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Crystal Creak and Crystal Creak Cedar Gultch NEC -RAS Models Review <br />The main channel dignmerd was kadw b=rrenfly <br />therefore the 10D jmw 1lao* do was Incorrectly <br />mapped. Trim blank Irhe Is the approdmab carnet <br />main dunnal conbrgns and the light blur <br />shading In the aflaative FEMA FIRM 100 -rear <br />toodplain delineapan. <br />The floodpldn at the tlawaabeem end of Crystal Creak at <br />Cedar Gulch (outlined In bkok) la ewareatlmeted due to the <br />adremaly @hollowslopa used for the nonsol depth <br />downehmm boundary condition In the HEC4LW metlaL <br />Aho, croaehhga (marlmd with orenga stare) are not msdaled. <br />Because of this, the floodpkdn dsllnedbris upstream and <br />downstream of ft" aresalnps are misrepresented (hum for <br />all locations whore crossings are not modeled). <br />The floodpteht Is undenesthnated. <br />Cross sewtlenS are hart so aherply <br />upabeam that they creche arocill <br />high ground boundaries on the right <br />hank end prevmd water item <br />apnadlrg out Into IAN arca. <br />Tfhaflaodpla n Is underoWmabd. <br />Boat erose sections here amob <br />arliftldy largo o finehm flow areas <br />In the model, dnwing down the <br />simulated water murfav slonnion. <br />Bent Crams swoons ilea svelte <br />mtiflalel hqh ground hounds an <br />the right honk that prawrnt wow <br />from spreading ami Into the Brea. <br />Review of Zane A <br />Approulan s Study <br />Areae Mapped By <br />BTARR <br />Crystei Creek <br />S�3 <br />�M <br />�y •M1M <br />w�,�aahmp <br />"41st 41M: <br />