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Peak Discharges for Southern STD Error, $ <br />Plateau Regi on Average Range <br />• <br />4100 = 1008 + 2842 = 3850cfs 53 +56 to -40 <br />4500 - 1358 + 3834 = 5192cfs 65 +84 to -46 <br />Reference: McCain, J. F. and R. D. Jarett. <br />Manual for estimating flood characteristics of <br />natural-flow streams in Colorado. Colorado Water <br />Conservation Board, Colorado Department of Natural <br />Resources, Technical Manual No. 1, 1976. <br />4 - Select larger of two flood discharges for each recurrence <br />interval from 2 and 3 for use as design flood valves: <br />Southern Plateau Discharges <br />• <br />5 - Compute depths of selected RI floods from Table 4: <br />Depths <br />STD Error of Estimate, 8 <br />Average Range <br />25 +28 to -22 <br />D10 = 1.25 (173)0.261 = 4.8 ft <br />D50 = 1.54 (173)0.254 = 5.7 ft <br />D100 = 1.64 (173)0.254 = 6.1 ft <br />D500 - 1.98 (173)0.239 = 6.8 ft <br />34 +40 to -28 <br />36 +42 to -30 <br />44 +53 to -35 <br />6 - Select larger depth for each RI from 2 and 5 = South Plateau <br />Depths. <br /> <br />