FLOOD07531

• County: Ouray
• Community: Ouray
• Stream Name: Uncompahgre River
• Basin: Gunnison
• Title: Floodplain Information Report
• Date: 4/1/1978
• Prepared For: Ouray County
• Prepared By: A & S Consultants
• Contract/PO #: &&
• Floodplain - Doc Type: Floodplain Report/Masterplan

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INTRODl.:CtlOX

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Purpose and Scope
This report was prepared to provide information relative to the occurrence
of floods ' and to guide local officials in planning the use and regulation
of the floodplain areas so that flood hazards Bod future flood damages are
tninimhed. It includes inforntationon hiatorical floods, cdsting factors
which influence the flood hazards, and the nature and extent of probable
future floods.

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Authorization

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This report was ourhorized by Lhe Colorado Water Conservation Board in
joint sponsorship with Ouray County, Colorado.
The Board's power Bod duty is ...

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... to ,,-vise snd formulate methods, means Bnd plans for
bringing about the greater utilization of the waters of the
state"nd prevention of flood damages therefrom, and to
designate and approve storm or floodwater rU<loff channels or
basins, and to make such designations available to legisla_
tive bOdies of cities and incorporated towns, to county plan_
ning commiasions, and to boards of adjustment of cities, io-
corporatedto"",s, and counties of this state"...

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The report data includes flooded area maps delineating the lOO-year flood
boundary, flood profiles and floodwater surface elevations for the 10, 50,
100 and 500 year floods ae selected reference points. A Technical Adden-
dum includes the supporting engineering and hydrologic data and computations
(Reference 11).

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as statod in Section 37-60-106 (1) (c)
1973.

of the COlorado Revised Statutes

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The cHies, incorporated to""II, "nd counties wUhfn the study ar~.a mal'
provide zoning rcg"lations...

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... to establish, rll8u1ate, restrict, and limit such u~~s on
or "lo"g "ny stor", ox floocwaterrunoff char.nel or basin, as
such storm or floodwater runoff channel or basin has been
designated "nd approved by the Colorado;.'atcrCons,.rv"tion
Board, in ordcr to lcs~~ll or avoid the hazards to persons and
da,.,;fle to property rps"lcing frnm the "-coum"btio" of storm
orfloo<lwatccs"... -

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a$ stated in Section 30-28-111 for county governments and Suction 31-23-201
for llmuidpal govcrI\,"cnt~ of the COlurado Rcvis"d Statutes 1973.

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Upon revicw and approval of this rPl'"rt, the Cclor.,do !'bter Conserv"U.o"
Board. will design"t" ~'i.1 approve as floodplain ateas those "rea~ inundated
by the 100-year flood as described by the floodwater surface elevations
"ndprofiles in this r"port. The use of the dcstlSn"ted floodplain areas
may then be regulated by the local govcrn~ent.

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The terms "ITltermcdi"rc Reglonal Flood" "lOO-u"ar flood " and "0 ne
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percent, ood ""n b~ uspd interchang~ably ~s th<oy are all defined by
th~ s"",,, type of flood c~'~nt (see Gluss<lry). jJ"w,'v~r, for br~vity
and "larity, the t~rm "lOO-.}''''''r flood" will be "sed <,xclusivelv
l},'l)ughoc1[thlsr"port. .

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