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<br />"Analysis of the Magnitude and Frequency of Floods in Colorado" <br />(Reference 5). <br /> <br />Q100 = I640(A)388 <br /> <br />Where A = Drainage Area in square miles <br /> <br />3.2.4 Result Comparisons <br /> <br />Table 2 shows the results of all four regressIOn equations when <br />compared to the HEC-HMS model output. <br /> <br /> <br />Table 2. HEC-HMS vs. Re ressionE uation Results <br /> <br /> <br />Draina e Area mi2 <br />Baker HEC-HMS <br />CWCB Regression E uations: <br />SPL-1: Eastern Plains <br />SPL-2: Southern Foothills <br />ASFPM Regression Equation <br />USGS Regression Equation <br /> <br />129 <br />8,489 <br /> <br />201 <br />13,44 7 <br /> <br />69 226 <br />5,673 43,691 <br />11,287 24,522 <br />16,951 26,057 <br />8,478 13,435 <br /> <br />22,333 <br />21,664 <br />10,808 <br /> <br />29,636 <br />25,135 <br />12,838 <br /> <br />In general the discharges fall with in the confidence limits of the above <br />regression equations. The exception is West Bijou Basin which has <br />slightly higher values then the regression equations. After performing <br />a sensitivity analysis, it appears as though the higher discharges are <br />due to the high concentration of "D" type soils within the basin. <br /> <br />5 <br />