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<br />. <br /> <br />. <br /> <br />.' <br /> <br />to.... <br />c.o <br />~, <br /><.;, <br /> <br />AVAILABILITY OF WATER FOR ENERGY <br /> <br />Based upon (1) U.S. Bureau of Reclamation natural flow estimates <br />for the period 1906-1974, (2) CRSS model runs on the "high without" and <br />"high-hi" scenarios, and (3) the background informat ion presen ted in <br />this interim progress report, several tentative conclusions can be <br />posited regarding the availability of water for EET development. While <br />these are briefly set forth below, the reader is strongly urged to exam- <br />ine Chapter 7 in its entirety, that being the chapter from which this <br />summary is drawn. Also, please note that the analyses performed to date <br />do NOT take into account instream uses of water. Therefore, the tentative <br />conclusions drawn here with respect to water availability for EET develop- <br />ment may change substantially as the study progress. <br /> <br />Water Availability <br /> <br />The availability of water for EET development will be a function <br />of four major factors: <br /> <br />1. The potential for increased future consumption of water by other <br />users, either due to their economic ability to expand or due <br />to the support of federal and state programs and policies. <br /> <br />2. Interstate Compacts and the Mexican Treaty. <br /> <br />3. State water laws. <br /> <br />4. Hydrologic conditions. <br /> <br />Taking all these into account, it tentatively appears that even the <br />highest projected level of EET development with ~hich this assessment <br />is concerned in the year 2000 can be satisfied, both from the point of <br />view of the Upper Basin as a whole and from the point of view of any <br />particular sub-basin. Unknown is the extent to which water may be trans- <br />ferred from irrigated ag to energy, if at all. <br /> <br />While approximately 1 MAF per year would remain for consumption <br />in the Upper Basin, it is clear that pressures on the White River basin <br />would be significant. In addition, it is clear that additional Upper <br />Basin reservoir storage will be needed for EET development, as well as <br />most any other new future water use. <br /> <br />Hydrologic Impacts <br /> <br />Needless to say, flows would be reduced by the future development <br />of EET. Average reductions for the "high-hi" scenario can be found in <br />Table 7.2, which table should be compared to present conditions as depicted <br />in Table 1.1 (p. 1-7). Reductions for all other scenarios will, of course, <br />be of lesser amounts. <br /> <br />1-13 <br />