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<br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />i. <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 />I. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />I: <br />. <br />. <br /> <br />CWCB HvdroloQv Worksheet <br /> <br />Page 1 <br /> <br />Title of Study: <br />Caunty: <br />Calculations By: <br /> <br />FIS - Tawn .of Ridgway <br />Ouray <br />GGS <br /> <br />Date: <br /> <br />February 20, 2001 <br /> <br />Documentation <br />This warkbaok estimates 1 OO-year discharges for approximate flaodplains in Colarado using the following <br />saurce: <br />Browning, TW. 1999. Guidelines for Determining 100-year Fload Flows for Approximate <br />Floodplains in Calorado, Version 4.0. Calorado Water Conservatian Baard. January. <br /> <br />River Basin <br /> <br />-~ <br /> <br />COL- 3: Colorado, Lower Gunnison River Subregion <br /> <br />Status .of Regressian Equations far this sub-region: <br /> <br />Draft <br /> <br />Regression Equation Data <br />Q=aAb <br /> <br />Where: <br />Q = Discharge (cfs) <br />A = Drainage Area (square miles) <br />a = coefficient = <br />b = caefficient = <br /> <br />180.8 <br />0,578 <br /> <br />Limited by: <br />Minimum Drainage Area = <br />Maximum Drainage Area = <br /> <br />2 square miles <br />8000 square miles <br /> <br />Discharge Calculations <br />Drainage <br />Area ID Drainage Area Description <br />_.-----l._n__ COttonwoocJ....9'. (~f'lco/11jlahg.r.e River) <br /> <br />Drainage <br />Area (mi") <br />4.20 <br /> <br />100-year <br />Discharge (cfs) <br />414 <br /> <br />2/20/01 <br />CWCS_Hydrology.x1s <br />