FLOOD02442

• County: Rio Grande
• Community: South Fork
• Stream Name: South Fork Rio Grande River
• Basin: Rio Grande
• Title: Flood Hazard Study
• Date: 10/1/1980
• Prepared For: South Fork
• Prepared By: USDA Soil Conservation Service
• Floodplain - Doc Type: Floodplain Report/Masterplan

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The )/.1t;onal flood Insuranc" Pro>:."," """-" tll.. floodw"y <QMept In in'

cOClIputed!o, f"ture refer..nce. lIecauseofchel4fs"aOlOuntofcOUlputational

rate studies for co...unities part ic ipatin~ ;n its' rel!;ul3< programs.

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dau, floodll"Y ."formation is include<! in Appendix II U>l>uaee eo this

report. Data;,.".nt"b"ta. for"sndinclud...floodw"ywidths,c'ussaec-

StructuraL Flood Control Heasures

There..... noexlningQr currenety planned ftoodccntrolnruccures in

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tion"l fl.,.""rea, "nd aller'".''' velocities. C","puUtions are for an increase

t':1e study ate...

in .isect.."te. sudace elevations in 0.5' increments ftoIUO.O' to 1.5'

Mo.t of the buildinl!;s in the study a...., su.ceptible toche 100-yeu

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abolle the lOa-year flood.

flood, <lte in shalloll portions of the flood plain .000 potential da.....ges Can

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FLood Insurance

be lessened vith fLood proofin~ ~..sures,

Tke National Flood Insurance "ct of L968 (Titte XIII of rhe Housin~ and

FLood Warnin~ and Flood Forecastin~ Systems

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Urban Development Act, P.L. 90-448) recognized the necessity for flood plain

The National Oceanic and Atrnoapheric Ad~inistr.tion (NOAA) through its

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Ol8.nage""'nt. This Ac:tmakes federallyaubsidized insurance available to

National Weather Service (Ii'JS), "",inta!n.. year-around aurveillance of

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citizens in co~unities that adopt regulations controttin8 future develop-

ueather and fLood conditions. Olily weatker forecasts,are i..ued through

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...ents of their flood phin. In respect to encroack....nt on tile flood plain,

the NWS and di.8e~inated by radio and television .tation.. A general aLert

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the regulations require:

to tl,edangerof flash floodi.ng is one of the services orovided by the

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Ne...residential construction Or subs tant ia1 i..prove....ntofexist-
ing ho",e~ must have the lowest floor level above the elevation of the
100-year flood.

National Westher Service.

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Gen"ral forecasts of soo_e1t Nnoff for the RioCrandeare....de

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Non-res idential construction ,"ust ....et the 'aroe st~ndard or be
flood proofed to tl,at leve).

cooperatively but publisl,ed separately by tke NWS and the Soil Conservation

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The 1968 Act benefits <WIlen of structures already in the flood-prone

Service. Strea..Uowforecastinll.isbasedonsevera1 factorsincludin&

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ue...... by providing insurance thllt had been unavailable through private

precipitation, ~ater content in the mountain sno~pack, and soil moisture

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......~.n;..c ,

'f't.eA':t':!'!!!t'!!':!

e ~~~~e~eti~~ ~rc~r=~ of i~=~r====

.u...~
_""'''Uk

!tvv':

conditicms on the ~"tershed. The forecasts 4<e .."de I>rilll8rily for ..sti.."t-

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d"""'v,eby the privnte flood insurllnce industry and the federa!.govcrnOlCnt.

in.o:wlltcr aupply for irriltation, industrial,..unicipa1andotheruseA;

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The unincorporated areAs of ~io Grande County are psrticipatinll. in the

hn~ever, the data is ...lao used to indicate potential flooding fro.. sno""",,lt

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Federal Emergency Management "",ency's National Flood Insurance Progta...1

[unoff,

Flood i"'U[An"e is available to owners and occupants of all buildings,

EVAcuation Plan

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"",bilehCXlle. and their contents.

An "Emergency EVAcuation and Opeution Plan" should provide for

a l"r~ in~ the pub L ic ot potent iaL t lood in~. and coordinat inll. co",",uni ty and

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lFo....erly under HUD-The functions of the !'edenllnauunce
Administration,U.S. Dep3rt....ntofllousinga"dUrbsnOevelop""'nt...eff:
transferred to the newly eatabtiahed r.edcra1Emergency Manage.... ntAgency,
Aprit3,1979.

,,""nty s~rdees durin~ ~"(!.I'''~(!ney. Phn imolerncnt"tion dudn~ tl,~ ti'll.e of

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