK FLOODING SOURCE FLOODWAY BASE FLOOD WATER SURFACE ELEVATION CROSS SECTION 1 DISTANCE WIDTH (FEET) SECTION AREA (SQUARE FEET) MEAN VELOCITY (FEET PER SECOND) REGULATORY WITHOUT FLOODWAY (FEET WITH FLOODWAY NGVD) INCREASE Bachelor Creek •t� lam. r, M • A • 1,.85 300/2902 873 1,033.4 1,033.4. 1,033.6 0.2 B 1.89 200 872 1,037.5 1,037.5 1,037.7 0.2 C 2:45 150 661 1,050.6 1,050.6 1,.051.4 0.8 D 2.84 165 325 1,056.6 1,056.6 1,056.6 0.0 E 3.05 97 353 1,062.3 1",062.,3 1,062.7 0.4 F 3.27 300 945 1,066.7 1,066.7 1,067.5 0.8 G 3.40 166 555 1,071.1 1,071.1 1,071.8 0.7 'Miles Above Mouth 2Width/Width Within Corporate Limits TABLE 2 FEDERAL EMERGENCY MANAGEMENT AGENCY Federal Insurance Administration FLOODWAY DATA CITY OF YAKIMA, WA (YAKIMA CO.) BACHELOR CREEK The area between the floodway and the boundary of the 100 -year flood' is termed the floodway fringe. The floodway fringe thus encompasses the portion of the flood plain that could be completely obstructed without increasing the water -surface elevation of the 100 -year flood more than 1.0 foot at any point. Typical relationships between the floodway and the floodway fringe and their significance to flood plain development are shown in Figure 5. _ _ FLOODWAY FRINGE t 100 -YEAR FLOOD PLAIN FLOOD ELEVATION WHEN CONFINED WITHIN FLOODWAY ENCROACHMENT C FLOODWAY STREAM E-CHANNEL� SURCHARGE` FLOODWAY�. FRINGE D ENCROACHMENT AREA OF FLOOD PLAIN THAT COULD BE USED FOR DEVELOPMENT BY RAISING GROUND FLOOD ELEVATION BEFORE ENCROACHMENT ON FLOOD PLAIN LINE AB IS THE FLOOD ELEVATION BEFORE ENCROACHMENT. LINE CD IS THE FLOOD ELEVATION AFTER ENCROACHMENT. 'SURCHARGE IS NOT TO EXCEED 1.0 FOOT (FIA REQUIREMENT) OR LESSER AMOUNT IF SPECIFIED BY STATE. Figure 5. Floodway Schematic 5.0 INSURANCE APPLICATION In order to establish actuarial insurance rates, the Federal Insurance Administration has developed a process to transform the data from the engineering study into flood insurance criteria. This process includes the determination of reaches, Flood Hazard Factors, and flood insurance zone designations for each flooding source studied in detail affecting the City of Yakima. 16 5.1 Reach Determinations Reaches are defined as lengths of watercourses having,relatively the same flood hazard, based on the average weighted difference in water -surface elevations between the 10- and 100 -year floods. This difference does not have a variation greater than that indicated in the following table for more than 20 percent of the reach: Average Difference Between 10- and 100 -year Floods Variation Less than 2 feet 2 to 7 feet 0.5 foot 1.0 foot Eight reaches meeting the above criteria were required for the flood- ing sources.of the City of Yakima. These included two reaches each on Wide Hollow Creek and Spring Creek 1. and one reach each on the Yakima River, Bachelor Creek, Spring Creek 1 Tributary 1, and•Spring Creek 1 Tributary 2. The locations of the reaches are shown on the Flood Profiles (Exhibit 1) and summarized in Table 3. 5.2 Flood Hazard Factors The Flood Hazard Factor (FHF) is the Federal Insurance Administration device used to correlate flood information with insurance rate tables. Correlations between property damage. from floods. and their FHF are used to set actuarial insurance premium rate tables based on FHFs from 005 to 200. The FHF for a reach is the average weighted difference between the 10- and 100 -year flood water -surface elevations expressed to the nearest one-half foot, and shown as a three -digit code. For example, if the difference between water -surface elevations of the 10- and 100 -year floods is 0.7 foot, the FHF is 005; if the difference is 1.4 feet, the FHF is 015; if the difference is 5.0 .feet, the FHF is 050. When the difference between the 10- and 100 -year water -surface elevations is greater than 10.0 feet, accuracy for the FHF is to the nearest foot. - 5.3 Flood Insurance -Zones After the determination of reaches and their respective Flood Hazard Factors, the entire incorporated area of the City of Yakima was divided into zones, each having a specific flood potential or hazard. Each zone was assigned one of the following flood insurance zone _ designations: ' Zones A2, A3, A4, and 47: 17 Special Flood Hazard Areas inundated by the 100 -year flood, determined by detailed methods; base flood elevations shown, and zones subdivided according to Flood Hazard Factors. FLOODING SOURCE 1 PANEL 2 ELEVATION DIFFERENCE BETWEEN 1% (100-YEAR) FLOOD AND FLOOD HAZARD FACTOR ZONE BASE FLOOD ELEVATION3 (FEET NGVD) 10% (1 n-YEAR) 2% (50-YEAR) 0.2% (500-YEAR) Yakima River Reach 1 0006 -3.60 -1.21 3.16 035 A7 Varies - See Map Bachelor Creek Reach 1- 0003 -1.30 -0.36 1.07 015 . A3 Varies - See Map Wide Hollow Creek Reach 1 0001 -1.45 -0.49 1.22 015 A3 Varies - See Map Reach 2 0003 -1.86 -0.68 1.76 020 A4 Varies - See Map Spring Creek 1 Reach 1 0003 -1.30 -0.36 1.07 015 A3 Varies - See Map Reach 2 0001,0003 -1.23 -0.34 0.83 010 A2 Varies - See Map Spring Creek 1 Tributary 1' Reach 1 0003 -1.2 -0.3 0.8 010 .A2 Varies - See Map Spring Creek 1 Tributary 2 Reach 1 0001 -1.2 -0.3 0.8 010 A2 Varies - See Map )Flood Insurance Rate Map Panel 2Weighted Average 3Rounded to Nearest Foot TABLE 3 FEDERAL EMERGENCY MANAGEMENT AGENCY Federal Insurance Administration FLOOD INSURANCE ZONE DATA CITU OF YAKIMA, WA (YAKIMA CO.) YAKIMA RIVER-BACHELOR CREEK-WIDE HOLLOW CREEK-SPRING CREEK 1— SPRING CREEK 1 TRIBUTARY 1-SPRING CREEK 1 TRIBUTARY 2 Zone B: Areas between the SpecialFloodHazard Areas and.the limits of the 500 -year flood, including areas of the 500 -year flood plainthat are protected from the 100 -year flood by dike, levee, or other water control structure; also areas subject to certain types of 100 -year shallow flooding where depths are less than 1.0 foot; and areas subject to 100 -year flooding from sources with drainage areas less. than 1 square mile. Zone B is not subdivided. Zone C: Areas of minimal flooding. The flood elevation differences, Flood Hazard Factors, flood insur- ance zones, and base flood elevations for each flooding source studied in detail in the community are summarized in Table 3. 5.4 Flood Insurance Rate Map Description The Flood Insurance Rate Map for the City of Yakima is, for insur- ance purposes, the principal result of the Flood Insurance Study. This map (published separately) contains the official delineation of flood insurance zones and base flood elevation lines. Base flood elevation lines show the locations of the expected whole -foot water - surface elevations of the base (100 -year) flood. This map is developed in accordance with the latest flood insurance map prepara- tion guidelines published by the Federal Insurance Administration. • 6.0 OTHER STUDIES A U.S. Army Corps of Engineers, Seattle District, report includes high- water profiles and flooded area maps for the Intermediate Regional Flood (100 -year recurrence interval) and the Standard Project Flood (Reference 3). In the course of subsequent studies of flooding in the Yakima River basin, the U.S. Army Corps of Engineers reevaluated the hydrological basis for the estimates of peak flood discharges (Reference 5). Revised flood profiles for the Yakima River, based on the reevaluated flood discharges, were not developed by the U.S. Army Corps of Engineers upstream of River Mile 103.8. The most recent U.S. Army Corps of Engineers studies derived an estimate of peak flood discharges and water -surface profiles for the reach of the Yakima River between Sunnyside Dam, near Parker (River Mile 103.8) and Mabton (River Mile 53.1) (Reference 5). The discharge and profile computa- tions performed for the Flood Insurance Study for the City of Yakima and those for neighboring communities are consistent with the U.S. Army Corps of Engineers studies. 19 this study is consistent with the Flood Insurance Studies.for the City of Union Gap (Reference 10)'and Yakima County (Reference 11). This study is authoritative for the purposes of the National Flood Insur- ance Program; data presented herein either supersede or are compatible with all previous determinations. 7.0 LOCATION OF DATA Survey, hydrologic, hydraulic, and other pertinent data used in this study can be obtained by contacting the Insurance and Mitigation Division, Federal Emergency Management Agency, Federal Regional Center, 130 228th Street SW., Bothell, Washington 98011. 8.0 BIBLIOGRAPHY AND REFERENCES 1. State of Washington, Office of Program Planning and Fiscal Management, Pocket Data Book -1975, Olympia, Washington, 1976 2. Washington State Planning and Community Affairs Agency, Growth of Cities and Towns, State of Washington, Calvin F. Schmid and Stanton E. Schmid, Olympia, Washington, 1969 3. U.S. Department of the Army, Corps of Engineers, Seattle District, Flood Plain Information - Yakima and Naches Rivers - Yakima -Union Gap, Washington, Seattle, Washington, 1970 4. U.S. Department of Commerce, National Oceanic and Atmospheric Admin- istration, Environmental Data Service, No. 60-45, Climate of Washington, Climatography of the United States, Earl L. Phillips, Silver Spring, Maryland, 1960 (Revised 1965) 5. U.S. Department of the Army, Corps of Engineers, Seattle District, Flood Plain Information - Yakima River - Parker to Mabton and Vicinity, Washington, Seattle, Washington, 1975 U.S. Water Resources Council, "Guidelines for Determining Flood Flow Frequencies," Bulletin 17, March 1976 6. 7. U.S. Department of the Army, Corps of Engineers, Hydrologic Engineer- ing Center, HEC -2 Water -Surface Profiles, Generalized Computer Program, Davis, California, November 1976 8. U.S. Department of the Army, Corps of Engineers, Seattle District, 'Topographic Maps, Scale 1:12,000, Contour Interval 5 feet: City of Yakima, Washington (1975) 20 9. Haner, Ross, and Sporseen, Topographic Maps, Scale 1:4800, Contour Interval 4 feet: City of Yakima, Washington (1976), Compiled (1977) 10. Federal Emergency Management Agency, Federal Insurance Administration, Flood Insurance Study, City of Union Gap, Yakima County, Washington, 1981 11. , Flood Insurance Study, Yakima County, Washington, (Unincorporated Areas), unpublished 21 1 LEVATION FEET NGVD 1070 1060 1050 1040 1030 1020 1010 1000 990 980 REACH 7 70NE A7 1- t-1 u L Q c�� l.. 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G LJ C L' 2 -2 LJ w w a Lu LL 1- r. 1 - CUL /E111 - N CUL'/E111 `1a $0 -.:'1O9 -YEAR 'FLOODS C RT J / 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 STREAM DISTANCE IN MILES ABOVE MOUTH LEGEND 500 -YEAR FLOOD 100 -YEAR FLOOD 50 -YEAR FLOOD 10 -YEAR FLOOD STREAMBED CROSS SECTION" LOCATION 0.9 1.0 1.1 1.2 1.3 Ce) W 1100 PRI r nrISIOCI 101) LEVATION FEET NGVD, 1090 1080 1070 1060 1050 gemmilmEgagimpothitammomminimmommimmommommummomminomminnimmu ilmilmoormammairmauriregenommimminimmommmEmimminimmEENEEE 111111111111111111111111111110111MAtgliplIME1111111111111111111111111111 11111111111111111111111111111111111111111111111111 mmumminmomlloommimmilmmimmimmEmommilmmimmin 111111111111211111111111.111111.11111111.111.1.1.1.1.11.1111111111.111111.1111.1.111111111111 111111111111111111111111111111111 1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111 111111111 MMEMMIIIIIIMMEMMIIIIIIMMMEMMEMMEMMEMMEMEMMMIEMEMIIMMIIIIIIMIMIEMEIMMIIMEIMMEMMEMEIEMMIMMEMM 1111111111,11110111111111 111111111111111111111111111111111111111111111111111111111111111111111111111111111 iimmoshodiviiimmeglimilionsiimmooloopo 11 111111 111 111111111111111111111P10 mnionnonnunehmunnonmommommmonnummummmonminnm 1.3 1.4 1.5 1.6 STREAM. DISTANCE IN MILES ABOVE MOUTH 1.7 1.8 LEGEND. 500 -YEAR FLOOD 100 -YEAR FLOOD 50 -YEAR FLOOD 10 -YEAR FLOOD f/WWA STREAMBED CROSS SECTION LOCATION gildriggagka L VATION FEET NGVD 1090 1080 1070 RFACH 1 11 ZON P2 t - S u u. J c Qf 3 i zF °I w Far LEGEND 500 - YEAR FLOOD ■ %`Q7'1/4\/e‘o 1060 0.0 0.1 0.2 STREAM DISTANCE IN MILES ABOVE MOUTH 100 - YEAR FLOOD 50 - YEAR FLOOD 10 - YEAR FLOOD STREAM BED CROSS SECTION LOCATION H W [MI -ant CP' IN CREEK 1 TRI: _ ' Y U z w (9 z.9 Q LLI c Q- aE 20 z -o U 2a) Q2 )- m >. Z 3 0ct C7 c— �. LU J LL w LU LL 12P LEVATION FEET NGVD 1110 1100 1090 1080 1070 0.0 11, . : ; t 11o • 1 41 II mommommummummumalemmomemmimmommormsmommommummomummummimmammommommommommommommommommommummimmummummummommMIIMMINIMMEMOMWARIWOMMEMAMMEMMMIIMMIMMEMMEMMEMEMOMMEMMOMOMMIMMEMEMMEIMMEMEMEMMEMMEMMEMMEMMEMEMMEMMEMEMEMEMMEMEMMEMEMEMEMEMMEMMEMMEIMMINIMMEMMOZEOEMMEMSMEMMINIMMEMEMMEMEMOMMEMMOMMMEMMEMMEMOMMEMEMEMMMERMEMMIMMEMEMOMMEMMEMMEMEMEMMOMMEMMEMMOMMMMEMMEMENMEMMOMEMMEMNwOMMEMPringgNIOMMOMEMEMMEMEMEMMEMEMEMMEMEMMEMEMEMEMMEMEMEMMEMMIIMMEMMEMMEMMEMEMEMMEMMEMMIIMMEMEMINIM1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111 _4010ii1 I 011111111111111111111111111111111111.111111111111111111111111 immimmmummmommaimmummommommummummommomummommummmommommommommummommomm mommommommommommommummmommimmommummummommummommommommummimmommommommummommmummomm 0.1 0.2 0.3 STREAM DISTANCE IN MILES ABOVE MOUTH 0.4 LEGEND 500 - YEAR FLOOD 100 - YEAR FLOOD 50 - YEAR FLOOD 10 - YEAR FLOOD STREAM BED CROSS SECTION LOCATION } U z W C7 c z .s Q W 2 W QE gtu a2 U i z 5 LL Q O> - cc m } t ww J LL Q CC w w 13P hu6r drY'.iq. i 1 ,01 ,.-.,'�a�,1.r��11��,,,�,.,��',�l,�.l�,�`�iF;4�Jt��r�fH,�4�,�t,,dlr�li'i,fEig't,��l,,tl��'�1i11•.�,.E�`Y,JIF�Y� Il., t'..YYly l; ��1 .'Iw,r I! ;�' J � 4 a.r I) � .-t'', Prn�P#�;"�r�.rF�td,rlwir. KEY TO MAP 500 -Year Flood Boundary 10O -Year Flood Boundary Zone Designations JOINS PANEL 0730 ZONEC 100 -Year Flood Boundary 500 -Year Hood Boundary ELEVATION (FT, NGVD) :- DESCRIPTION OF LOCATION •:'1102.5$ • 0.5 -inch square holt cm east side of power pole number 312200, approximately 3000 feet northwest of interchange at East Selah and 'Interstate 11ialway 82, on west side of lake' at the'Yakima Cement and Rock Pita 1195.53 Washington State Highway Department brass cap number 39-25, located on top of curb, northeast corner of overpass at Firing Center Road and Intestate Highway 82. Base Flood Elevation Line With Elevation In Feet** _.573 Base Flood Elevation in Feet Where Uniform Within Zone** Elevation Reference Mark RM7X Zone D Boundary River Mile •M1.5 (EL 987) *Referenced to the National Geodetic Vertical Datum of 1929 EXPLANATION OF ZONE DESIGNATIONS ZONE B 7 126 ZONE B Yakim 1r :Gerlier _Military Reservation AREA NOT INCL,UDEI- ZONE -EXPLANATION A Areas of 100 -year flood; base flood elevations and flood hazard factors not determined. AO Areas of 100 -year shallow flooding where depths are between one (1) and three (3) feet; average depths of inundation are shown, but no flood hazard factors are determined. AM Areas of 100 -year shallow flooding where depths are between one (1) and three (3) feet; base flood elevations are shown, but no flood hazard factors are determined. A1 -A30 Areas of 100 -year flood; base flood elevations and flood hazard factors determined. A99 Areas of 100 -year flood to be protected by flood k_. protection system under construction; base flood elevations and flood hazard factors not determined. E1 Areas between limits of the 100 -year flood and 500 - year flood; or certain areas subject to 100 -year flood- ing with average depths less than one (1) foot or where the contributing drainage area is less than one square mile; or areas protected by levees from the base flood. (Medium shading) C Areas of minimal flooding. (No shading) Areas .of 'undetermined, but possible, flood hazards. V Areas of 100 -year coastal flood with velocity (wave action); base flood elevations and flood hazard factors not determined. V1 -V30 Areas of 100 -year coastal flood with velocity (wave action); base flood elevations and flood hazard factors determined. NOTES TO :USER tainareas'not ire tjte special floodhaza tlareas may be''pri tected.by-flood control structures This map is tor flood insurance purposes only; it does`not n ccs?'';; sarily show all areas subject to flooding in the commuiiity all planimetric features outside special flood hazard areas. For adjoining map panels, see separately printed Index To Map Panels. • INITIAL IDENTIFICATION: DECEMBER 27, 1974 FLOOD HAZARD BOUNDARY MAP REVISIONS:, AUGUST 9, 1977 FLOOD INSURANCE RATE MAP EFFECTIVE: JUNE 5, 1985 O.INS PANEL 0 Refer to the FLOOD INSURANCE RATE MAP EFFECTIVE date shown on this map to determine when actuarial rates apply to structures in the zones where elevations or depths have been estab- lished. To determine if flood insurance is available in this community, contact your insuranceagent, or call the National Flood Insurance Program, at (800) 638-6620. ZONE B. 7097 ZONE B 11 • 11 11 11 11 11 11 11 11 11. APPROXIMATE SCALE IN FEET 1000 0 1000 l NATIONAL FLOOD INSURANCE PROGRAM FIRM FLOOD INSURANCE RATE MAP YAKIMA COUNTY, WASHINGTON (UNINCORPORATED AREAS) 11 11 11 , 11 11 11 11 11 0 0 0 11 11 1) - 11 11 11 0 11 PANEL r140 OF 2515 (SEE MAP.INDEX FOR PANELS, NOT PRINTED) ZONE B ZONE A7 JYAKIMA RIVER 10 COMMUNITY -PANEL NUMBER c111917 n7ln -•R JOINS PANEL 0740 ZONE C KEY TO MAP 500 -Year Flood Boundary 100 -Year Flood Boundary Zone Designations` 10.0 -Year Flood Boundary 500 -Year Flood Boundary Base Flood Elevation Line With Elevation In Feet** PROFILE'. BASE LINE Base Flood Elevation in Feet Where Uniform Within Zone** Elevation Reference Mark Zone D Boundary River Mile **Referenced to the National Geodetic Vertical Datum of 1929 513------- -- (EL 987) RM7X •M1.5 EXPLANATION OF ZONE DESIGNATIONS ZONE A EXPLANATION Areas of 100 -year flood; base flood elevations and flood hazard factors not determined. AO Areas of 100 -year shallow flooding where depths are between one (1) and three (3) feet; average depths of inundation are shown, but no flood hazard factors are determined. AH Areas of 100 -year shallow flooding where depths are between one (1) and three (3) feet; base flood elevations are shown, but no flood hazard factors are determined. A1 -A30 Areas of 100 -year flood; base flood elevations and flood hazard factors determined. A99 Areas of 100 -year flood to be protected by flood protection system under construction; base flood elevations and flood hazard factors not determined: B Areas between limits of the 100 -year flood and 500 - year flood; or certain areas subject to 100 -year flood- ing with average depths less than one (1) foot or where the contributing drainage area is less than one square mile; or areas protected by levees from the base flood. (Medium shading) C Areas of minimal flooding. (No shading) D Areas of undetermined, but possible, flood hazards. V Areas of 100 -year coastal flood with velocity (wave action); base flood elevations and flood hazard factors :: nOf determined. V1 -V30 Areas Of 100 -year coastal flood with velocity (wave action); base flood elevations and flood hazard Factors determined. City of Yakima ',::‘,,,_NOTES TO.USER Certain areas not.=in .the`sp.ecial floor, hazard. areas may b'e'protected by-`flood'ontrol structures.- ThisisWfor flood insurance purposes only; it does not neces ` sarily show all areas subject to flooding in the community or all planimetric features outside special flood hazard areas. For adjoining map panels, see separately printed Index To Map Panels. INITIAL IDENTIFICATION: DECEMBER 27, 1974 FLOOD HAZARD BOUNDARY MAP REVISIONS: AUGUST 9, 1977 FLOOD INSURANCE RATE MAP EFFECTIVE: JUNE 5, 1985 For description of elevation reference marks, see panel S30217 0994 Refer to the FLOOD INSURANCE RATE MAP EFFECTIVE date shown on this map to determine when actuarial rates apply to structures in the zones where elevations or depths have been estab- Iished. To determine if flood insurance is available in this community, contact your insurance agent, or call the National Flood Insurance Program, at (800) 638-6620. EAST NOB BOULEVARD APPROXIMATE SCALE IN FEET 1000 0 1000 0 1 w ctz O. z 0 ZONE C 31 ZONE C 31 31 ZONE C IINATIONAL FLOOD INSURANCE PROGRAM FIRM FLOOD INSURANCE RATE MAP YAKIMA COUNTY, WASHINGTON (UNINCORPORATED AREAS) PANEL 1055 OF 2575 (SEE MAP INDEX FOR PANELS NOT PRINTED) COMMUNITY -PANEL NUMBER ;will -7 inns Q • KEY TO MAP 5N -Year Flood Boundary 100 -Year Flood Boundary Zone Designations' fi /17 ,, *\ .// ‘* /j (////-V/ , • ‘ . /...0.. N %.. 100 -Year Flood Boundary 506 -Year Flood Boundary Base Flood Elevation Line WA Elevation In Feet** 5 1 3 Base Flood Elevation in Feet Where Uniform Within Zone** Ele'vation Reference Mark Zone D Boundary River Mile (EL 987) RM7x •M1,5 *;Referenced to the National Geodetic Vertical Datum of 1929 !EXPLANATION OF ZONE DESIGNATIONS ZONE EXPLANATION Areas of 100 -year flood; base flood elevations and flood hazard factors not determined. •A0 Areas of 100 -year shallow flooding where depths are between one (1) and three (3) feet; -average depths of inundation are shown, but no flood hazard factors are determined. A H Areas of 100 -year shallow flooding where depths are between one (1) and three (3) feet; base flood elevations are shown, but no flood hazard factors are determined. Al -A30 Areas of 100 -year flood; base flood elevations and flood hazard factors determined. A99 Areas of 100 -year flood to be protected by flood protection system under construction; base flood elevations and flood hazard factors not determined..-„ c 5D V V1 -V30 Areas between limits of the 100 -year flood and 500- .„ year flood; or certain areassubject to 100 -year flood- ing with average depth's less than ,one (1) foot or where the contributing drainage area is less than one square mile; or areas protected by levees from the base flood. (Medium shading) Areas of minimal flooding. (No shading) Areas of undetermined, but possible, flood hazards.;:;:, Areas of 100 -year coastal flood with velocity (wave action); base flood elevations and flood hazard factors not determined. Areas -of 100 year coastal flood with velocity (wave . „ action); base flood elevations and flood hazard factors determined. • NOTES TO USER ,-.!!-Ltairi areas -not irithe special flooq,bazarci areasIzones A -and m' be protected by flood control structutes This map is for:flood.,,insuranc.e,purposes only it does -not.neces-..., sarily show all ,dreaS Subje'tt. to' flooding in the—dOrrilildriity or - all planimetric features outside special flood hazard areas. For adjoining map panels, see separately printed --Index To Map - Panels. INITIAL IDENTIFICATION: DECEMBER 27, 1974 FLOOD HAZARD BOUNDARY MAP REVISIONS: AUGUST 9, 1977 FLOOD INSURANCE RATE MAP EFFECTIVE: JUNE 5, 1985 1 Refer to the FLOOD INSURANCE RATE MAP EFFECTIVE date shown on this map to determine when actuarial rates apply to structures in the zones where elevations or depths have been estab- lilled. TO determine if flood insurance is available in this community, contact your insurance agent, or call the National Flood Insurance I4ogram, at (800) 638-6620. APPROXIMATE SCALE IN FEET 1000 0 1000 •-- 0 34 ZONE A4 31 w u - ZONE C ZONE A4 --- NATIONAL FLOOD INSURANCE PROGRAM FIRM FLOOD INSURANCE RATE MAP YAKIMA COUNTY, WASHINGTON (UNINCORPORATED AREAS) PANEL 1060 OF 2515 (SEE MAP INDEX FOR PANELS NOT PRINTED) COMMUNITY -PANEL NUMBER 5311217 1ORO 13 LIUI 1Y,111411r.(iyttlr0i'dti 1 h - 't .I r i ��J I 4' '.! :'A:�i'�i'aI ���z�a��,c7kmI ���'v�+'�'ar�rv�.�'�°Y•:�ri.t�����,�,�.w+.ai�arvYxl:isle'x:..,,.Rr!,t,;t1F. �+>r}�e,��r'+.r,.�,�, ��,.„�'�c�i.�Nl'�i?.;; 8�t'tlu' �:i4,7.#r.,�{.a},!, ht,gn' , ti N,o,,T•1.p4ay1r G�tla 1* JOINS PANEL 1055 ELEVATION REFERENCE MARKS REFERENCE ELEVATION MARK (FT. NGVD) DESCRIPTION OF LOCATION RM39* :974:41 ' ` :" On top of the southerly top nut of a fire hydrant at the inter - `section of 4th Street and West California Street. RM40* 983.(x9. Chiseled "X" back of sidewalk, northeast corner of 5th Street an'd Ahtanum Road in Union Gap. Vrnrwaat tct.l. ',+,ak"uaNMra' *LOCATED IN AREA NOT INCLUDED KEY TO MAP 5W0 -Year Flood Boundary 150 -Year Flood Boundary Zone Designations ZONE A4 100 -Year Flood Boundary 500 -Year Flood Boundary Brse Flood Elevation Lirie With Elevation In Feet** Brse Flood Elevation in Feet Where Uniform Within Zone** Evation Reference Mark 7_)ne D Boundary River Mile ZONE C Culvert -513 --- (EL 987) RM7x •M1.5 *'',Referenced to the National Geodetic Vertical Datum of 1929 AHTANUM 96t Spring Creek 2 ZONE Al' 973 ZONE B 970 ZONE Alm�x5 ZONE B ZONE Al EXPLANATION OF ZONE DESIGNATIONS ZONE EXPLANATION Areas of 100 -year flood; base flood elevations and flood hazard factors not determined. AQ Areas of 100 -year shallow flooding ,where: -depths are between one (1) and three (3) feet; average d_e,pth:s w . of inundation are shown, but no flood hazard factors are determined. AH H Areas of 100 -year shallow flooding where depths' are between one (1) and three (3) feet; base flood elevations are shown, but no flood hazard factors, are determined. Areas of 100 -year flood; base flood elevations 'and. flood hazard factors determined. Areas of 100 -year flood to be protected by flood protection system under construction; base, flood elevations and flood hazard factors not determined. Areas between limits of the 100 -year flood and 500- , year flood; or certain areas subject to 100 -year flood- ing with average depths Tess than one (1) foot or where the contributing drainage area is Tess than one square mile; or areas protected by levees from the base flood_. (Medium shading) Areas of minimal flooding. (No shading) Areas of undetermined, but possible, flood hazards. Areas of 100 -year coastal flood with velocity (wave action); baseflood elevations and flood hazard factors not determined, Al -A30 A99 V17V30 Areas of 106 -year 'coastal flood with v elocity (wave action); base flood elevations and flood hazard factors.. determined. ZONE C NOTE: YAKIMA INDIA. RESERVATIOI BOUNDARY; CC INCIDENT WITI DRAINAGE 967 ZONE C 964 962 ZONE C ZONE B Culvert 953 956 ZONE A4 ID w z z a -ZONE A9 eo TES .TO USER Certain areas not in the`'special_flood,h'aiard areas`(zones A.:an may be protected by. flood 'control structures,' This map is fcir flood insurance purposes only; it does not_nece sarily show all areas subject to flooding in the community or al} planimetric features outside special flood hazard areas. For adjoining map panels, see separately printed Index To Map Pafnels. ZONE Al 955 Spring Creek 2 INITIAL IDENTIFICATION: DECEMBER 27, 1974 FLOOD HAZARD BOUNDARY MAP REVISIONS: AUGUST 9, 1977 FLOOD'INSURANCE RATE MAP EFFECTIVE: JUNE 5, 1985 Refer to the FLOOD INSURANCE RATE MAP EFFECTIVE date shown on this map to determine when actuarial rates apply to structures in the zones where elevations or depths have been estab- lished. 10 determine if flood insurance is available in this community, contact your insurance agent, or call the National Flood Insurance PCogram, at (800) 638-6620. APPROXIMATE SCALE IN FEE -r AREA NOT. INCLUDED 9. 5 ZONE B IINATIONAL FLOOD INSURANCE PROGRAM F1RM FLOOD INSURANCE RATE MAP YAKIMA COUNTY, WASHINGTON (UNINCORPORATED AREAS) PANEL 1061 OF 2515 (SEE MAP INDEX FOR PANELS NOT PRINTED) COMMUNITY -PANEL NUMBER sum 1nRi R I 4, •.1 • , • • 74- , • •: , JOINS PANEL 1055 l,4****Olgar Aft"40e14#04#*: 1.*N. ;; titutiiitiii;14;; 441114000t4vt044 siiktitt0istatc *44444. : 04%0 4tittittit.0444, 04flitt0404.0104 ,441.01,itt,040,-0• 443414r4tral 444;4 1114e irt*t*tti44110.10. 4r0:44•14%*1.1 441thtit,143#0. Astiitt*Y444 ifv0-4.41r4 f..4;010t * 4446* f Mt' '")tr 4, '41***ittiort, , 40401-0;0att..`ti f* Stittk.04,40.at ltti*e4 #4. lktitif* 4,11'.0 i .. 4 0 • . , II, • • , • • 18 0 0 OINS PANEL .7 .7,, • 7,, 7 KEY TO MAP 500 -Year Flood Boundary 100 -Year Flood Boundary Zone Designations 1QQ-Year Flood Boundary 500 -Year Flood Boundary ;3• 138e Flood Elevation Line With Elevation In Feet** Brise Flood Elevation in Feet Where Uniform" Within Zone** ElLvation Reference Mark Zoe D Boundary River Mile 513 (EL 987) RM 7x •M1.5 "Referenced to the National Geodetic Vertical Datum of 1929 -EXPLANATION OF ZONE DESIGNATIONS ZONE EXPLANATION Areas of 100 -year flood; base flood elevations .and flood hazard factors not determined. AO Areas of 100 -year shallow flooding where, ‘depths are between one (1) and three (3) feet; average depths of inundation are shown, but no flood hazard factors are determined, AH Areas..,If.,:1Q9.-year shallow flooding where deriths are between one (1) and three (3) feet;'base flood elevations are shown, but no flood hazard factors are determined. Al -A30 Areas of 100 -year flood; base flood elevations and flood hazard factors determined. A99 Areas of 100 -year flood to be protected by flood protection system under construction; base flood elevations and flood hazard factors not determined. B Areas between limits of the 100 -year flood and 50 year flood; or certain areas subject to 100 -year flood- ing with average depths less than one (1) foot or where the contributing drainage area is less than one square mile; or areas protected by levees From the base flood. (Medium shading) C Areas of Mink -hal flooding. (NO shading) D Areas of undetermined, but possible, flood hazards. V Areas of 100 -year coastal flood with velocity (wave action); base flood elevations and flood hazard factors 1/1-V30 not determined. Areas of 100 -year coastal flood with velocity (wave action); base flood elevations and flood hazard factors determined. Ttain areas !-?9t...10.:0,..,._specialf1994..__hrazard. areas zones A andy,),, b yflood 'control structures. : This map is'fOr-'lloddirisunance purposes only; it does not neces- - sa!rily show all areassubject to flooding in tne,'..6o'mtnunjty or. all planimetric features outside special flood hazard areas. For adjoining map panels, see separately printed Index To Map Panels. INITIAL IDENTIFICATION: DECEMBER 27,1974 FLOOD HAZARD BOUNDARY MAP REVISIONS: AUGUST 9, 1977 FLOOD INSURANCE RATE MAP EFFECTIVE: JUNE 5,1985 Refer to the FLOOD INSURANCE RATE MAP EFFECTIVE date shown on this map to determine when actuarial rates apply to s ructures in the zones where elevations or depths have been estab- lished. 10 determine if flood insurance is available in this community, contact your insurance agent, or call the National Flood Insurance Program,at (800) 638-6620. 1 000 42 APPROXIMATE SCALE IN FEET 0 I -I I-1 I-1 firmorntatir •, . JOINS PANEL 1044 • • 28 1000 • • NATIONAL FLOOD INSURANCE PROGRAM FIRM FLOOD INSURANCE RATE MAP YAKIMA COUNTY, WASHINGTON (UNINCORPORATED AREAS ) •PANEL 1065 OF 2575 (SEE MAP INDEX FOR PANELS NOT PRINTED) COMMUNITY -PANEL NUMBER 530217 1065 B ^��I �� '!�'''�''t,i• {'d 1e i.r,fi d;; ,.., "his+;eiFi �*�'-k=°;{l�v:'l>:. r! � ., �• t,,,�.�+, vw�e;•.� .,5..�..,� 5,., } 9 ar 4a.l: (14?0;!I.444,ifvii; 11,141 44 1 4th 9N��A'Y.0 I.} KEY TO MAP 5'0 -Year Flood Boundary 140 -Year Flood Boundary Gne Designations JOINS PANEL 1060 ZONE A4 ZONE B CHARRON ROAD 110 -Year Flood Boundary 510 -Year Flood Boundary Else Flood Elevation Line Vith Elevation in Feet** Else Flood Elevation in Feet Vhere Uniform Within Zone** hevation Reference Mark Zine D Boundary Fiver Mile *Referenced to the National Geodetic Vertical Datum of 1929 513---�-�^- (EL 987) RM7X .M1.5 EXPLANATION OF ZONE DESIGNATIONS ".bNE EXPLANATION Areas of 100 -year flood; base flood elevation s and flood hazard factors not determined. AO Areas of 100 -year shallow flooding where •_depths, are between one (1) and three (3) feet; average depths' of inundation are shown, but no flood hazard factors` are determined. AH Areas of 100 -year shallow flooding where depths are between one (1) and three (3) feet; base flood elevations are shown, but no flood hazard factors r are determined. M,1 -A30 .:'Areas of 100 -year flood; base flood elevations and flood hazard factors determined. Areas of 100 -year flood to be protected by flood protection system under construction; base flood elevations and flood hazard factors not determined. Areas between limits of the 100 -year flood and 500- year flood; or certain areas subject to 100 -year flood- ing with average depths Tess than one (1) foot or where the contributing drainage area is less than one square mile; or areas protected by levees from the base flood.:. (Medium shading) Areas of minimal flooding. (No shading) Areas of undetermined, but possible, flood hazards: Areas of 100 -year coastal flood with velocity (wave action); base flood elevations and flood hazard factors not determined. A99 :'ROAD V1 -V30 Areas of ,100 -year coastal flood with velocity ;(wave :. i• action); base flood elevations and flood hazard factors determined. NOTES„TO U !1 C rtaip; areas Oot inthespecial flood hazard areas (zones maybe protected by flood control structures, This map is -for -=flood Tinsurance piar•poses-'only; it 'does not neves sarily show all areas subject to flooding in the community or all planimetric features outside special flood hazard areas. Far adjoining map panels, see separately printed index To Map Panels. INITIAL IDENTIFICATION: DECEMBER 27, 1974 FLOOD HAZARD BOUNDARY MAP REVISIONS: AUGUST 9, 1977 FAUCHER ROAD FLOOD INSURANCE RATE MAP EFFECTIVE: JUNE5,1985 0 0 JOINS PANEL 16- Refer to the FLOOD INSURANCE RATE MAP EFFECTIVE date shown on this map to determine when actuarial rates apply to stlructures in the zones where elevations or depths have been estab- lished. To determine if flood insurance is available in this community, contact your insurance agent, or call the National Flood Insurance Program, at (800) 638-6620. APPROXIMATE SCALE IN FEET 1000 0 1000 1 - 1 1� - NATIONAL FLOOD INSURANCE PROGRAM FIRM fL00D INSURANCE RATE MAP 21- YAKIMA COUNTY, WASHINGTON (UN INCORPORATED AREAS) PANEL 1070 OF 2575 (SEE MAP INDEX FOR PANELS NOT PRINTED) 28- r \r 2 a ``--\\ �\\ COMMUNITY -PANEL NUMBER 51017 10111 B 111 441 Vitgitt6 3'" k+• t V { 1 "d� �y S tYbC� �lNiow� r✓+111,Pr A' COMMUNITY -PANEL UMBER 0002 A Wide Hollow Creek NOB HILL BLVD 40TH AVENUE SOUTH 5TH ; THIS AREA OF THE COMMUNITY SHOWN AS INSET A ON PANEL 530311 0006 A 11 00115 A *PANEL NOT PRINTED AREA IN ZONE C 111111111111111 ,NATIONAL FLOOD INSURANCE PROGRM FIRM FLOOD INSURANCE RATE MAP CITY OF YAKIMA, WASHINGTON YAKIMA COUNTY MAP INDEX PANELS PRINTED: 1, 3,6 COMMUNITY -PANEL NUMBERS ;1n1» nnni.nnnF ,C. Ntalt Lail ht .�F'.Y.'"4 x& v: ln"E14 ..!�,' a'V iry 449 fA i^P ex,:4 i'MJrir.7rk y:,ki�.nJf SYk KEY TO MAP 500 -Year Flood Boundary A I' 10q -Year Flood Boundary Zone Designations* With Date of Identification e.g:' 12/2/74 100 -Year Flood Boundary.: :I. 500 -Year Flood Boundary.,: Base Flood Elevation Line With Elevation In Feet** - Base Flood Elevation in Feet Where Uniform Within Zone** 513— (EL 987) Elevation Reference Mark:: Ryer Mile ! M1.5 **'I Referenced to the:National Geodetic Vertical Datum of 1929 RM7X_ r ) *EXPLANATION OF ZONE DESIGNATIONS ONE -EXPLANATION A Areas of 100-year.;`flood; .base flood elevations',and flood hazard factors not deterrnine.d. , AO Areas of 100 -year shallow flooding where ,.depths are between one (1) and three -(3) feet;•average depths of inundation are shown,'but no flood, hazard factors are determined. . IAH Areas,of 100 -year shallow flooding, where - depths are btween one (1 )' and ',three (3) .feet; base flood elevations , are shown,: but no flood hazard factors are determined. :. Ai1-A30 Areas of 100 -year flood; base flood elevations '.and flood hazard factors determined. - A99 Areas of 100 -year- flood to ' be protected _-by . flood protection system under .construction; .:base --flood elevations and flood hazard .factors' not determined. B Areas between limits of -the -100-yea( flood and 500 - year flood; or certain 'areas'subject to 100 -year flood- ing with average depths less' than.one,(1,) foot or -where the contributing•drainage area is'les's'than one square mile; or areas protected by levees from the base flood. (Medium shading) C Areas of minimal flooding. (No shading) . D Areas of undetermined, but possible; flood 'hazards., V Areas of 100 -year coastal flood with velocity (wave action); base flood elevations and flood hazard factors not determined. - V1 -V30 Areas ;;of 100 -year coastal flood with velocity (wave action);'b_asefl.00d .elehazard vations and„flood factors_ determined.;.:,., .:W. i st �, a. -WT✓ 4l4 h • LL Y 1 -moi .i i ”' r^•R�i. ''1S . y k .riP�Y' �.. r 'a',_, Py v.,, x ..is'F ✓< n i�ha• - 4,""_", - rna+ pro�ec ec( byflood control structures "1- is reap is roe -flood instkrance purposes. only; it.does not neces- sa ily show all areas subject to flooding in the .commtir )ty cir all ZONE C planimetric features outside special flood hazard -areas. Fcr adjoining map .panels;:see separately printed Index 'To Map` Panels. INITIAL IDENTIFICATION: JULY 18, 1975 FLOOD HAZARD BOUNDARY MAP REVISIONS; FLOOD INSURANCE RATE MAP EFFECTIVE: DECEMBER 15, 1981 ' ' FLOOD INSURANCE RATE MAP REVISIONS: Rffer to the FLOOD INSURANCE RATE MAP -EFFECTIVE date shown on this map to determine when -'actuarial rates apply to stFuctures in the zones where elevations or depths have been estab= liked. Tp determine if flood insurance is available: in .this community, c< ntact your insurance agent, or call the National Flood Insurance P ogram, at (800) 638-6620. DESCRIPTION OF LOCATION RM2 RM1134.15 Chiseled "X on top. of, curb, ;west end, north side of entrance'to Randall Park";'=50;feet east of the centerline of South 48th Avenue; 540 ,feet south of the.`intersection with':Viola Street, Established by Tudor"EnineeringCompan APPROXIMATE SCALE 400 0 400 FEET o S 48TH AVENUE y � � NATIONAL FLOOD INSURANCE PROGRAM FLOOD INSURANCE RATE MAP. ZONE C CITY OF YAKIMA, WASHINGTON YAKIMA COUNTY ZONE B SOUTH =:':'`:'•44TH.'AVENUE SOUTH 44TH AVENUE PANEL 1 OF 6 (SEE MAP INDEX FOR PANELS NOT PRINTED) ZONEB ZONE B ZONE C' SOUTH _- �--AVENUE COMMUNITY -PANEL NUMBER ;gnmm :nnn1 e ���.�i�'i!����'ri��Id�Yh�.���5'{�,��ii��.! t..S.i,ytf• �i�41.Cn,N.���'.91��w�'J id�Ala'k.'w4dvt' .A. ,99 r 6TH AVENUE? Spring Creek 1 Tributary 1 KEY TO MAP SOO-Year Flood Boundary 100 -Year Flood Boundary Zone Designations* With Date of Identification ,g.; 12/2/74 100 -Year Flood Boundary .500 -Year Flood Boundary lase Flood Elevation Line' With Elevation In Feet** 513— 'Base Flood Elevation in Feet Where Uniform Within Zone** Elevation Reference Mark SOUTH 34TH ,AVENUE ZONE B.. SOUTH AVENUE River Mile (EL 987) RM7x o M1.5 *Referenced to the National Geodetic Vertical Datum of 1929 *EXPLANATION OF ZONE DESIGNATIONS ZONE A AO AH Al -A30 A99 8 EXPLANATION Areas of 100 -year, flood; base flood elevations and flood hazard Factors not determined. Areas of 100 year shallow nwh are between one (1) and three (3)floodiFeet;g averageere depths of inundation are shown, but no flood hazard factors are determined. Areas of 100 -year shallow flooding where depths are between one (1) and three (3) feet; base' flood elevations are shown,_ but no flood hazard factors are determined. Areas of. 100 -year flood; base flood elevations and flood hazard factors determined. Areas of 100 -year flood to be protected by flood protection system under construction; base flood elevations and flood hazard factors not determined. Areas between limits of the 100 -year Flood and 500 - year, flood; or certain areas subject to 100 -year flood- ing with average depths less than one (1) foot or where the contributing drainage area is less than one square mile`; ar areas protected by levees from the base flood. (Medium shading) C Areas of,minimal flooding. (No shading) D Areas of undetermined, but possible, flood ,hazards. V 'Areas --of 100 -year coastal flood with velocity (wave action); base flood elevations and flood hazard factors not determined. Areas of 100 -year coastal flood with velocity (wave action); base flood elevations and flood hazard factors determined, V1 -V30 -ZONE B NOTES TO 'USER ertain ares not in the special floocl hazard areas (zones A and V) r a be protected:b y la'o .c tro tr taps ` his rhap is for "'flood, insurance.. purposes Drily; it;does not neces sarily show all areas -'subject to flooding in .the 'community or II planimetric features outside special flood hazard areas. r.. For adjoining map - panels,:see separately "printed Index To Map IaneIs. irport Road INITIAL IDENTIFICATION: JULY 18, 1975 FLOOD HAZARD BOUNDARY MAP REVISIONS: ZONEC PI��M•mlrc �.vw •Nq'ne� FLOOD;INSURANCE RATE MAP EFFECTIVE: DECEMBER 15, 1981 F,,LOODLINSURANCE RATE MAP REVISIONS:' AVENUE CORPORATE LIMITS SOUTH AVENUE ZONE C ZONE B— LEVATION REFERENCE MARKS 'ELEVATION .' (FT, NGVD) DESCRIPTION OF LOCATION -'1059.06 'U.S.`,.Coast and Geodetic Survey brass cap stanped "Yakima A" located in the northwest corner of the Federal Aviation Adminis- tration Flight Control Tower at Yakima Municipal Airport; 60 feet south from:,the centerline of. West Washington Avenue, 660 Feet east of its:intersection with ;South 24th Avenue. ZONE C Defer to the FLOOD INSURANCE RATE MAP EFFECTIVE date shown on this map to determine when actuarial rates apply to , tructures in the zones where elevations or depths have been estab- ished. fo determine if:flood insurance is available in this community, contact your insurance agent, or call the National Flood Insurance rogram, at (800) 63$6620, SOUTH AVENUE YAKIMA MUNICIPAL AIRPORT APPROXIMATE SCALE 400 0 400 FEET (-SEEK SOUTH ZONE B i 'AVENUE SOUTH AVENUE _,.. •rsas,.,�mnrm^�«*.Fn;�z s��.n�ai"peYw"�;.'�.�,,��4en"��t'd��N:�.Y. NATIONAL FLOOD INSURANCE PROGRAM Fl M FLOOD INSURANCE RATE MAP Q,RPORATE LIMITS CITY OF YAKIMA, WASHINGTON YAKIMA COUNTY PANEL 3 OF 6 ;(SEE MAP INDEX FOR PANELS NOT PRINTED)) ZONE C SOUTH AVENUE ZONE C COMMUNITY -PANEL NUMBER 530311 0003 A 114-4,1"ilir,:!;Y! 0,i!!!'4.ta,Si AVilt0.1109.t09140.014,1010,101,4VM4144,1WA1K6h1WW:649,1%;"101401.4110.444,4010N4,01041.taka.9.4 •• • L...., k A k COIVIMUNITYPANEL NUMBER THIS AREA OF THE COMMUNITY SHOWN AS INSET A ON PANEL 530311 0006 ARE'AOF • • ! • ° - / • NATIONAL FLOOD INSURANCE PROGRAM - . . • • '7,, • FLO OD FLOOD BOUNDARY AND FLOODWAY MAP CITY OF YAKIMA, WASHINGTON YAKIMA COUNTY ..! MAP INDEX PANELS PRINTED: 1, 3,6 :°•••• • • . , COMMUNITY -PANEL NUMBERS 530311 nfintsinfiR i it i , A't 1� ll� 31 a;' 111e "i s .,Ih.. ,,., iE.u'i�dr�,'�+Ja°:ravAYlQaa{i.lkc•�t+�-'x' Gn 1' t 1 ii:.ln�•-"�i•:t',:�-v,�;�5�9ia't'i�,�!.t{v.,,,i. a�r�'��:'�?,� �i,��vu fV ,.., Ys�Pa�t�9�1�:•'� Pi104 rl 1(�r d %iti ttgenWOA 4]r. }�•�;�ce Yd'AiVi+e,, wrw. ry. ,,.,�,+f,�,�, F.... u•dFr_, •..., KEY TO MAP 500 -Year Flood Boundary 100 -Year Flood Boundary Zone Designations; JOINS PANEL 0705 ----- ---1_ 1Q0 -Year Flood Boundary 590 -Year Flood Boundary Base Flood Elevation Line With Elevation in Feet** Base Flood Elevation in Feet (EL 987) Where Uniform Within Zone** Elevation Reference Mark RM7x Zone D Boundary River Mile •M1.5 **Referenced to the National Geodetic Vertical Datum of 1929 REFERENCE MARK ELEVATION REFERENCE MARKS DESCRIPTION OF LOCATION •Washington :State Highway_ ?apartment brass cap stamped "39- 27", in, northwestbridge abutment, U.S. Highway 410, northbound lane over the Naches River. ' U.S. Coast:and Geodetic Su vey brass cap'stamped "F-294", be- tween northbound Iane,::U.S Highway .410 and the Burlington Northern Railroad tracks, 800feet south of Galloway Drive. U.S. Coast and Geodetic So veybrass cap ,starnped "0-294", lo- cated on north end of coricr to hoi culvert on Gleed Road, east of U.S. Highway, 410 and south .of Gleed approximately 1 mile. Chiseled "X" on top of.cun rete'driveway;,northwest corner, in front of Gleed Fire Departenertt. - • Chiseled "X" on top.of'old y(ashingtoriState Highway Department right-of-way marker Post.' Pojt is concrete; 4 -inch by 4 -inch and 2 feet high. • Located_between: Up. Highway 410 northbound lane and the Burlington Northern Railroad tracks,' midway between power poles'nurnbers 316803 and 31 804._' ELEVATION (FT. NGVD) 1182,62 1205.86 1231.34 1251.89 1268.32 ZONE EXPLANATION A Areas of 100 -year flood; base flood elevations . and flood hazard factors not determined. AO Areas of 100 -year shallow flooding where depths are between one (1) and three (3) feet; average depths of inundation are shown, but no flood hazard factors are determined. AH Areas of 100 -year shallow flooding where depths are between one (1) and three (3) feet; base flood elevations are shown, but no flood hazard factors are determined. Al -A30 Areas of 100 -year flood; base flood elevations and flood hazard factors determined. A99 Areas of 100 -year flood to be protected by flood protection system under construction; base flood elevations and flood hazard factors not determined, B Areas between limits of the 100 -year flood and 500 - year flood; orcertain areas subject to 100 -year flood- ing with average depths less than one (1) foot or where the contributing drainage area is less than one square mile; or areas protected by levees from the base flood. (Medium shading) C Areas of minimal flooding. (No shading) D Areas of undetermined, but possible, flood hazards. V Areas of 100 -year. coastal flood with velocity (wave action);'base flood elevations and flood hazard factors .' not determined. V1 -V30 Areas of. 100 -year coastal flood with velocity (wave action); base flood elevations and flood hazard factors determined. NOTES TO USER Certain areas not in the special flood hazard areas (zones Aancl:\/} may be protected by flood 'cgntrol structures. This map 'is for -flood .insu`rance'purposesonly; it does;. not'.neces:;. sarily show all areas subject to flooding in the community or. - all planimetric features outside special flood hazard areas. For adjoining map panels, see separately printed Index To Map Panels, ZONE C INITIAL IDENTIFICATION_ DECEMBER 27, 1974 FLOOD HAZARD BOUNDARY MAP REVISIONS: AUGUST 9, 1977 FLOOD INSURANCE RATE MAP EFFECTIVE: JUNE 5, 1985 ZONE B 3 1252 0. MAPLE. INA Y Refer to the FLOOD INSURANCE RATE MAP EFFECTIVE date shown on this map to determine when actuarial rates apply to structures in the zones where elevations or depths have been estab- Iished. To determine if flood insurance is available in this community, contact your insurance agent, or call the National ,Hood Insurance Program, at (800) 638-6620. ZONE C • (/ 17 APPROXIMATE SCALE IN FEET 1000 0 1000 111 NATIONAL FLOOD INSURANCE PROGRAM FIRM FLOOD INSURANCE RATE MAP YAKIMA COUNTY, WASHINGTON (UNINCORPORATED AREAS) PANEL 115 OF 2575 (SEE MAP INDEX FOR PANELS NOT PRINTED) COMMUNITY -PANEL NUMBER cln717n71! R gyp{yhM:R}j"a:,y.Y.^'d'.(:Y,7@JS1M'.LYY^da9P1WyYSd&^V'Rdµ'WuyRAt{q ANYaG:iWJ6MNPPd..Fr.G:u6+aEp44.K�i tMai.><.��4.�Y:.n"n9 d:�+� e KEYTO MAP; '.50 Year Flood Boundary-. .-. :...1d0 -Year Flood Boundary FLIOODWAY FRINGE 10? -Year Flood Boundary: 50,) -Year Flood Boundary , Crgss Section Lin FLOODWAY vation Reference Mark Ri%er Mile RM7 ?C • M1.5 NOTES TO USER Boundaries of the floodways were computed at cross sections and inllerpolated between cross.sections. The floodways were based on hydraulic considerations'_'with regard to requirements of the Fed/ eral Insurance Adrriinistration. Tllis map was prepared. to'su:pport•rninirnum flood plain manage-- m`(nt regulations; it rriay"not show all `areas subject to flooding in j the community,:ci`r all'`planimetric features outside special fl od hazard area Flgodway widths;_in'.sorne'areas are too narrow to show to scale. Rtifer to Floodway,,-Dat_a.,Table.where flood way width is shown at 1/20 inch. F r adjoining reap .panels;, -see 'separately printed Index To Map Poels. ELEVATION REFERENCE MARK REFERENCE ELEVATION MARK (FT. NGVD) DESCRIPTION OF LOCATION RM2 HM1134.15 Chiseled "X" on top of curb, west end, north side of enrrancerto Randall Park; 50 feet east of the centerline of South 4Sth''Avenue,'` 540 feet south of the intersection with Viola Street. Established by Tudor Engineering Company. ., .. APPROXIMATE SCALE 400 0 400 FEET S 48TH AVENUE NATIONAL FLOOD INSURANCE PROGRAM CORPORATELIMITS FLOODWAY FLOOD BOUNDARY AND FLOODWAY MAP 1 CITY OF YAKIMA, WASHINGTON YAKIMA COUNTY SOUTH 44TH AVENUE - 1 PANEL 1 OF 6 (SEE MAP INDEX FOR PANELS NOT PRINTED) FLOOD f V CONTAINED IN'OHANNEL z Q w 41ST SOU AVENUE COMMUNITY -PANEL NUMBER ;gnm nnni t'f ICI.INIMMEttltilej,11;02 • Vift,t1t KEY TO MAP 500 Year Flood,Boundary ,10O -Year Flood Boundary FLOODWAY FRINGE .L• 100 -Year Flood' Boundary ok00-Year Flood1Boundary Appxoximate .1100,7Year. Flood Boundary '.CrosS Section Line Elevation ReferenCe Mark, River Mile 0 RM7x • M1.5 NOTES TO USER Boundaries of the floodways were computed at cross sections and :interpolated bet,veen cross sections. The floodways were based on hydraulic considerations with regard to requirements of the Fecleral Insuran6e Administration. 1, Ilis map was prepared to suppOrf minimum flood .plain manage - rent regulations; it may not show all areas subject to flooding ‘in the community or all planimetric . features outside special flood hazard areas. Floodway widths in some areas are too narrow to show to scale. 7Refer to Floodway Data Table where floodway width is shown at /2ac01 adjoining For Map panels, see separately printed Index To Map • Panels. FLOODWAY CONTAINED IN CHANNEL .• . • South Access ,•-••,-:':ir.:,„; ELEVATION REFERENCE MARKS . - . . FERENC- ELEVATION l MARK .:j (FT. NGVD) DESCRIPTION OF LOCATION i RM1 : , 1059.56 U.S. Coast and Geodetic Survey brass cap stamped located in the northwest icorner Of the Feckl[al Aviation Adminis- -.: tration Flight Control Tower at Yakima Muillipal Airport; 60 feet south from the centerline of West Washineon Avenue, 660 feet ,•:: : ::.: , • ' e,aSt of its intersection with South 24th Aveniii• ' - - :,',:--:•.::: 1 :- - { - YAKIMA MUNICIPAL AIRPORT 400 APPROXIMATE SCALE 0 400 FEET 1 F SOUTH :IOT • ,AVENUE NATIONAL FLOOD INSURANCE PROGRAM FLOODWAY FLOOD BOUNDARY AND FLOODWAY MAP • cgilppr,i;,84E.1,,Tiiirs CITY OF YAKIMA, WASHINGTON YAKIMA COUNTY 35 (SEE WIAF-INOE5c FOR PANELS NOT PRINTED) • AVENUE • COMMUNITY -PANEL NUMBER 530311 0003 AMA rl9 ekXh:t146n au as °a511t A I'9P Jlrilwfi d'LMl ',LJ, 11,11ep, 11 uu'iu le ' ubd bC a •'. avno. e.�n KEY TO M A P NORThI AVENUE AVENUE 00 -Year Flood, Boundary 100 -Year Flood Boundary FLOODWAY FRINGE 00 -Year Flood, Boundary S00 -Year Flood Boundary 1\pproximate 100 -Year Flood Boundary Cross Section Line Elevation' Referl nce Mark River Mile FLOODWAY RM7X fM1.5 GORDON STREET CORPORATE LIMITS NORTH 1Sr STREET 4 4 co w w 2 0 2 1— w (1) 2 t NG AREA SHOWN NOTES TO USER Boundaries of t ie floodways were computed at cross sections.and interpolated between cross sections. The floodways were based on hydraulic cons•derations with regard to requirements of the rederal Insurance Adrninistration. This map was prepared to support minimum flood plain manage- went regulatior s; it may not show all areas subject to flooding n the community. or all planimetric- features outside special Mood hazard areas. Floodway widths in some areas are too narrow to show to scale, Refer to Floodway Data Table where floodway width is shown at 1 nch, or adjoining map parcels, see separately printed Index To Map Panels. 2 d { NORTH STREET frvm.��i„r;�d I„r•vsrv':x• n r!mJ'q+v'wr•':i'e"• •">,mMi?'.'r%�8'p.F vNa+i'�^'•y*w+a�ar. .nrrcilh^.m,+^�"ai•.n.afJrr4Ra,u+^e'+'N z......,.e,:baw.rtr n�•mPn^nvW,rariirD m,•."..j.++.'ui5riL•dlmnarvrmi,n¢..wNn.r�rv..s..— �9 wt'W'✓'r •'Nw.you.rn"r: f w,Vr¢,MWM wti 'rnM"HC',a'��°+.mr � nnwrrl;rvditi'nnYud. xrrY "�3'.aa •puna^v'R« :n.,,.n+1'&rviat,A.CY'^a• rtr.• s, u ronr „rY. ,,.5 w .wr m �,,,an,�•e,wux'4'� 'mw"'rr,,�n`w�„¢•^n>. �,r:'r+n'�,ia,em.a �' mm�'r �.✓Mra nniewFmlxer;''i' ^"'•b. w��p'i ra a �), iF8'��,h ,..? �P:sR•' n'�,drg `, APPROXIMATE SCALE 400 0 400 FEET arpsp:r.%wi.�.ar,.�.�r�;rr:'rnnr'm,R,•�. , •asa,.V. „�,� ;� ,6^ `e:kn.�?�''u�{":,ia,.r� •�r�.>ti x<':�eur;�- : � n.;�c-sC.i-r.ati,>,:�: lrctra'n�rndt,e,arS,,:!°x,,-�,e'xr.1'nn.4..e.: v+,rcwJ•Fr!"° i , . •,,;•f,�,sa�aar�s;wry..ravuhr:+rrd,•.q::.ur,:e«wra.�vl+dr� 741. ra•n,F.r6lw+F,.ary�,l�rnnh'l,,4 r,. r.4u.rn�i.,•.,p a�.; ,�'rm•'a•'r+wl+v,r�,rw�awur+a w+!'•ia,5h n'i� wm�ii�,.�;,•s"»'v�r4anwa •r••�'Y rna rra.a�t.:Frc,a� NATIONAL FLOOD INSURANCE :PROGRAM p .rcri eiP: .vfwah"':„✓ nr.QW:d:!2M.rfl�'W;f4• •.. �j'Fu,.dx',^%4�^p!u;.pata �,Y.i+.M'kF x'}d ii ��:r a:•K'^F'f+q'! Uptia�;�v.4.t"�'^fir': •ar,'Oria;t"oU:.a..::.,.✓urrr�: �sat,��r,4�{a�; FLOODWAY FLOOD:BOUNDARY AND FLOODWAY MAP: COI" PO ATE''LIMITS .L(JODWAY CITY OF YAKIMA, WASHINGTON YAKIMA COUNTY a ra.,ai:ar^kl�awar.«,.fir,: ..,�Yv,e',.•, 1 wear. S 11TH S•I RPOHATE'LIMITS PANEL 6 OF 6 (SEE MAP INDEX FOR PANELS NOT PRINTED) E SPRUCE ST YAKIMA ivaha.w;9sa. Ipt COMMUNITY -PANEL NUMBER 530311 0006 KEY TO MAP 500 -Year Flood Boundary 100 -Year Flood Boundary Zone Designations City of Yakima AREA NOT INCLUDED 10P -Year Flood Boundary 560 -Year Flood Boundary Bal,se Flood Elevation Line Wjth Elevation In Feet** 5 3 Bise Flood Elevation in Feet Where Uniform Within Zone** Elevation Reference Mark ZOne D Boundary River Mile (EL 987) RM7x •M1.5 *KReferenced to the National Geodetic Vertical Datum of 1929 EXPLANATION OF ZONE DESIGNATIONS ZONE EXPLANATION . A Areas of 100 -year flood; base flood elevations and flood hazard factors not determined. iAO Areas of 100 -year shallow flooding where depths are between one (1) and three (3) feet; average depths of inundation are shown, but no flood hazard factors are determined. AH Areas of 100 -year shallow flooding where depths are between one (1) and three (3) feet; base flood elevations are shown, but no flood hazard factors are determined. A1 -A30 Areas of 100 -year flood; base flood elevations and flood hazard factors determined. A99 Areas of 100 -year flood to be protected by flood protection system under construction; base flood elevations and flood hazard factors not determined. Areas between limits of the 100 -year flood and 500 - year flood; or certain areas subject to 100 -year flood- ing with average depths less than one (1) foot or where the contributing drainage area is less than one square mile; or areas protected by levees from the base flood. (Medium shading) C Areas of minimal flooding. (No shading) butpossible, flood hazards. V - Areas of 100 -year coastal flood with velocity (wave action); base flood elevations and flood hazard factors not determined. :.:BOULEVARD ...011111111}44M1111111111111.11111 t,10,441.. - kaia • • va:2,7;) 111.", • V1 -V30 Areas of 100 -year coastal flood with velocity (wave action); base flood elevations and llOod hazard, factors determined. NOTES TO USER cf,rtalp;"arre-aS:.00t--j02thp spciaI flood hazard areas (zones A and \) = miay be protected 1-:;/.flciciCI control s-tradture'S-47:-'-', Tiis map is for flood insurance purposes s4"rily show all areas subject to flooding in the community or all planimetric features outside special flood hazard areas. For adjoining map panels, see separately printed Index To Map Panels. INITIAL IDENTIFICATION: DECEMBER 27, 1974 FLOOD HAZARD BOUNDARY MAP REVISIONS: AUGUST 9, 1977 FLOOD INSURANCE RATE MAP EFFECTIVE: JUNE 5,1985 sy J z a. z 0 Refer to the FLOOD INSURANCE RATE MAP EFFECTIVE date shown on this map to determine when actuarial rates apply to structures in the zones where elevations or depths have been estab- I fshed To determine if flood insurance is available in this community, cpntact your insurance agent, or call the National Flood Insurance Program, at (800) 638-6620. ELEVATION REFERENCE MARKS 1 2 OP APPROXIMATE SCALE IN FEET 500 0 500 11 „.. . • AIMOMMIlik7",,7 • IIINATIONAL FLOOD INSURANCE PROGRAM •FIRM FLOOD INSURANCE RATE MAP YAKIMA COUNTY, WASHINGTON (UNINCORPORATED AREAS) PANEL 1028 OF 2575 (SEE MAP INDEX FOR PANELS NOT PRINTED) COMMUNITY -PANEL NUMBER 530217 1028 B 11311 f � d r �.f :ry a:';, la•r,.�.,u>id.�.�,',"nm�,9�A'.6&.u�d3,�1:,4..1'.ik,'.''r�L�"., •t,(d''"Y,1�`st4,�„r; gin, n,, dw #a ! y ii ICY• : o , .v A .r . KEY TO MAP 500 -Year Flood Boundary 100 -Year Flood Boundary Zone Designations JOINS PANEL 1030 100 -Year Flood Boundary 1 500 -Year Flood Boundary Base Flood Elevation Lirie With Elevation in Feet** ------ -- 513 Base Flood Elevation in Feet Where Uniform Within Zone** Elevation Reference Mark Zone D Boundary River Mile **Referenced to the National Geodetic Vertical Datum of 1929 (EL 987) RM7x •M1.5 EXPLANATION OF ZONE DESIGNATIONS ZONE EXPLANATION A Areas of 100 -year flood; base flood elevations and flood hazard factors not determined. AO Areas of •100 -year shallow flooding where depths are between one (1) and three (3) feet; average depths of inundation are shown, but no flood hazard factors are determined. AH Areas of 100 -year shallow flooding where depths are between one (1) and three (3) feet; base flood elevations are shown, but no flood hazard factors are determined. Al -A30 Areas of 100 -year flood; base flood elevations and flood hazard factors determined. 1A99 Areas of 100 -year flood to be protected by flood _ protection system under construction; base flood elevations and flood hazard factors not determined. Areas between limits of the 100 -year flood and 500 - year flood; or certain areas subject to 100 -year flood- ing with average depths less than one (1) foot or where the contributing drainage area is less than one square mile; or areas protected by levees from the base flood. (Medium shading) C Areas of minimal flooding. (No shading) II II 11 11 11 11 D Areas of undetermined, but possible, flood hazards. V Areas of 100 -year coastal flood with velocity (wave action); base flood elevations and flood hazard factors not determined. V1 -V30 Areas of 100 -year coastal flood with velocity, (wave action); base flood elevations and flood hazard factors determined. :NOTES ` 0 .USER Ce"r'tain.areas,not'in.,the:spcifl°od haad,� niay-beprotected iby'?flood ` ntrol structures -fhis map is for 'flood .insurance°`pu,rposes"on•ly; it does not neces- sadly show all areas subject to flooding in the 'community'or.' ail planimetric features outside special flood hazard areas. For adjoining map panels, see separately printed index To Map. Panels. 112: 1126 ZONE A3 INITIAL IDENTIFICATION: DECEMBER 27, 1974 FLOOD HAZARD BOUNDARY MAP REVISIONS: AUGUST 9, 1977 ZONE FLOOD INSURANCE RATE MAP EFFECTIVE: JUNE 5, 1985 Wide hrozzo 1104. 1106 Q J Id z Q a. 1n z 0 Refer to the FLOOD INSURANCE RATE MAP EFFECTIVE date shown on this map to determine when actuarial rates ,apply to structures in the zones where elevations or depths have been estab- lished. To determine if flood insurance is available in this community, contact your insurance agent, or call the National Flood Insurance Program, at (800) 638-6620. . .. - City of Yakima AREA NOT INCLUDED APPROXIMATE SCALE IN FEET 500 0 500 - - l ZONE AZ 1098 NATIONAL FLOOD INSURANCE PROGRAM WEST WASI-IiNGTO E ..-..- ...,. :.. AVENUE ZONE C FIRM` FLOOD INSURANCE :RATE MAP YAKIMA COUNTY, WASHINGTON (UNINCORPORATED AREAS) REFERENCE -ELEVATION 1 MARK : ';(FT'_NGVD) ` DESCRIPTION _OF LOCATION RM4BI`9'128.05 • Spike on 'east side' of. l''.E.'`:and L., `pole number 332403, 1.5 feet above ground, ';70 feet southwest "of, intersection- cif' West Washing- ton: Avenueacid South 52n.d Aveinue. ' % ' RM50 1159.0.1 - Chiseled "X" -on' top,. of.east side rail, north -end of rail at crossing for private drive;`' west; side=ofSouth 64th , Avenue and approxi- mately 2000 feet south Of West- Washington A'venuo. PANEL 1029 OF 2575 (SEE MAP INDEX FOR PANELS NOT PRINTED) T. 13 N. M T. 12 N. COMMUNITY -PANEL NUMBER 530217 1029 B ,t44:1:QAA-14,44 ,3311 431, JOINS PANEL 0715 BURLINGTON NORTHERN ZONE C 15 ZONE C • • 1 1 1U 1 • KEY TO MAP 500 -Year Flood Boundary 100 -Year Flood Boundary Zone Designations' 100 -Year Flood Boundary 500 -Year Flood Boundary Base Flood Elevation Line With Elevation In Feet** Base Flood Elevation in Feet Where Uniform Within Zone** Elevation Reference Mark Zone D Boundary River Mile - 5 1 3 (EL 987) RM7x. •M1.5 **Referenced to the National Geodetic Vertical Datum of 1929 EXPLANATION OF ZONE DESIGNATIONS ZONE - A IAO AH EXPLANATION Areas of 100 -year flood; base flood elevations and flood hazard factors not determined. Areas of 100 -year shallow flooding where depths are between one (1) and three (3) feet; average depths of inundation are shown, but no flood hazard factors are determined. 7 • Areas of 100 -year shallow flooding where depths are between one (1) and three (3) feet; base flood elevations are shown, but no flood hazard factors are determined. Al -A30 Areas of 100 -year flood; base flood elevations and, A99 B flood hazard factors determined. Areas of 100 -year flood to be protected by flood protection system under construction; base flood elevations and flood hazard factors not determined. Areas between limits of the 100 -year flood_and 5 00- • year flood; or certain areas subject to 100 -year flood- ing with average depths less than one (1) foot or where' the contributing drainage area is less than one square mile; or areas protected by levees from the base flood. (Medium shading) C Areas of minimal flooding. (No shading) Areas of undetermined, but possible, flood hazards. V Areas of 100 -year coastal flood with velocity (Wave action); base flood elevations and flood hazard factors not determined. V1 -V30 Areas of 100 -year coastal flood with velocity (wave action); base flood elevations and flood hazard factors determined: • Yakimd REA NOT lf\ICLUDED .. - - . - - --L- • • • 1 LEVATION REFERENCE MARKS REFERENCE MARK F0161* vIOD „,. DESCRIPTION OF LOCATION 1134.15 : thjseled "X'1 on top of curb, west end, north ide, of entrance to - Randall Park ori South 48h Avenue. _ Certainareas:pcit in the special flood114Zard#24sJzOneS:'Arid,V, nr-ty 6e protected by I flood :-C-6iffi-o I 'Sfiiairr-e-s1,7'2_;', This map is for flood insurance PurPOseS-cbt-ily;it'dbeS not neces- sarily show all areas subject to flooding in the 6ornfnunity ;of - al planimetric features outside special flood hazard areas. FOr adjoining map panels, see separately printed Index To Map . ' Panels. INITIAL IDENTIFICATION: DECEMBER 27, 1974 FLOOD HAZARD BOUNDARY MAP REVISIONS: AUGUST 9, 1977 FLOOD INSURANCE RATE MAI' EFFECTIVE: JUNE 5, 1985 Rlefer to the FLOOD INSURANCE RATE MAP EFFECTIVE date shown on this map to determine when actuarial rates apply to structures in the zones where elevations or depths have been estab- lihed. T'o determine if flood insurance is available in this community, contact your insurance agent, or call the National Flood Insurance Pogram, at (800) 638-6620. ' • , APPROXIMATE SCALE IN FEET 1000 0 1000 • , - • , • • .,• • 6" 0 EL 1028 NATIONAL FLOOD INSURANCE PROGRAM FIRM FLOOD INSURANCE RATEMAP YAKIMA COUNTY, WASHINGTON (UNINCORPORATED AREAS) PANEL 1030 OF 2575 (SEE MAP INDEX FOR PANELS NOT PRINTED) COMMUNITY -PANEL NUMBER S111917 inln g KEY• TO MAP 500 -Year Flood Boundary 100 -Year Flood Boundary Zone Designations JOINS PANEL 1035 ELEVATION REFERENCE MARKS REFERENCE ELEVATION MARK (FT. NGVD) RM46* 1059.56 DESCRIPTION 9F LOCATION U.S. Coast and Geodetic Survey brass cap stamped "Yakima A", located in the northwest corner of the Federal Aviation Adminis- tration Flight Control Tower at Yakima Airport. *LOCATED IN AREA NOT INCLUDED City of Yakima AREA NOT INCLUDED _ • - : - • • 26 100 -Year Flood Boundary 500 -Year Flood Boundary Base Flood Elevation Line With Elevation In Feet** Btse Flood Elevation in Feet Where Uniform Within Zone** Elevation Reference Mark Zone D Boundary River Mile (EL 987) RM7x •M1.5 **Referenced to the National Geodetic Vertical Datum of 1929 EXPLANATION OF ZONE DESIGNATIONS - ZONE A • EXPLANATION Areas of 100 -year flood; base flood elevations and flood hazard factors not determined. AO Areas of 100 -year shallow flooding where depths are between -one (1) and three (3) feet; average depths of inundation are shown, but no flood hazard factors are determined. ;ek1-1 Areas of 100 year shallow flooding Where, depths, are between one (1) and three (3) feet; base flood elevations are shown, but no flood hazard factors are determined. /41-A30 Areas of 100 -year flood; base flood elevations and flood hazard factors determined. A99 Areas of 100 -year flood to be protected by flood protection system under construction; base flood elevations and flood hazard factors not determined. Areas between limits of the 100 -year flood and 500 - year flood; or certain areas subject to 100 -year flood- ing with average depths less than one (1) foot or where the contributing drainage area is less than one square mile; or areas protected by levees from the base flood. (Medium shading) Areas of minimal fldOding. (No , B Areas of undetermined, but possible, flood hazards. Areas of 100 -year coastal flood with velocity (wave action); base flood elevations and flood hazard factors not determined. V1 -V30 Areas of 100 -year coastal flood with velocity (wave action); base flood elevations and flood hazard factors deterrnined. - , - NOTES TO USER •-• Cftain afea-§TrOt,in ttie_special flood hazard ateas.(zones ard : • ; • may be protected by flood control "FEW map is for flood insurance purposes Only; it does not rteceS- _ sarily show all areas subject to flooding in the communityor . all planimetric features 'outside special flood hazard areas. For adjoining map panels, see separately printed Index To Map Panels. 441.414m ANKOMNIV 35 NEB ZONE A4 1077 • INITIAL IDENTIFICATION: • DECEMBER 27, 1974 , FLOOD HAZARD BOUNDARY MAP REVISIONS: AUGUST 9, 1977 FLOOD INSURANCE RATE MAP EFFECTIVE: JUNE 5, 1985 Refer to the FLOOD INSURANCE RATE MAP EFFECTIVE date shown on this map to determine when actuarial rates apply to structures in the zones where elevations or depths have been estab- Iished. To determine if •flood insurance is available in this community, contact your insurance agent, or call the National Flood Insurance P:rogram, at (800) 638-6620. APPROXIMATE SCALE IN FEET 500 0 500 • , . . ..................................... '` -" `, - • - 1098 ZONEt City of Yakima AREA NOT INCLUDED ZONE B pring reek 1 Tributary 1 ZONE' C 34 .r. T. 13 N. 1— 1) M t.: ZONE C 4, ; 500 YEAR FLOOD CONTAINED\ 35 YAKIMA COUNTY, WASHINGTON (UNINCORPORATED AREAS) PANEL 1033 OF 2575 (BEE MAP INDEX FOR PANELS NOT PRINTED) COMMUNITY -PANEL NUMBER conovi Ingo D a;�ynJ;ve0A0sh';,*WOIWI;1d,:IA10,WkE3y'dy' 44. ‘1t tf KEY TO MAP 500 -Year Flood Boundary 100 -Year Flood Boundary Zone Designations - JOINS PANEL 1035 REFERENCE MARK RM43 ELEVATION (FT. NGVD) 1029.90 ELEVATION REFERENCE MAIiKS DESCRIPTION OF LOCATION Nail in top of curb, in middlq of curb radius, northeast corner of South 10th Avenue and Pionel Street. 1035.83 Chiseled "X" on northeast corner of concrete sidewalk, 48 feet northeast of intersection of ;South 10th Avenue and Whatcom 100 -Year Flood Boundary 500 -Year Flood.Boundary Base Flood Elevation Lire With Elevation In Feet** 513 - Base Flood Elevation in Feet Where Uniform Within Zone** (EL 987) Elevation Reference Mark RM7X Zone D Boundary River Mile •M1.5 *i'Referenced to the National Geodetic Vertical Datum of 1929 EXPLANATION OF ZONE DESIGNATIONS ZONE EXPLANATION Areas of 100 -year flood; base flood elevations and flood hazard factors not determined. AO Areas of 100 -year shallow flooding where depths are between one (1) and three (3) feet; average depths of inundation are shown, but no flood hazard factors -- are determined. AH Areas of 100 -year shallow flooding where depths are between one (1) and three (3) feet; base flood elevations are shown, but no flood hazard factors are determined. Al -A30 Areas of 100 -year flood; base flood elevations and City of Yakima AREA NOT INCLUDED flood hazard factors determined. A99 Areas of 100 -year flood to be protected. by .flood protection system under construction; base .flood elevations and flood hazard factors not determined. B Areas between limits of the 100 -year flood and 500 - year flood; or certain areas subject to 100 -year flood,- ing with average depths less than one (1) foot or where the contributing drainage area is Tess than one square mile; or areas protected by levees from the base. flood. (Medium shading) Areas of minimal flooding. (No shading) D Areas of undetermined., but possible, flood hazards. V Areas of 100 -year coastal flood with velocity (wave action); base flood elevations and flood hazard factors not determined. V7 -V30 Areas of 100 -year coastal flood with velocity (wave action); base floodelevations and flood hazard factors determined. Certain, areas- jot, i ,th _ speeial ; t od hazard areas, may be protectedky'flood'control strctures;=3>''=` This map is for flood insurance purposes`orily; it does not`neces sarily show all areas subject to flooding in the community or all planimetric features outside special flood hazard areas. For adjoining map panels, see separately printed Index To Map Panels. INITIAL IDENTIFICATION: DECEMBER 27, 1974 FLOOD HAZARD BOUNDARY MAP REVISIONS: AUGUST 9, 1977 FLOOD INSURANCE RATE MAP EFFECTIVE: JUNE 5, 1985 u, O ZONE C ZONE C Refer to the FLOOD INSURANCE RATE MAP EFFECTIVE date shown on this map to determine when actuarial rates apply to structures in the zones where elevations or depths have been estab- lished. To determine if flood insurance is available in this community, contact your insurance agent, or call the National Flood Insurance Program, at (800) 638-6620. APPROXIMATE SCALE IN FEET 500 0 500 °G'ityot=XakttTi •AREA -NOT INCLUDED City of Yakima AREA NOT INCLUDED RM44 x 1027 ZONE B < ZONE B ZONE A4 Bachelor Creek ZONE:I ZON E f T. 13 N. T A A .IF 1 111 NATIONAL FLOOD INSURANCE PROGRAM FIRM FLOOD INSURANCE RATE MAP YAKIMA COUNTY, WASHINGTON (UNINCORPORATED AREAS) PANEL 1034 OF 2515 (SEE MAP INDEX FOR PANELS NOT PRINTED) COMMUNITY -PANEL NUMBER 5111?17 11114 R rr liLiaf'�I,1'��.rri�ibai n IM i.„!�`YA. H. WeiiaY PnAG1:1.1�tt.M al'ry . � i KEY TO MAP ZONEC 500 -Year Flood Boundary 100 -Year Flood Boundary Zone Designations iw �,:.uL+ �rAaryw: JOINS PANEL 0720 ZONE C 100 -Year Flood Boundary 500 -Year Flood Boundary Base Flood Elevation Lire With Elevation In Feet** Base Flood Elevation in Feet Where Uniform Within Zone** (EL 987) Elevation Reference Mark RM7X Zone D Boundary River Mile •M1.5 **Referenced to the National Geodetic Vertical Datum of 1929 City of Yakima AREA NOT INCLUDED EXPLANATION OF ZONE DESIGNATIONS ZONE EXPLANATION BUR INGTON NORT HERN A Areas of 100 -year flood; base flood elevations and flood hazard factors not determined. AO Areas of 100 -year shallow flooding where depths are between one (1) and three (3) feet; average depths of•inundation are shown, but no flood hazard factors are determined. AH Areas of 100 -year shallow flooding where depths are between one (1) and three (3) feet; base flood elevations are shown, but no flood hazard factors are determined. Al -A30 Areas of 100 -year flood; base flood elevations and flood hazard factors determined. A99 Areas of 100 -year flood to be protected by flood protection system under construction; base flood elevations and flood hazard factors not determined. B Areas between limits of the 100 -year flood and 500 - year flood; or certain areas subject to 100-yearflood- ing with average depths less than one (1) foot or where the contributing drainage area is less than one square mile; or areas protected by levees from the base flood. (Medium shading) C Areas of minimal flooding. (No shading) D Areas of undetermined, but possible, flood hazards. V Areas of 100 -year coastal flood with velocity (wave action); base flood elevations and flood hazard factors not determined. V1 -V30 Areas of 100 -year coastal flood with velocity (wave action); base flood elevations and flood hazard factors determined. NOTES TO USER Certain as i& ii the;special'•�floodiiazard areas,(zones maybeprotected.b` flood control structural:"mss' y This map is':for;flood insurance purposes only; it does not"rieces sa"rily show all areas subject to flooding in the community.:or: all planimetric features outside special flood hazard areas. For adjoining map panels, see separately printed Index To Map Panels. INITIAL IDENTIFICATION: DECEMBER 27, 1974 FLOOD HAZARD BOUNDARY MAP REVISIONS: AUGUST 9, 1977 FLOOD INSURANCE RATE MAP EFFECTIVE: JUNE 5, 1985 Refer to the FLOOD INSURANCE RATE MAP EFFECTIVE date shown on this map to determine when actuarial rates apply to structures in the zones where elevations or depths have been estab- lished. To determine if flood insurance is available in this community, contact your insurance agent, or call the National Flood Insurance Program, at (800) 638-6620. 033 PANEL 1034 1000 APPROXIMATE SCALE IN FEET 0 1000 1110 NATIONAL FLOOD INSURANCE PROGRAM. FIRM FLOOD INSURANCE RATE MAP YAKIMA COUNTY, WASHINGTON (UNINCORPORATED AREAS) PANEL 1035 OF 2515 (SEE MAP INDEX FOR PANELS NOT PRINTED) COMMUNITY -PANEL NUMBER 530211 1035 B POSOKI444.431* Ve0A-M 444V lq,11,A 4,4, • • , ,, .1,, 1, • KEY TO MAP 500 -Year Flood Boundary 100 -Year Flood Boundary ZOne Designations. 100 -Year Flood Boundary 500 -Year Flood Boundary Base Flood Elevation Line With Elevation In Feet** '4k:,t't;if,r ipfict 13, *-*I" ',I,7;1,444,44.11>4e VTP.-tti" • I.41.11.114.444itilt 4401%. . ..,11,11,01X....461140,86AllttAIMIN1420*140..4144114.064.1( sOo *I11-1fr'" ZONE I3 1098 i4".• *=:* '.* Base Flood Elevation in Feet Where Uniform Within Zone** Elevation Reference Mark Zone D Boundary River Mile * Referenced to the National Geodetic Vertical Datum of 1929 (EL 987) RM7X •M1.5 EXPLANATION OF ZONE DESIGNATIONS 2ONE EXPLANATION A Areas of 100 -year flood; base flood elevations and flood hazard factors not determined. AO Areas of 100 -year shallow flooding where depths are between one (1) and three (3) feet; average depths of inundation are shown, but no flood hazard factors are determined. AH Areas of 100 -year shallow flooding where depths are between one (1) and three (3) feet; base flood elevations are shown, but no flood, hazard factOrs are determined. Al -A30 Areas of 100 -year flood; base flood elevations and flood hazard factors determined. A99 Areas of 100 -year flood to be protected by flood protection system under construction; base flood elevations and flood hazard factors not determined. B Areas between limits of the 100 -year flood and 500 - year flood; or certain areas subject to 100 -year flood- ing with average depths less than one (1) foot or where the contributing drainage area is less than one square mile; or areas protected by levees from the base flood. (Medium shading) C Areas of minimal flooding. (No shading) D Areas of Lindetermined, but possible, flood hazards. ✓ Areas of 100 -year coastal flood with velocity (wave action); base flood elevations and flood hazard factors not determined. V1 -V30 Areas of 100 -year coastal flood with velocity (wave action); base flood elevations and flood hazard factors determined. YAKIMA INDIAN RESERVATION BOUNDARY COINCIDENT WITH DRAINAGE McCU LLaUGH 3 akima Indian Reservation AREA NOT INCLUDED • • - • 3 . , • .:El..EVATION REFERENCE MARKS REFERENCE ..:ELEVATION MARK' NGVD) , • RM47 11099.45 DESCRIPTION or LOCATION Nail in power pole, 0.75 feet abov9 ground, pole number 035502, at intersection of 34th Avenue and Ahtanum Road in the south- east corner. NOTES TO USER C4tairi areas not irilthelSOe_Cial flood hazard V) May be protected by flood -control structures. - -.„ This map is for flood insurance purposes only; it does not neces- sarily show all areas subject to flooding in the . community or apllanpellasn.imetric features outside special flood hazard areas. For adjoining map panels, see separately printed Index -1-o Map 1 INITIAL IDENTIFICATION: DECEMBER 27, 1974 FLOOD HAZARD BOUNDARY MAP REVISIONS: AUGUST 9, 1977 FLOOD INSURANCE RATE MAP EFFECTIVE: JUNE 5, 1985 Refer to the FLOOD INSURANCE RATE MAP EFFECTIVE date shown on this map to determine when actuarial rates apply to structures in the zones where elevations or depths have been estab- lished. To determine if flood insurance is available in this community, contact your insurance agent, or call the National Flood Insurance Program, at (800) 638-6620. APPROXIMATE SCALE IN FEET 500 0 500 NATIONAL FLOOD INSURANCE PROGRAM FIRM FLOOD INSURANCE RATE MA YAKIMA COUNTY, WASHINGTON (UNINCORPORATED AREAS) .,. . • ' - „ • _ •.„ , • r „ „ • , ,r ' • ' FANO.:1041 OF2575 MAP INDEX FOR PANELS NOT PRINTED) • COMMUNITY -PANEL NUMBER cnnni, 1AA1 n $,,� In 4 414 6, I .r 5,?,dvr r1tiR.�ie ^ 1�L:r:: �wV'?Ij1j •d �: v a.At'�i,�>):lii'����+���1'.'Ir.f� h�.��r1d.}6•��,ti�:a'�?d.Yk�1t'�%'�ww,�ld': NSI"1�'N11 ', KEY TO MAP 500 -Year Flood Boundary 100 -Year Flood Boundary Zone Designations JOINS PANEL 0710 100 -Year Flood Boundary 500 -Year Flood Boundary Base Flood Elevation Lire With Elevation In Feet** Base Flood Elevation in Feet Where Uniform Within Zone** Elevation Reference Mark RM7X (EL 987) Zone D Boundary River Mile **Referenced to the National Geodetic Vertical Datum of '1929 f::•EXPLANATION OF ZONE DESIGNATIONS,:;'', ZONE EXPLANATION " A Areas of 100 -year flood; base flood elevations and flood hazard factors not determined. •M1.5. • a.:AO Areas of 100 -year shallow flooding • where,depths are between one (1) and three (3) feet; average'depths of inundation are shown, but no flood hazard factors are determined. Areas of 100 -year shallow flooding where depths are between one (1) and three (3) feet; base flood,' elevations are shown, but no flood hazard factors are determined. 1-A30 Areas of 100 -year flood; base flood elevations 'an flood hazard factors determined. `A99 Areas of 100 -year flood to be protected by flood protection system under construction; base flood elevations and flood hazard factors not determined. Areas between limits of the 100 -year flood. and 500 - year flood; or certain areas subject to 100 -year flood- ing with average depths Tess than one (1) foot or where the contributing drainage area is less than one square mile; or areas protected by levees from the base flood. (Medium shading) Areas of minimal flooding. (No shading) Areas of undetermined, but possible, flood hazards. Areas of 100 -year coastal flood with velocity „(wage action); base flood elevations and flood hazard factors not determined. Areas of 100 -year coastal flood with velocity (wave action); base flood elevations and flood hazard factors determined. V1 -V30 NOTES TO USER Cer n areaas::not.`n the special flood:hazarii.,areas (Loner A and V • niay be protected by -flood -control str c ear.. This map is for flood'.insurancepurposes only; it does not`neces' sarily show all areas subject to flooding in the community or all planimetric features outside special flood hazard areas. For adjoining map panels, see separately printed Index To Map Panels. EFERENCE ''' 'ELEI(ATION MARK';',;`` ::'' (FT, NGVD) DESCRIPTION OF LOCATION `,RM32, -• ..1104,53 'Washington State Highway Department brass cap number 39-83, - located ,on, southwest corner of bridge over Yakinna. River, on the Selah overpass, approximately 1500 feet west of Interstate Highway 1114.77', Washington'`State_:•Highway Department brass cap ;number 39-85, located ori:.northwest corner of the overpass at mast Selah .. exit on the northbound lane of Interstate Highway $Z.. Town of Selah AREA NOT INCLUDED INITIAL IDENTIFICATION: DECEMBER 27, 1974 FLOOD HAZARD BOUNDARY MAP REVISIONS: AUGUST 9, 1977 FLOOD INSURANCE RATE MAP EFFECTIVE: JUNE 5, 1985 kefer to the FLOOD INSURANCE RATE MAP EFFECTIVE date sown on this map to determine when actuarial rates apply to structures in the zones where elevations or depths have been estab- lished. To determine if flood insurance is available in this community, contact your insurance agent, or call the National Flood Insurance F rograrn, at (800) 638-6620. 1096 ZONE A8 APPROXIMATE SCALE IN FEET 1000 0 1000 FASSET AVENU 1089 ZONE ` $ ZONE B ZONE B ZONE C a 1086 PROF I LE..BASE LINE BURLINGTON NORTHERN ( 1 1 079 " 1078• 1080 1077 ZONE 1075 LIMIT OF DETAILED STUDY ZONE A7 Of Y kim ity o a 1 ZONE A NATIONAL FLOOD INSURANCE PROGRAM FIRM FLOOD INSURANCE RATE YAKIMA COUNTY,' WASHINGTON (UNINCORPORATED AREAS) PANEL 720 OF 2515 (SEE MAP INDEX FOR PANELS NOT PRINTED! COMMUNITY -PANEL NUMBER i/n917 n79n R