Federal Emergency Management Agencygustfront.ccrfcd.org/pdf_arch1/Lomr/11-09-4118P.pdf · cc: Mr. Kevin Eubanks Mr. Jarah Parke, P.E. Assistant General Manager Project Engineer Clark

Federal Emergency Management Agency Washington, D.C. 20472

CERTIFIED MAIL RETURN RECEIPT REQUESTED

The Honorable Susan Brager Chair, Clark County Board of Commissioners 500 South Grand Central Parkway Las Vegas, NV 89155

IN REPLY REFER TO: Case No.: 11-09-4118P Follows Conditional Case No.: 06-09-BF52R Community Name: Clark County, NV Community No.: 320003 Effective Date of

This Revision:

Dear Ms. Brager: The Flood Insurance Study report and Flood Insurance Rate Map for your community have been revised by this Letter of Map Revision (LOMR). Please use the enclosed annotated map panel(s) revised by this LOMR for floodplain management purposes and for all flood insurance policies and renewals issued in your community. Additional documents are enclosed which provide information regarding this LOMR. Please see the List of Enclosures below to determine which documents are included. Other attachments specific to this request may be included as referenced in the Determination Document. If you have any questions regarding floodplain management regulations for your community or the National Flood Insurance Program (NFIP) in general, please contact the Consultation Coordination Officer for your community. If you have any technical questions regarding this LOMR, please contact the Director, Mitigation Division of the Department of Homeland Security’s Federal Emergency Management Agency (FEMA) in Oakland, California, at (510) 627-7175, or the FEMA Map Information eXchange (FMIX) toll free at 1-877-336-2627 (1-877-FEMA MAP). Additional information about the NFIP is available on our website at http://www.fema.gov/nfip. Sincerely, Siamak Esfandiary, Ph.D., P.E., Program Specialist For: Luis Rodriguez, P.E., Chief Engineering Management Branch Federal Insurance and Mitigation Administration

Engineering Management Branch Federal Insurance and Mitigation Administration

List of Enclosures: Letter of Map Revision Determination Document Annotated Flood Insurance Rate Map Annotated Flood Insurance Study Report

cc: Mr. Kevin Eubanks Mr. Jarah Parke, P.E. Assistant General Manager Project Engineer Clark County Regional Flood Control District MWH Global, Inc. Mr. W. Layne Weber Principal Engineer

Clark County

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http://gustfront.ccrfcd.org/pdf_arch1/Lomr/CLOMR/06-09-BF52R.pdf

Case No.: Page 1 of 5 Effective Date: December 3, 2012 Issue Date: July 17, 2012 LOMR-APP

11-09-4118P

Washington, D.C. 20472

Federal Emergency Management Agency

LETTER OF MAP REVISION DETERMINATION DOCUMENT

COMMUNITY AND REVISION INFORMATION PROJECT DESCRIPTION

COMMUNITY

APPROXIMATE LATITUDE & LONGITUDE: 36.047, -115.172SOURCE: USGS QUADRANGLE DATUM: NAD 83

Clark County Nevada

(Unincorporated Areas)

COMMUNITY NO.: 320003

BASIS OF REQUEST

IDENTIFIER

DETENTION BASIN NEW TOPOGRAPHIC DATAHYDRAULIC ANALYSIS HYDROLOGIC ANALYSIS

Lower Blue Diamond Detention Basin

ANNOTATED MAPPING ENCLOSURES ANNOTATED STUDY ENCLOSURES

DATE: November 16, 2011 NO.: 32003C2562E TYPE: FIRM*



DATE OF EFFECTIVE FLOOD INSURANCE STUDY: November 16, 2011

PROFILE(S): 01P,02P,07P-09P(a)

FLOODWAY DATA TABLE: 5

SUMMARY OF DISCHARGES TABLE: 3

STILLWATER ELEVATION TABLE: 10

Enclosures reflect changes to flooding sources affected by this revision. * FIRM - Flood Insurance Rate Map; ** FBFM - Flood Boundary and Floodway Map; *** FHBM - Flood Hazard Boundary Map

FLOODING SOURCE(S) & REVISED REACH(ES) See Page 2 for Additional Flooding Sources

Blue Diamond Wash North Branch - from just upstream of the confluence with Duck Creek to just downstream of the Union Pacific Railroad

SUMMARY OF REVISIONS

Revised Flooding Effective Flooding Flooding Source Increases Decreases

Blue Diamond Wash North Branch Floodway Floodway YES YES

BFEs* BFEs YES YES

Zone AE Zone AE NONE YES

Zone A Zone AE YES YES

* BFEs - Base Flood Elevations

DETERMINATIONThis document provides the determination from the Department of Homeland Security's Federal Emergency Management Agency (FEMA) regarding a request for a Letter of Map Revision (LOMR) for the area described above. Using the information submitted, we have determined that a revision to the flood hazards depicted in the Flood Insurance Study (FIS) report and/or National Flood Insurance Program (NFIP) map is warranted. This document revises the effective NFIP map, as indicated in the attached documentation. Please use the enclosed annotated map panels revised by this LOMR for floodplain management purposes and for all flood insurance policies and renewals in your community.

This determination is based on the flood data presently available. The enclosed documents provide additional information regarding this determination. If you have any questions about this document, please contact the FEMA Map Information eXchange (FMIX) toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the LOMC Clearinghouse, 847 South Pickett Street, Alexandria, VA 22304-4605. Additional Information about the NFIP is available on our website at http://www.fema.gov/nfip.

125360 PT202.BKR.11094118P.H17 102-I-A-C

Siamak Esfandiary, Ph.D., P.E., Program Specialist Engineering Management Branch Federal Insurance and Mitigation Administration

Follows Conditional Case No.: 06-09-BF52R

DELETED PROFILES: 03P-06P

Case No.: Page 2 of 5 Effective Date: December 3, 2012 Issue Date: July 17, 2012 LOMR-APP11-09-4118P



LETTER OF MAP REVISION DETERMINATION DOCUMENT (CONTINUED)

OTHER FLOODING SOURCES AFFECTED BY THIS REVISION

FLOODING SOURCE(S) & REVISED REACH(ES)

Blue Diamond Wash North Branch - from just upstream of the confluence with Duck Creek to just downstream of the Union Pacific Railroad

Blue Diamond Wash Middle Branch - from just upstream of Duck Creek to just downstream of the Union Pacific Railroad

Blue Diamond Wash Middle Branch Right Overflow - from just upstream of Interstate 15 to just downstream of Blue Diamond Road

Blue Diamond Wash Middle Branch Left Overflow - from just upstream of the confluence with Blue Diamond Wash North Branch to just downstream of South Valley View Boulevard

SUMMARY OF REVISIONS

Flooding Source Effective Flooding Revised Flooding Increases Decreases

Blue Diamond Wash North Branch Zone A Zone A YES YES Blue Diamond Wash Middle Branch Floodway Floodway NONE YES

BFEs* BFEs NONE YES BFEs No BFEs NONE YES Zone AE Zone AE NONE YES Zone AE Zone X (unshaded) NONE YES

Blue Diamond Wash Middle Branch Right Overflow Zone AE Zone X (unshaded) NONE YES BFEs No BFEs NONE YES

Blue Diamond Wash Middle Branch Left Overflow Zone AE Zone X (unshaded) NONE YES BFEs No BFEs NONE YES

* BFEs - Base Flood Elevations


125360 PT202.BKR.11094118P.H17 102-I-A-C

Siamack Esfandiary, Ph.D., P.E., Program Specialist Engineering Management Branch Federal Insurance and Mitigation Administration





COMMUNITY INFORMATION

APPLICABLE NFIP REGULATIONS/COMMUNITY OBLIGATION

We have made this determination pursuant to Section 206 of the Flood Disaster Protection Act of 1973 (P.L. 93-234) and in accordance with the National Flood Insurance Act of 1968, as amended (Title XIII of the Housing and Urban Development Act of 1968, P.L. 90-448), 42 U.S.C. 4001-4128, and 44 CFR Part 65. Pursuant to Section 1361 of the National Flood Insurance Act of 1968, as amended, communities participating in the NFIP are required to adopt and enforce floodplain management regulations that meet or exceed NFIP criteria. These criteria, including adoption of the FIS report and FIRM, and the modifications made by this LOMR, are the minimum requirements for continued NFIP participation and do not supersede more stringent State/Commonwealth or local requirements to which the regulations apply.

We provide the floodway designation to your community as a tool to regulate floodplain development. Therefore, the floodway revision we have described in this letter, while acceptable to us, must also be acceptable to your community and adopted by appropriate community action, as specified in Paragraph 60.3(d) of the NFIP regulations.

COMMUNITY REMINDERS

We based this determination on the 1-percent-annual-chance discharges computed in the submitted hydrologic model. Future development of projects upstream could cause increased discharges, which could cause increased flood hazards. A comprehensive restudy of your community’s flood hazards would consider the cumulative effects of development on discharges and could, therefore, indicate that greater flood hazards exist in this area.

Your community must regulate all proposed floodplain development and ensure that permits required by Federal and/or State/Commonwealth law have been obtained. State/Commonwealth or community officials, based on knowledge of local conditions and in the interest of safety, may set higher standards for construction or may limit development in floodplain areas. If your State/Commonwealth or community has adopted more restrictive or comprehensive floodplain management criteria, those criteria take precedence over the minimum NFIP requirements.

We will not print and distribute this LOMR to primary users, such as local insurance agents or mortgage lenders; instead, the community will serve as a repository for the new data. We encourage you to disseminate the information in this LOMR by preparing a news release for publication in your community's newspaper that describes the revision and explains how your community will provide the data and help interpret the NFIP maps. In that way, interested persons, such as property owners, insurance agents, and mortgage lenders, can benefit from the information.


125360 PT202.BKR.11094118P.H17 102-I-A-C

Siamak Esfandiary, Ph. D., P.E., Program Specialist Engineering Management Branch Federal Insurance and Mitigation Administration





We have designated a Consultation Coordination Officer (CCO) to assist your community. The CCO will be the primary liaison between your community and FEMA. For information regarding your CCO, please contact:

Ms. Sally M. Ziolkowski Director, Mitigation Division

Federal Emergency Management Agency, Region IX 1111 Broadway Street, Suite 1200

Oakland, CA 94607-4052 (510) 627-7175

STATUS OF THE COMMUNITY NFIP MAPS

We will not physically revise and republish the FIRM and FIS report for your community to reflect the modifications made by this LOMR at this time. When changes to the previously cited FIRM panel(s) and FIS report warrant physical revision and republication in the future, we will incorporate the modifications made by this LOMR at that time.


125360 PT202.BKR.11094118P.H17 102-I-A-C


Case No.: 11-09-4118PPage 5 of 5 Effective Date: December 3, 2012Issue Date: July 17, 2012 LOMR-APP



LETTER OF MAP REVISION

DETERMINATION DOCUMENT (CONTINUED)

PUBLIC NOTIFICATION OF REVISION

A notice of changes will be published in the Federal Register. This information also will be published in your local newspaper on or about the dates listed below and through FEMA’s Flood Hazard Mapping website at https://www.floodmaps.fema.gov/fhm/Scripts/bfe_main.asp. LOCAL NEWSPAPER Name: The Las Vegas Review Journal Dates: July 27, 2012 and August 3, 2012 Within 90 days of the second publication in the local newspaper, a citizen may request that we reconsider this determination. Any request for reconsideration must be based on scientific or technical data. Therefore, this letter will be effective only after the 90-day appeal period has elapsed and we have resolved any appeals that we receive during this appeal period. Until this LOMR is effective, the revised flood hazard determination information presented in this LOMR may be changed.

This determination is based on the flood data presently available. The enclosed documents provide additional information regarding this determination. If you have any questions about this document, please contact the FEMA Map Information eXchange (FMIX) toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the LOMC Clearinghouse, 847 South Pickett Street, Alexandria, VA 22304-4605. Additional Information about the NFIP is available on our website at http://www.fema.gov/business/nfip.


125360 PT202.BKR.11094118P.H17 102-I-A-C

Table 4. Summary of Stillwater Elevations

Elevation (Feet NAVD1)

Flooding Source 10-Year 50-Year 100-Year 500-Year

Lower Blue Diamond -- -- 2,395.7 --

Detention Basin

1North American Vertical Datum of 1988

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CROSS SECTION DISTANCE1 WIDTH (FEET)

SECTION AREA (SQUARE FEET)

MEAN VELOCITY (FEET PER SECOND)

REGULATORY

WITHOUT FLOODWAY

WITH FLOODWAY

INCREASE

Blue Diamond Wash - Middle

Branch

A 553 21 44 20.2 2,107.2 2,107.2 2,107.2 0.0 B 1,054 22 47 18.7 2,115.7 2,115.7 2,115.7 0.0

C 1,638 21 44 20.0 2,123.7 2,123.7 2,123.7 0.0

D 2,146 20 37 23.9 2,133.1 2,133.1 2,133.1 0.0

E 2,498 12 37 24.1 2,141.9 2,141.9 2,141.9 0.0

F 4,191 25 71 12.5 2,172.5 2,172.5 2,172.5 0.0

G 4,942 350 253 3.5 2,188.9 2,188.9 2,188.9 0.0

H 5,717 130 142 6.2 2,197.3 2,197.3 2,197.3 0.0

I 6,421 194 204 4.3 2,206.2 2,206.2 2,206.2 0.0

J 7,040 92 130 6.8 2,210.8 2,210.8 2,210.8 0.0

K 7,770 110 139 6.4 2,218.0 2,218.0 2,218.0 0.0

L 8,541 95 131 6.7 2,224.9 2,224.9 2,224.9 0.0

M 9,017 95 132 6.7 2,230.5 2,230.5 2,230.5 0.0

N 11,618 258 196 4.5 2,248.9 2,248.9 2,248.9 0.0

O 12,559 378 294 3.0 2,260.7 2,260.7 2,260.7 0.0

1 Stream distance in feet above Confluence with Duck Creek

FLOODING SOURCE FLOODWAYBASE FLOOD

WATER SURFACE ELEVATION

FEDERAL EMERGENCY MANAGEMENT AGENCY

CLARK COUNTY, NV AND INCORPORATED AREAS

FLOODWAY DATA

BLUE DIAMOND WASH - MIDDLE BRANCH

FEET (NGVD)

TABLE10

FEET (NAVD)

TABLE 5

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CROSS SECTION DISTANCE1 WIDTH (FEET)

SECTION AREA (SQUARE FEET)

MEAN VELOCITY (FEET PER

REGULATORY

WITHOUT FLOODWAY

WITH FLOODWAY

INCREASE

Blue Diamond Wash - North

Branch

A 123 28 32 17.5 2,073.2 2,073.2 2,073.2 0.0 B 523 10 34 16.5 2,080.3 2,080.3 2,080.3 0.0

C 1,323 10 43 13.2 2,090.5 2,090.5 2,090.5 0.0

D 2,210 10 38 15.0 2,095.9 2,095.9 2,095.9 0.0

E 2,598 10 37 15.3 2,099.1 2,099.1 2,099.1 0.0

F 3,573 10 38 15.1 2,107.3 2,107.3 2,107.3 0.0

G 4,173 10 44 12.9 2,113.0 2,113.0 2,113.0 0.0

H 4,818 20 32 17.9 2,122.0 2,122.0 2,122.0 0.0

I 5,603 126 108 5.2 2,144.3 2,144.3 2,144.9 0.6

J 6,377 41 75 7.5 2,153.2 2,153.2 2,153.3 0.1

K 7,186 33 69 8.3 2,162.7 2,162.7 2,163.6 0.9

L 7,637 32 67 8.4 2,168.0 2,168.0 2,168.0 0.0

M 8,406 31 69 8.2 2,178.9 2,178.9 2,178.9 0.0

N 9,189 49 76 7.4 2,188.2 2,188.2 2,188.2 0.0

O 10,008 62 90 6.3 2,195.3 2,195.3 2,195.3 0.0

P 10,569 98 102 5.5 2,205.5 2,205.5 2,205.5 0.0

Q 11,415 24 42 13.4 2,211.7 2,211.7 2,211.7 0.0

R 11,699 24 44 12.8 2,214.6 2,214.6 2,214.6 0.0

S 12,211 22 30 19.2 2,217.4 2,217.4 2,217.4 0.0

T 12,655 48 80 7.1 2,228.8 2,228.8 2,228.8 0.0

U 13,242 104 103 5.5 2,237.4 2,237.4 2,237.4 0.0

V 14,406 83 98 5.8 2,249.9 2,249.9 2,249.9 0.0

1 Stream distance in feet above the Confluence with Duck Creek

BASE FLOOD

FEDERAL EMERGENCY MANAGEMENT AGENCY

CLARK COUNTY, NV AND INCORPORATED AREAS

FLOODWAY DATA

BLUE DIAMOND WASH - NORTH BRANCH

FLOODING SOURCE FLOODWAYWATER SURFACE ELEVATIONS

FEET (NAVD)

TABLE 5

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EFFECTIVE DATE OF COUNTYWIDEFLOOD INSURANCE RATE MAP

August 16, 1995EFFECTIVE DATE(S) OF REVISION(S) TO THIS PANEL

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CLARK COUNTY,NEVADA

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CLARK COUNTY 320003 2562 F

��(SEE MAP INDEX FOR FIRM PANEL LAYOUT)

��This map is for use in administering the National Flood Insurance Program. Itdoes not necessarily identify all areas subject to flooding, particularly from local

community map repositorydrainage sources of small size. The should beconsulted for possible updated or additional flood hazard information.

Base Flood ElevationsTo obtain more detailed information in areas where floodways(BFEs) and/or have been determined, users are encouraged to consult

the Flood Profiles and Floodway Data and/or Summary of Stillwater Elevationstables contained within the Flood Insurance Study (FIS) report that accompaniesthis FIRM. Users should be aware that BFEs shown on the FIRM representrounded whole- foot elevations. These BFEs are intended for flood insurancerating purposes only and should not be used as the sole source of floodelevation information. Accordingly, flood elevation data presented in the FISreport should be utilized in conjunction with the FIRM for purposes ofconstruction and/or floodplain management.

Coastal Base Flood Elevations shown on this map apply only landwardNorth American Vertical Datum of 1988 (NAVD 88).of 0.0’ Users of this

FIRM should be aware that coastal flood elevations are also provided in theSummary of Stillwater Elevations table in the Flood Insurance Study reportfor this jurisdiction. Elevations shown in the Summary of Stillwater Elevationstable should be used for construction and/or floodplain management purposeswhen they are higher than the elevations shown on this FIRM.

floodwaysBoundaries of the were computed at cross sections and interpolatedbetween cross sections. The floodways were based on hydraulic considerationswith regard to requirements of the National Flood Insurance Program. Floodwaywidths and other pertinent floodway data are provided in the Flood InsuranceStudy report for this jurisdiction.

Certain areas not in Special Flood Hazard Areas may be protected by floodcontrol structures. Refer to Section 2.4 "Flood Protection Measures" ofthe Flood Insurance Study report for information on flood control structuresfor this jurisdiction.

projectionThe used in the preparation of this map was Universal Transversehorizontal datumMercator (UTM) zone The was 11. NAD83, GRS1980

spheroid. Differences in datum, spheroid, projection or UTM zones used inthe production of FIRMs for adjacent jurisdictions may result in slight positionaldifferences in map features across jurisdiction boundaries. These differencesdo not affect the accuracy of this FIRM.

Flood elevations on this map are referenced to the North American VerticalDatum of 1988. These flood elevations must be compared to structure and

vertical datum.ground elevations referenced to the same For informationregarding conversion between the National Geodetic Vertical Datum of 1929and the North American Vertical Datum of 1988, visit the National Geodetic

http://www.ngs.noaa.gov/Survey website at or contact the National GeodeticSurvey at the following address:

NGS Information ServicesNOAA, N/NGS12National Geodetic SurveySSMC- 3, #92021315 East- West HighwaySilver Spring, MD 20910- 3282

To obtain current elevation, description, and/or location information for bench marksshown on this map, please contact the Information Services Branch of the

(301) 713- 3242,National Geodetic Survey at or visit its website athttp://www.ngs.noaa.gov/.

Base map information shown on this FIRM was provided in digital format by theClark County GIS Management Office (GISMO).

This map reflects more detailed and up- to- date stream channel configurationsthan those shown on the previous FIRM for this jurisdiction. The floodplainsand floodways that were transferred from the previous FIRM may have beenadjusted to conform to these new stream channel configurations. As aresult, the Flood Profiles and Floodway Data tables in the Flood InsuranceStudy report (which contains authoritative hydraulic data) may reflect streamchannel distances that differ from what is shown on this map.

Corporate limits shown on this map are based on the best data availableat the time of publication. Because changes due to annexations or de- annexationsmay have occurred after this map was published, map users should contactappropriate community officials to verify current corporate limit locations.

Map IndexPlease refer to the separately printed for an overview map of thecounty showing the layout of map panels; community map repository addresses;and a Listing of Communities table containing National Flood Insurance Programdates for each community as well as a listing of the panels on which eachcommunity is located.

For information and questions about this map, available products associated with thisFIRM including historic versions of this FIRM, how to order products or the NationalFlood Insurance Program in general, please call the FEMA Map Information eXchangeat 1-877-FEMA-MAP (1-877-336-2627) or visit the FEMA Map Service Center websiteat http://msc.fema.gov. Available products may include previously issued Letters ofMapChange, a Flood Insurance Study Report, and/or digital versions of this map. Many ofthese products can be ordered or obtained directly from the website. Users maydetermine the current map date for each FIRM panel by visiting the FEMA MapService Center website or by calling the FEMA Map Information eXchange.

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SPark

LOMR stamp

SPark

Text Box

December 3, 2012

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MOLLYKNOLLCIRCLE

1% ANNUAL CHANCEFLOOD DISCHARGE

CONTAINED IN CHANNEL ��A

21022125 2121

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1% ANNUAL CHANCE FLOODDISCHARGE CONTAINED IN CULVERT


CONTAINED IN CHANNEL

2112

2080

2109

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ST

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CONTAINED IN CULVERT

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2167

2173

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2180

Blue DiamondWash Middle

Branch

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2088

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CONTAINS:


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CLARK COUNTY,

























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CITY OF RENOWASHOE COUNTY UNINCORPORATED AREASCITY OF RENOCITY OF RENO

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4794

4760

4720

4770

4682

4790

4870

4740

4880

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OW

VA

LL

EY

LA

NE

VISTA FAVOLOS O

GO

LDEN

MEA

DO

WR

OAD

EV

AN

S C REEK TER.

N D

EE

RM

EA

DO

WS

CO

UR

T

MEADOW

HILL

CIRCLE

T. 18 N.T. 18 N.T. 19 N.

LIMIT OF STUDY

4710

4692

4730

4750

4786

4787

4940

5049

5020

5070

4860

ZONE AE

11

34

10

35

S COPPER CREEK COURT

LIMIT OF STUDY

D

C

NOTE: MAP AREA SHOWN ON THIS PANEL IS LOCATEDWITHIN TOWNSHIP 18 NORTH, RANGE 19 EAST ANDTOWNSHIP 19 NORTH, RANGE 19 EAST.

ZONE AE

Dry Creek

Evans Creek

SU

NR

ISE

ME

AD

OW

S

LOO

P

Evans Creek

JUNE MEADOWS

ROAD

A

35

ZONE A

WASHOE COUNTY UNINCOPRPORATED AREAS

320019

4828

4700

4827

3 2

4696

4784

4829

4851

4853

4831

5070

4816

47824780

5080

4889

4886

5086

4980

4860

4920

4922

4909

4864

4849

CITY OF RENO320020

ZONE AE

WASHOE COUNTY UNINCORPORATED AREAS

320019

B

H G

E

D

STONE HILL CIRCLE


A

SQUIRES LN.

LAURELWOOD DR.

MEADOW CREEK DRIVE

BROOKVIEW COURT

C

B

RIDGEVIEW TERRACE

SHIRLEY LAKE COURT

DOG

HOLLOW

COURT

AL

PIN

E

ME

AD

OW

S

RO

AD

BLU

E

ME

AD

OW

S

CO

UR

T

WOODS CREEK COURT

ASPEN MEADOWS

COURT

F

EC

HO

C

RE

EK

C

OU

RT

SILVER CREEK COURT

BE

AR

C

RE

EK

C

OU

RT

GOLDEN CREEK ROAD

S D

EE

R

ME

AD

OW

S

CO

UR

T

SUNRISE MEADOWS

LOOP

N C

OP

PE

R

CR

EE

K

CO

UR

T

CLOVER MEADOWS

COURT

ALPINE CREEK ROAD

2270000 FT2275000 FT

14835000 FT

14840000 FT

256000m E 257000m E

4370

000m N

4371

000m N

4372

000m N

119°50’37.5"39°28’07.5"

119°50’37.5"

39°26’15.0"

119°48’45.0"39°26’15.0"

119°48’45.0"39°28’07.5"

JOINS PANEL 3240

JOIN

S P

AN

EL

3233

JOIN

S P

AN

EL

3230

JOINS PANEL 3230

Floodplain boundary

Floodway boundary

Zone D boundary

LEGENDSPECIAL FLOOD HAZARD AREAS (SFHAs) SUBJECT TOINUNDATION BY THE 1% ANNUAL CHANCE FLOOD

The 1% annual chance flood (100-year flood), also known as the base flood, is the floodthat has a 1% chance of being equaled or exceeded in any given year. The SpecialFlood Hazard Area is the area subject to flooding by the 1% annual chance flood. Areasof Special Flood Hazard include Zones A, AE, AH, AO, AR, A99, V and VE. The BaseFlood Elevation is the water-surface elevation of the 1% annual chance flood.

ZONE A No Base Flood Elevations determined.

ZONE AE Base Flood Elevations determined.

ZONE AH Flood depths of 1 to 3 feet (usually areas of ponding); Base FloodElevations determined.

ZONE AO Flood depths of 1 to 3 feet (usually sheet flow on sloping terrain);average depths determined. For areas of alluvial fan flooding, velocitiesalso determined.

ZONE AR Special Flood Hazard Area formerly protected from the 1% annualchance flood by a flood control system that was subsequentlydecertified. Zone AR indicates that the former flood control system isbeing restored to provide protection from the 1% annual chance orgreater flood.

ZONE A99 Area to be protected from 1% annual chance flood by a Federalflood protection system under construction; no Base Flood Elevationsdetermined.

ZONE V Coastal flood zone with velocity hazard (wave action); no Base FloodElevations determined.

ZONE VE Coastal flood zone with velocity hazard (wave action); Base FloodElevations determined.

FLOODWAY AREAS IN ZONE AE

The floodway is the channel of a stream plus any adjacent floodplain areas that must bekept free of encroachment so that the 1% annual chance flood can be carried withoutsubstantial increases in flood heights.

OTHER FLOOD AREAS

ZONE X Areas of 0.2% annual chance flood; areas of 1% annual chance floodwith average depths of less than 1 foot or with drainage areas less than1 square mile; and areas protected by levees from 1% annual chanceflood.

OTHER AREAS

ZONE X Areas determined to be outside the 0.2% annual chance floodplain.

ZONE D Areas in which flood hazards are undetermined, but possible.

COASTAL BARRIER RESOURCES SYSTEM (CBRS) AREAS

OTHERWISE PROTECTED AREAS (OPAs)

CBRS areas and OPAs are normally located within or adjacent to Special Flood Hazard Areas.

CBRS and OPA boundary

Boundary dividing Special Flood Hazard Areas of differentBase Flood Elevations, flood depths or flood velocities.

Base Flood Elevation line and value; elevation in feet*~ ~~ ~~ ~~ ~~ ~513(EL 987) Base Flood Elevation value where uniform within zone;

elevation in feet*

* Referenced to the North American Vertical Datum of 1988 (NAVD 88)

A A Cross section line

−−−−−−−−− Transect line23 23

97°07’30", 32°22’30"Geographic coordinates referenced to the North AmericanDatum of 1983 (NAD 83)

4275000mN 1000-meter Universal Transverse Mercator grid ticks, zone 11

6000000 FT 5000-foot grid ticks: Nevada State Plane coordinatesystem, west zone (FIPSZONE 2703), Transverse Mercator

DX5510 Bench mark (see explanation in Notes to Users section ofthis FIRM panel)

M1.5 River Mile

MAP REPOSITORIES

To determine if flood insurance is available in this community, contact your insuranceagent or call the National Flood Insurance Program at 1− 800− 638− 6620.



September 30, 1994EFFECTIVE DATE(S) OF REVISION(S) TO THIS PANEL

March 16, 2009_____________ − to add roads and road names, to add Base Flood Elevation, to update corporatelimits, to add Special Flood Hazard Areas, and to incorporate previously issued Letters of Map Revision.

For community map revision history prior to countywide mapping, refer to the CommunityMap History table located in the Flood Insurance Study report for this jurisdiction.

MAP SCALE 1" = 500’250 0 500 1000

FEET

150 0 150 300METERS

PANEL 3229H

NATI

ONAL

FLO

OD IN

SURA

NCE

PROG

RAM

NFIPFIRMFLOOD INSURANCE RATE MAP


Map Number

CONTAINS:


MAP NUMBER32031C3229H

MAP REVISED


WASHOE COUNTY,

NEVADAAND INCORPORATED AREAS

WASHOE COUNTY 320019 3229 HRENO, CITY OF 320020 3229 H

PANEL 3229 OF 3475(SEE MAP INDEX FOR FIRM PANEL LAYOUT)

NOTES TO USERSThis map is for use in administering the National Flood Insurance Program. Itdoes not necessarily identify all areas subject to flooding, particularly from local



the Flood Profiles and Floodway Data and/or Summary of Stillwater Elevationstables contained within the Flood Insurance Study (FIS) report that accompaniesthis FIRM. Users should be aware that BFEs shown on the FIRM representrounded whole− foot elevations. These BFEs are intended for flood insurancerating purposes only and should not be used as the sole source of floodelevation information. Accordingly, flood elevation data presented in the FISreport should be utilized in conjunction with the FIRM for purposes ofconstruction and/or floodplain management.





projectionThe used in the preparation of this map was Nevada Statehorizontal datumPlane west zone (FIPSZONE 2703). The was NAD83,

GRS1980 spheroid. Differences in datum, spheroid, projection or State Planezones used in the production of FIRMs for adjacent jurisdictions may result inslight positional differences in map features across jurisdiction boundaries.These differences do not affect the accuracy of the FIRM.




NGS Information ServicesNOAA, N/NGS12National Geodetic SurveySSMC− 3, #92021315 East− West HighwaySilver Spring, MD 20910− 3282


(301) 713− 3242,National Geodetic Survey at or visit its website athttp://www.ngs.noaa.gov/.

Base map road centerline information on this FIRM was provided by the WashoeCounty GIS Department. The data was provided in digital format and is dated nolater than 2010.

This map reflects more detailed and up− to− date stream channel configurationsthan those shown on the previous FIRM for this jurisdiction. The floodplainsand floodways that were transferred from the previous FIRM may have beenadjusted to conform to these new stream channel configurations. As aresult, the Flood Profiles and Floodway Data tables in the Flood InsuranceStudy report (which contains authoritative hydraulic data) may reflect streamchannel distances that differ from what is shown on this map.

Corporate limits shown on this map are based on the best data availableat the time of publication. Because changes due to annexations or de− annexationsmay have occurred after this map was published, map users should contactappropriate community officials to verify current corporate limit locations.


For information and questions about this map, available products associated with thisFIRM including historic versions of this FIRM, how to order products or the NationalFlood Insurance Program in general, please call the FEMA Map Information eXchangeat 1−877−FEMA−MAP (1−877−336−2627) or visit the FEMA Map Service Center websiteat http://msc.fema.gov. Available products may include previously issued Letters ofMapChange, a Flood Insurance Study Report, and/or digital versions of this map. Many ofthese products can be ordered or obtained directly from the website. Users maydetermine the current map date for each FIRM panel by visiting the FEMA MapService Center website or by calling the FEMA Map Information eXchange.

SPark

LOMR stamp

SPark

Text Box

December 3, 2012

Federal Emergency Management Agency Washington, D.C. 20472

December 27, 2012

CERTIFIED MAIL RETURN RECEIPT REQUESTED

The-Honorable Susan Brager Ch~.r, Clark County Board of Commissioners 500~outh Grand Central Parkway

;::;LasVegas, NV 89155

i•.

' l. c.

Dear Ms. Brager:

IN REPLY REFER TO: Case No.: 11-09-4118P

Follows Conditional Case No.: 06-09-BF52R Community Name: Clark County, NV Community No.: 320003 FIRM Panel Affected: 32003C2562E,

32003C2566E, 32003C2567E

116

In a Letter of Map Revision (LOMR) dated July 17, 2012, you were notified of proposed flood hazard determinations affecting the Flood Insurance Rate Map (FIRM) and Flood Insurance Study (FIS) report for Clark County, NV. These determinations were for Blue Diamond Wash North Branch- from just upstream of the confluence with Duck Creek to just downstream of the Union Pacific Railroad; Blue Diamond Wash Middle Branch- from just upstream of Duck Creek to just downstream of the Union Pacific Railroad; Blue Diamond Wash Middle Branch Right Overflow- from just upstream oflnterstate 15 to just downstream of Blue Diamond Road; and Blue Diamond Wash Middle Branch Left Overflowfrom just upstream of the confluence with Blue Diamond Wash North Branch to just downstream of South Valley View Boulevard. The 90-day appeal period that was initiated on August 3, 2012, when the Department of Homeland Security's Federal Emergency Management Agency (FEMA) published a notice of proposed Flood Hazard Determinations in The Las Vegas Review-Journal has elapsed.

FEMA received no valid requests for changes to the modified flood hazard information. Therefore, the modified flood hazard information for your community that became effective on December 3, 2012, remains valid and revises the FIRM and FIS report that were in effect prior to that date.

The modifications are pursuant to Section 206 of the Flood Disaster Protection Act of 1973 (Public Law 93-234) and are in accordance with the National Flood Insurance Act of 1968, as amended (Title XIII of the Housing and Urban Development Act of 1968, Public Law 90-448), 42 U.S.C. 4001-4128, and 44 CFR Part 65. The community number(s) and suffix code(s) are unaffected by this revision. The community number and appropriate suffix code as shown above will be used by the National Flood Insurance Program (NFIP) for all flood insurance policies and renewals issued for your community.

FEMA has developed criteria for floodplain management as required under the above-mentioned Acts of 1968 and 1973. To continue participation in the NFIP, your community must use the modified flood hazard information to carry out the floodplain management regulations for the NFIP. The modified flood hazard information will also be used to calculate the appropriate flood insurance premium rates for all new buildings and their contents and for the second layer of insurance on existing buildings and their contents.

... 2

If you have any questions regarding the necessary floodplain management measures for your community or the NFIP in general, please contact the Mitigation Division Director, FEMA Region IX, in Oakland, California, either by telephone at (510) 627-7100, or in writing at 1111 Broadway, Suite 1200, Oakland, California, 94607-4052. If you have any questions regarding the LOMR, the proposed flood hazard determinations, or mapping issues in general, please call the FEMA Map Information eXchange, toll free, at (877) 336-2627 (877-FEMA MAP).

cc: Mr. Kevin Eubanks Assistant General Manager

Sincerely, ' ) /""1

~--;:-<L.. J -~;::":~.--"''r<......... ~· ,_l

·- . ' / Luis Rodriguez;1>.E., Chief Engineering Management Branch Federal Insurance and Mitigation Administration

Clark County Regional Flood Control District

Mr. W. Layne Weber Principal Engineer Clark County

Mr. J arah Parke, P .E. Project Engineer MWH Global, Inc.

Documents

Federal Emergency Management Agencygustfront.ccrfcd.org/pdf_arch1/Lomr/11-09-4118P.pdf · cc: Mr. Kevin Eubanks Mr. Jarah Parke, P.E. Assistant General Manager Project Engineer Clark