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Question: 10 pts a mean draft of 140 million gallons per...

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(10 pts) A mean draft of 140 million gallons per day (mgd) is to be developed from a 240 mi2 catchment area (watershed). At the stream line, the reservoir is estimated to be 7,500 acres. The annual rainfall is 39 in, the mean annual runoff is 12 in, and the mean annual evaporation (from free water surface) is 35 in. (1) Make a sketch of the watershed with pertinent information and circle the control volume with a dash line. (2) Find the net gain or loss in storage this represents. (3) Compute the volume of water evaporated. Report all your answers in acre-ft/yr.
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