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<br />O~, '1011" <br />u 1L U i J <br /> <br />spillway crest elevation, and the dam crest level. Associated <br />with each zone, as shown in Figure 3, are minimum and maximum <br />outlet capacities. Values, given in Table I, are based on res- <br />ervoir capacity allocation sheets dated: <br /> <br /> Lake Powe 11 December 1966 <br /> Lake Mead June 1972 <br /> Lake Mohave June 1968 <br /> Lake Havasu October 1968 <br />and as published project data. [4] <br /> <br />(2) Area-capacity relationships - The program requires the res- <br />ervoir surface area to be related to the reservoir volume by the <br />fourth degree polynomial: <br /> <br />A = C1 + CzV + C3Vz + C~V3 + C5V~ <br /> <br />wherc <br /> <br />A is the area in 1,000 acres <br />C1-Cs are coefficients determined by least squares <br /> <br />V is the volume in 1,000 acre-feet <br /> <br />All volumes include dcad storage. Data for each reservoir were <br />obtained from available capacity and area tables with the follow- <br />ing dates: <br /> <br />Lake Powell <br />Lake Nead <br />Lake Mohave <br />Lake Havasu <br /> <br />April 10, 1966 <br />April 1, 1967 <br />October 1, 1949 <br />October 1, 1957 <br /> <br />Coefficients were computed using a modified version of a multi- <br />ple regression program developed by the Kansas State Geological <br /> <br />8 <br />