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<br />Adllal Operations <br />Under Criteria- <br />\Vater Year 197.'i <br /> <br />3 <br /> <br />Operation of the Colorado River <br />during 1975 was based on a fore- <br />cast of runoff. Starting January 1, <br />the snowmelt runoff was forecast <br />and the required release of stored <br />water to meet demands was sched- <br />uled for each reservoir through <br />September. At the beginning of <br />each month thereafter through <br />June, the forecast was revised <br />based on precipitation and snow <br />data collected during the month <br />and the scheduled operation was <br />revised accordingly. <br /> <br />A description of the actual opera- <br />tion of each of the reservoirs in <br />the Colorado River Basin is given <br />in the following paragraphs. <br />Charts I through 9 show hydro. <br />graphs of monthly outflow from <br />the reservoirs and water surface <br />elevation and active storage in <br />the reservoirs for water year 1975. <br /> <br />