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<br />. <br />. <br />. <br />. <br />. <br />. <br />.. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />I. <br />'. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />I: <br />. <br />. <br />I. <br />. <br />. <br />I. <br />. <br />\. <br />. <br />. <br />'. <br />. <br />. <br />. <br />. <br />. <br /> <br />CWCS HvdroloQv Worksheet <br /> <br />Page 1 <br /> <br />Title of Study: <br />County: <br />Calculations By: <br /> <br />FIS - Town of Gypsum, Colorado <br />Eagle <br />jrs Date: <br /> <br />October 17, 2002 <br /> <br />Documentation <br />This workbook estimates 1 OO-year discharges for approximate floodplains in Colorado using the following <br />source: <br />Browning, TW. 1999. Guidelines for Determining 100-year Flood Flows for Approximate <br />Floodplains in Colorado, Version 4.0. Colorado Water Conservation Board. January. <br /> <br />River Basin <br />[COL-l: Colorado, upper C~IO~ River Subregion <br />Status of Regression Equations for this sub-region: <br /> <br />M <br /> <br />Draft <br /> <br />Regression Equation Data <br />Q=aAb <br /> <br />Where: <br />Q = Discharge (cis) <br />A = Drainage Area (square miles) <br />a = coefficient = <br />b = coefficient = <br /> <br />79.5 <br />0.724 <br /> <br />Limited by: <br />Minimum Drainage Area = <br />Maximum Drainage Area = <br /> <br />1 square miles <br />950 square miles <br /> <br />Discharge Calculations <br /> <br />Drainage Drainage 1 DO-year <br />PointlD Drainage Area Description Area (mi") Discharge (cfs) <br />504 Hardscrabble Gulch 6.05 293 <br />505 Unnamed Tributary 1.09 85 <br /> <br />1011712002 <br />eweB_Hydrology.xls <br />