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. . . 002359 CHAPTER III PROJECT DEVELOFMENT (Yellow Jacket unit) .113,940 acre-feet for the full service lands and 3,980 acre-feet for the supplemectal service la~ds. The supply would average about 95.4 percent of the ideal re~uirement. The u~it would deplete the flows of the White River by an average of 77,450 acre-feet annually and would incresce the flows of the Yampa River by an averaGe of 23,610 acre-feet. The net .stream depletion of the Upper Colorado River Bacin flows reculting from the unit would' average about 53,840 acre-feet annual~y. Repayment Totel payment capacity of the water users in the Yellow Jacket unit area is estimated at $133,500 annually. Of this amount app~oximately $103,500 w~uld be re~uired for operation, maintenance, and replacement costa and 030,000 wouli be available for ~ortization of construction costs. Over a 50-year period the water UEers would be able to pay $1,500,000 toward coost.ruct1on cos~s or 8 percent of the total construction costs of $18,710,000. If the unit ~ere authorized, the rerc..inder of the construction cost ($17,210,000) would be re~uired frc~ the Upper Colorado River Basin Fund. TIle water users would re~u1re a development period of 5 ye~rs after tee first deli~ery of water and before the aS6essment of construction costs. Benefit-cost analysis The ratio of benefits to costs of the Yellow Jacket unit would be about 1.1 to 1 with the benefits estimated at $856,500 annually and the average annual e~uivalent costs estimated at $774,300. The annual net benefits (benefits in excess of costs) would amount to $82,200. The estimated benefits, all of which would result from irrigation, would include a direct benefit of $428,300, an indirect benefit of $265,400, and a public benefit of $162,800. Derivation of the average annual e~uivalent cost is shown in the tabulation on the following page. 62