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<br />PART VI. PRESENT AND FUTURE DEVELOPMENT <br /> <br />..... <br />-..l <br />0; <br />-,1 <br /> <br />This section of the report summarizes the project depletions used by the <br />Colorado River Simulation System (CRSS) to estimate the impacts of depletions <br />by development at selected stations within the Basin. Part VIII summarizes <br />the results of the computer modeling. <br /> <br />Table VI-l presents a summary of the estimated present and projected <br />future d~pletion of water through the year 2010 for both the Upper and Lower <br />Basins of the Colorado River. The projections for the years 1985 through 2010 <br />represent- the best estimate by the Bureau of Reclamation of how water use will <br />be developed over the next 25 years. The projections were made after <br />consultation with individual States within the Colorado River Basin; however, <br />the States do not necessarily concur with the projections adopted by <br />Reclamation for planning purposes. <br /> <br />A. Upper Basin Depletions <br /> <br />Table VI-I summarizes estimates of depletions due to the activities of <br />man in the Upper Colorado River Basin. These estimates were made by the <br />Bureau of Reclamation in consultation with the water resource agencies of the <br />Upper Basin States and have been reviewed by the States. The values shown <br />herein do not necessarily have the concurrence of the States. <br /> <br />. Estimates of use in 1985 were developed by updating depletions reported <br />in the up~r Colorado Region Co~ehensive Framework StUda published in June <br />1971. ProJections of water use beyond 1985 were develope from information <br />supplied by State water resource agencies and from construction schedules of <br />projects authorized for construction or already under construction. <br /> <br />In Table VI-l the entry under each State labeled "Evaporation, Storage <br />units" represents that State's share of total evaporation from Flaming Gorge <br />Reservoir, Lake Powell, and the Aspinall Unit Reservoirs which will be charged <br />to that State when total Upper Basin water development is reached. This is <br />provided for in Article V of the Upper Colorado River Basin Compact. <br /> <br />The Upper Colorado River Basin Compact provides that the States of <br />Arizona, Colorado, New Mexico, Utah, and Wyoming will share in the consumptive <br />use of water available in the Upper Basin in the following proportions: <br />Arizona 50,000 acre-feet, Colorado 51.75 percent of remainder, New Mexico <br />11.25 percent of the remainder, Utah 23.00 percent of the remainder, and <br />Wyoming 14.00 percent of the remainder. <br /> <br />VI-I <br />