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, PREFACE INTRODUCTION This report presents the res~lts of a floodplain study for the Roaring Fork River in Eagle County and tile Fryingpan River near Basalt, Colorado. The report wes prepared by Wright-McLaughlin Engineers of Denver, Colorado, at the request of the Eagle County Board ofCommlsslo<1ers In cooperatIon with the Color~do Water Conservation 80ard. Authori2i1tion This report was authorized by the Colorado Water Conservation Board in joint sponsorShip with Eagle County, Colorado. The Board's power and duty Is . . . Copies of this report are available for public diHributlon, for "nominal fee,,,ttheoffices listed below. A tec.hn i<:a 1 addendum detailing the hydro- logic and hydraulic studies to this report Is also available For review at thcsa"",off1ces. The addendum includes all pertinent data and calcolatiolls used In the Roaring Fork alld Frylngpan Floodplall\ Allalysls (Rderence II). . . . to devise and Formulate methods, means and plans For bringing aboot the greater utilization of the waters of the state and pre- vention of FlOOd damages thereFrom and to designate and approve storm or floodway runoFF channels or basins, alld to make such desig- nation, avaIlable to legislatIve bodle, of cities and Incorporated towns; to county plannIng commissions; and to boards of adjustment of cities; incorporated towns; and counties of this state. ... as stated in Section 37-60-106 (1) (c) of the Colorado Revised Statutes 1973. Eagle County PlannIng Departmellt P.O.Bo><789 Eagle County, Colorado 81631 The cities, incorporated towns, and counties within the study area shail provide zon1ng regulations Colorado Water Conservation BOMd 1313 Sherman, Room 823 Denver, Colorado 80203 ... to establish, regulate, restrict, and 11mit sUCh uses on or along any storm or Floodwater runoff channel or basin, as such storm or floodwater runoff channel or basIn has been desIgnated and approved by the Colorado Water Conservation Board, In order to lessen or avoid the hazards to person, and damage to property resulting from the accumulation of storm or floodwaters. . . . as Hated in Section 30-28-111 for county governments and Section Jl-13-~OI for municipal governments of the Colorado Revised Statutes 1973. Upon review and ~pproval of this report, the ColoradO ~ater Conservation Soard wiii designate ~nd approve as floodplain areas those areaS inundated by t~" 100-year flood (1) as descrIbed by the floodwater surface e levat ions andorofiles in this report. The use of thedeslgnated floodplain areas may t~en be re9ulat~d by the local gov~rn~nt. (1) The terms "Intermediste Regional F\ood," "lOO-year flood," and "one p,'rcent fiood" c.", be u,,,d I nlerchtlngetlbly as they ~re al I def ined by the Sa"'" type of flood event (,eeGiossary). How,,-v..r. for brevIty ~M ciarlty, the term "100-ye~r flood" wi 11 be used ex.;:lusively throughout thIs report.