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001418 -12- 10. Depletions in state of Colorado (Cont'd)1 as much. or 3.680.000 acre feet per year during the drouth cycle,- a figure comparable with tr.e 3.425.000 acre feet of the Report (after correction as above oul; lined). Expressed in another way. if the depletions average 3.425.000 acre feet in the clrouth cyc Ie year. per Report, then in a normal year they would average () 4.a:l0.000 acre feet. . a figure comparable with tll3 4,600,000 acre feet estimated by this office. . Present and potential depletions in the Upper Basin. averaging 6.065.000 acre feet in a drouth cyc Ie year. upon the same assump- tion. would average 7.580.000 acre feet al.nually in a normal year. In other words. the Bureau Report contemplates that beneficial con- sumptive use in the Upper Basin will approximate 7.500.000 acre feet al1llually. as provided in the Colorado River Compact. However. if the Compact be interpreted to limit total depletions in the Upper Basin to 7,500.000 acre feet annually. then the projects described in the Report will bring the total depletions. including reservoir losses. to 6.896.000 acre feet in a drouth cycle year. and to 8,620.000 acre feet in a normal year. Under such an inter- pretation the described projects would exceed allowable depletions and would in part become impossible of attainment. 11. Power Productionl The Report describes 35 potential hydro-electric power plants in the Colorado River Basin. with a total installed capaoity of more than 3.5CXl.000 EVI. Added to present capacities. principally at Boulder Dam. the total in the Colorado River Basin will ultimately e::ceed 5.000.000 KVI. Seven of the new plants located in the Lower Basin. mostly on the main stream. would have a total installed capacity of 1.948.000 KW.. and would produce ten-billion kilowatt-hours a year. This would satisfy all ex- pected future demands until 1961. at which time. aocording to the a,eport. the growing po~~r market is expected to exceed the power supply. , The 28 power plants in the Upper Basin. mostly on tributary streams. would have an installed capacity of 1.695.000 KVI., and an annual output of nine-billion kilowatt-hours a year. The Report comments that this is more than the anticipated requirements for power in the Uf'per Basin, including pumping of irrigation v;ater. and would leave some for transmission to adja- oent areas. . NOTE (16)1 Not included in the Report are the similarly large power possi- bilities attaching to the Eastern Slope features of the Colorado- Big Thompson. Blue-South platte. and Gunnison-Arkansas projects, which will come into competition with plants in the Upper Colo- rado River Basin for the power markets of adjacent areas. such as Denver and pueblo. Hhile the amount of potential power to be generated on the Eastern slope might be estimated. with perhaps the same accuracy as the estimates contained in the Report. they