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
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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.
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'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
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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
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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
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(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
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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
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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-
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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
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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:
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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
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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
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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-
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l..
LL.
0
0 >.,
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F-
5
J
Z
.F'
r �
'
f
m
113.00
13.20
113.40
113.60
13.80
114.00
114.20
STREAM DISTANCE IN MILES ABOVE MOUTH
114.40
114.60
114.80
LEGEND
500 -YEAR FLOOD
100 -YEAR FLOOD
50 -YEAR FLOOD.
10 -YEAR FLOOD
STREAMBED
CROSS SECTION
LOCATION
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411111•11M
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114.80
115.00.
•
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115.20
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115.40 115.60
1
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115.80
STREAM DISTANCE IN MILES ABOVE MOUTH
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116.00
116.20
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116.40
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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