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Big Creek HEC -RAS Model Review <br />The mein channel nllgmnwd was 1psplyd Incermdy <br />thnrfON the 100-ywr flosdplaln was hmorrerdiy <br />mapped. Sha black Ike Is the gipproxlmats oarscl <br />mein channel taxrlrOn and the blue line in the <br />main ehannef tanlerllne used In do 1-1111CAPS model. <br />Also, nose sadicna are beak m sharpy upebum <br />that qNy may creafe artlRaial high around boundarNm <br />on the banks end pntroat wabrfrorn sPFWAng oaf. <br />Crouings (marked whth orange stsrt <br />giro rmodeled Because of this, <br />the floodplain delinratlons upstream <br />m <br />and downstrum ore=@ oawngs <br />are n1laMruanlad (true for sit <br />foeations where crossings are not <br />mods". <br />Rsriswaf Zee A <br />RM <br />Approximeft Study <br />Areas Mapped By <br />STARR <br />Blp Croak <br />rerwcw*,wa <br />19E . <br />e I= 200 <br />r�inuw <br />,� MM7�i5a W <br />