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<br /> <br /><:) <br />':,-) <br />':.1 <br />--J <br />~ <br />N <br /> <br />SUMMARY (Continued) <br /> <br />The following table compares water resources development for five <br />levels of development. Virgin water supply is estimated at 14.87 <br />million acre-feet. The five average annual levels of depletion are <br />shown by type of use, state, and subregion, The levels of development <br />first studied include the present (1965) and the framework plan <br />"Regionally Interpreted OBERS," which was determined as the region's <br />logical contribution to meet national needs. Three additional alter- <br />natives were developed to reflect capability of the region to supply <br />goods and services not fully evaluated in the OBERS projections. <br /> <br />(1) States' alternative plan based on the availability of 6.545 <br />million acre-feet of water. This plan utilized the same amount of <br />water as the Framework plan (regionally interpreted OBERS) development <br />with primary shifts in power, export, minerals, and irrigation within <br />states transfers in power between states and new uses for oil shale <br />and coal by-products. <br /> <br />(2) States' alternative plan based on depletion of 8.16 million <br />acre-feet of water plus delivery of an average 7.5 million acre-feet, <br />at Lee Ferry. The plan assumes the Colorado River water supply will <br />be firmed to meet the division of water by both the Colorado River <br />Compact and the Upper Colorado River Compact, and that the Mexican <br />Treaty delivery plus associated losses would be a national obligation. <br />Most of the increased depletion will occur in minerals, irrigation, <br />and export. <br /> <br />(3) States' alternative plan depleting 9.44 million acre-feet <br />based on use of water which is physically available at the project <br />site without considering political or legal restrictions. Substantial <br />augmentation would be required to meet Colorado River compact require- <br />ments of the lower basin. <br /> <br />Outflow for the five levels of development varies from 11.4 <br />million acre-feet at present to 5.4 million acre-feet, using the <br />1914-65 water supply and assuming no augmentation, <br /> <br />ii <br />