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<br />. <br />" <br /> <br />. <br /> <br />. <br />Hydrologic Modeling <br /> <br />. <br /> <br />;i;{ "Hi~'~';'~"';'8<<;'-"~i~~dkMLglg;04&~J"a,{b;;o1~Aii:k"o"':"'~'0bibh:&&2:iifu&~1~~\&,'J~kfiik~"O%&Sk'<iii~Mi~1\l~,,675i;;\lRjtirii;sQ;~ili-~~hi*;'~o:,'~ ;i,-->"",c'''1,!'iii:~,,;g>'o,\'o';'~;'4'~;i11~ii?i:ifuit:"oito~~,0:0X1ib~;;'b:;:; <br /> <br /> <br />Case Study: Sand Draw Basin <br />. SCS Computer Model (Rainfall-Runoff Model) <br />· Single Basin Analysis <br />· Rainfall Amount, Hydrograph, Basin Lag Time and SCS Curve <br />Number <br />. Model Calibrated to July 12th and FEMA Flows <br />· Rainfall, Hydrograph, Lag Time were Estimated <br />· Runoff Values (Peak Flow) were Estimated <br />· SCS Curve Numbers were "Backed Out" of the Model <br />. Simplifying Assumptions <br />· July 12 Rain Assumed to be 3" (Uniform Distribution) <br />· lOO-year, l-hour Rain from Jeffco Storm Drainage Criteria <br />· Resulting SCS Curve Numbers Represent Basin Average <br />