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<br />3. Forecasts of Stream Flow <br /> <br />April 1, 1978 Forecasts of Inflow <br />to Lake Powell1 <br /> <br />Agency <br /> <br />Acre-Feet <br /> <br />Soil Conservation Service <br />Department of Agriculture (April-July). . . . . . . . . . . . . .. 9,780,000 <br />National Weather Service <br />Department of Commerce (April-July). . . . . .10,500,000 <br />Bureau of Reclamation <br />Department of the Interior (April-July). . . . . . . . .10,800,000 <br /> <br />The reconstructed inflow to Lake Powell for the period April- <br />July 1978 amounted to 8,995,000 acre-feet2 which was about 115 <br />percent of the normal inflow. <br /> <br />During the April-July 1978 period, changes in storage in Colo- <br />rado River Storage Project reservoirs above Lake Powell resulted in <br />an overall increase of 1,859,000 acre-feet with 62,000 acre-feet of <br />evaporation and 186,000 acre-feet increase in bank storage.3 <br />Excluding bank storage and evaporation, Fontenelle Reservoir stored <br />153,000 acre-feet; Blue Mesa storage increased by 571,000 acre-feet; <br />Flaming Gorge storage increased by 809,000 acre-feet; and Navajo <br />Reservoir storage increased by 326,000 acre-feet. <br /> <br />Actual regulated inflow to Lake Powell for the period April- <br />July 1978 was 6,821,000 acre-feet. <br /> <br />The virgin flow of the Colorado River at Lee Ferry for the 1978 <br />water year amounted to 15.3 million acre-feet4. <br /> <br />'Including water to be stored upstream in other Colorado River Storage Project Reservoirs. <br />'Exclusive of evaporation and seepage losses. <br />'lncluding Fontenelle Reservoir on Green River in Wyoming. <br />'Provisional records subject to revision. <br /> <br />26 <br />