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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 />. <br />,. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />I. <br />. <br />. <br />. <br />. <br />I. <br />. <br />. <br />!. <br />. <br />. <br />. <br /> <br />CWCS Hvdrolo<lV Worksheet <br /> <br />Page 5 <br /> <br />Title of Study: <br />County: <br />Calculations By: <br /> <br />FIS - Gunnison County, Colorado and Incorporated Areas <br />Gunnison <br />jrs Date: January 14, 2002 <br /> <br />Documentation <br />This workbook estimates 1 OO-year discharges for approximate floodplains in Colorado using the following <br />source: <br />Browning, T.W. 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 /> <br />I COL-4: Colorado, Upper Gunnison River SUbregion <br />Status of Regression Equations for this sub-region: <br /> <br />G <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 />50.1 <br />0.838 <br /> <br />Limited by: <br />Minimum Drainage Area = <br />Maximum Drainage Area" <br /> <br />20 square miles <br />300 square miles <br /> <br />Discharge Calculations <br /> <br />Drainage Drainage 100-year <br />Point 10 Drainage Area Description Area (mi") Discharge (cis) <br />323 Carbon Creek - at mouth 25.52 756 <br />324 Ohio Creek - u/s of Little Mill Creek 102.13 2,418 <br />325 Little Mill Creek - at mouth 18.26 Outside Bounds <br />326 Ohio Creek - at mouth 165.05 3,616 <br /> . <br /> <br />1/1412002 <br />CWCB_Hydrology.xls <br />