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<br />TABLE 13 : FLOW COMPARISON OF VALLEJO GULCH AT DURANT STREET <br />(DRAINAGE BASIN 16) <br /> <br /> PEAK FLOW <br /> SNOWMELT ONLY <br /> NATURAL NATURAL AND <br />RETURN RAIN ONLY SNOW ONLY MANMADE SNOW RAIN ON SNOW <br />FREQUENCY (cfs) (ets) (cfs) (ets) <br />AVERAGE ANNUAL - 2 2 - <br />2-YEAR 22 3 3 78 <br />5- YEAR 32 4 4 102 <br />10-YEAR 53 4 4 132 <br />50-YEAR 117 4 4 200 <br />100- YEAR 160 4 4 243 <br /> <br />NOl:ES: <br /> <br />Rain on snow event assumes 2-hour rain event on the average annual snowmelt event <br /> <br />The flows shown In this table are estimated using the HEC-1 Computer Program. These flows may vary <br />from the flows at the same location generated using CUHP/SWMM. <br /> <br />FlowComp.xlS <br />VaJlejoGulch-Table13 <br /> <br />WRC Engineering <br />PN 1963 <br /> <br />9/22/98 <br />7:55 AM <br />