OCR Text |
Show -18- The power analysis indicates a large amount of dump power available over a major portion of time provided adequate equipment be installed for its generation. If contractors for firm power should so coordinate their sources of power as to be able to utilize Boulder Canyon power at a 100 per cent load factor, no dump power would be available except through the provision of additional power units. The price obtainable for dump power may not warrant such an undertaking. In view of these uncertainties it is inadvisable to take dump power into consideration in determining relative advantages for different heights of dam. Determinations of firm power output have necessitated extensive estimates in base data. Due caution dictates that the results be scaled down at least until new and additional data obtainable only in the course of a number of years of observation, particularly of stream flow and rainfall, shall confirm or alter the estimates made. It is proposed that the comparison be based on firm power output 10 per cent less than that computed for conditions of 1938. Firm power output under 1938 conditions: Raise in water Computed firm Adopted firm Adopted annual output surface power output power output of firm powe>" Feet Horsepower Horsepower Kilowatt-hours 557 608,000 547,000 3,600,000,000 575 650,000 585,000 3,800,000,000 582_________663,000 597,000 3,900,000,000______ COST OF POWER OBTAINABLE BY RAISING DAM The selling price of falling water has tentatively been announced at 1.63 mills per kilowatt-hour of firm power. Estimates have been made on the same basis, of the increase in construction and annual costs occasioned by rais- |
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Original book: [State of Arizona, complainant v. State of California, Palo Verde Irrigation District, Coachella Valley County Water District, Metropolitan Water District of Southern California, City of Los Angeles, California, City of San Diego, California, and County of San Diego, California, defendants, United States of America, State of Nevada, State of New Mexico, State of Utah, interveners] : California exhibits. |