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<br />. <br /> <br />. <br /> <br />*- <br /> <br />L>:'..: <br /> <br />Narrows Unit <br />January 1967 <br /> <br />HYDROLDGY <br /> <br />Contributing drainage area above <br />Annual runoff, average <br />Kersey, Colo. (1947-1961). . <br />Narrows Dam site (estimated) <br />Annual runoff, maximum <br />Narrows Darn site (estimated) <br />Annual runoff, minimum <br />Narrows Dam site (estimated) <br />Peak daily discharge of record <br />Kersey, Colo. <br />Minimum daily discharge of record <br />Kersey, Colo. <br />Inflow design flood: <br /> <br />. 13,450 sq. mi_ <br />537,200 ac .-ft. <br />365,200 ac.-ft. <br />663,400 ac.-ft. <br />ll5,700 ac.-ft. <br />31,000 c.f.s. <br />28 c_f.s_ <br />.1,363,000 ac.-ft. <br />344,000 c_f.s. <br /> <br />Narrows Dam site. <br /> <br />Historical floods: <br /> <br />Volume, 20 riays. <br />Peak discharge . <br />1844, l864, 1867, 1876, <br />1921, 1933, 1935, 1965 <br /> <br />1894, <br /> <br />. <br /> <br />REMARKS <br /> <br />The Narrows Unit was authorized as a unit of the Missouri River Basin <br />Project by the Flood Control Acts of 1946 and 1950. Preconstruction <br />activities were initiated in 1947 but were subsequently terminated due <br />to local opposition. Reauthorization of the unit became necessary with <br />passage of Public Law 88-442, 88th Congress, H. R. 9521 on August 14, 1964. <br /> <br />The Lower South Platte Water Conservancy District was formally organized <br />on May 6, 1964. The district has indicated its willingness to contract <br />for supplemental water to be made available by the unit. <br /> <br />7 <br />