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<br /> <br />2--71-6 <br /> <br /> <br />.. <br /> <br />",(.I1CJl"lr'?I <br />"c/.- -'I.... <br />':~\ <br />~ <br /> <br />DEPARTMENT OF THE ARMY <br /> <br />OMAHA DISTRICT. CORPS OF ENGINEE.RS <br />6014 U,S, POST OFFicE ANO COURTHOUSE <br />OMAHA, NEBRASKA 66102 <br /> <br />MROPD-F <br /> <br />1 December 1917 <br /> <br />Mr, Victor G. Seirerth <br />City Engineer <br />911 Tenth Street <br />Golden, Colorado 80401 <br /> <br />/PlJ??/Nt;;;Jf?, <br />f/; ,lLLJt.5iJ.P!lfjj <br />t!J1J...._DtC Os 1977-;W <br />COl;)---- I u <br />CONSERVA'r. WA T€R- <br />ION BOARD <br /> <br />Dear Mr. Seirerth: <br /> <br />In response to your 12 October 1977 request, we are providing hydrologic <br />inrormation on Tucker Gulch and Kenneys Creek in the Golden area. Hydro- <br />graphs ror the 10-, 50-, 100~, and 500-year rloods are provided at major <br />points along each stream, Discharge and runorr values at the mouth or <br />each stream are as rollows: <br /> <br />Discharge (c.r.s.) <br /> <br /> , <br />10-Year 50-Year 100-Ye$.r 500-Year <br />TUCKER GULCH <br /> - <br /> , <br />1,053 3,972 5,53'V 10,910 <br />,236 ,624 ,831 1. 385 <br />KENNEYS CREEK <br />1,541 4,055 5,511 ... 9,647 <br />.491 1.017 1,362 2.117 <br /> <br />Runorr (in,) <br /> <br />Discharge (c.r,s.) <br />Runorr (in.) <br /> <br />One-hour point rainrall values and a rainrall distribution were developed <br />rrom NOAA Atlas 2 ror use in the EPA Storm Water Management Model, Rain- <br />fall was corrected ror depth-area by using the drainage areas of Tucker <br />Gulch (11 sq':"mi,) and KenneJs Creek (6 sq. mi.). Expected probability <br />was then applied to the corrected rainfall. Constant infiltration rates <br />of 1 in./hr. in the mountains and 0.5 in,/hr, in the plains were used in <br />the models. Detention storage was6.~ in. ror pervious areas and 0.2 in. <br />for impervious area:3. <br /> <br />J'_ <br />A., ."" <br />'.)0, <br />,', <br /> <br />