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CREST Planning Study <br />Major Criteria and Assumptions and Comparisons <br />I. Future Projected Water Use <br />A. Base Conditions <br />1. Upper Basin estimated future depletions <br />Units: 1,000 acre -feet <br />Water Year 1983 1985 1990 1995 2000 2010 2020 2030 2040 <br />USBR1/ 2/ 3498 3529 4250 4447 49003/ 5105 51673/ 52293/ 52543/ <br />Forum Low- 3495 3935 4175 42983/ 45433/ 47893/ 50343) 5280}/ <br />Moderate 3534 4017 4412 45083/ 47013/ 48943/ 50873/ 5280 -3/ <br />High 3737 4640 4867 4913- 5005- 5096- 5188- 5280- <br />1/ Does not include 546,000 acre - feet /year reservoir evaporation from Lakes <br />Powell, Flaming Gorge, Navajo, Blue Mesa, Morrow Point, and Crystal. <br />2/ Does not include 520,000 acre - feet /year reservoir evaporation from Lakes <br />Powell, Flaming Gorge, Fontenelle, Blue Mesa, Morrow Point, and Crystal. <br />3/ Forum estimates extended to 5.8 million acre -feet (maf) by 2040. <br />The Bureau of Reclamation (Reclamation) projections exceed the Lower Forum <br />projections by about 300,000 acre -feet in 1990 and 1995, but Reclamation projections <br />are based upon original as planned and authorized documentation and should be <br />reasonably accurate. The study will categorize demands as transbasin or within basin <br />as well as agricultural, municipal, and industrial, etc. <br />2. <br />Lower <br />Basin Estimates <br />future <br />depletions <br />Units: <br />1,000 <br />acre -feet <br />Water Year <br />1983 <br />1985 <br />1990 <br />1995 <br />2000 <br />2030 <br />USBR <br />6016 <br />6777 <br />7367 <br />7392 <br />74184/ <br />75004/ <br />Forum Low <br />6375 <br />7358 <br />7398 <br />74134) <br />75004/ <br />Moderate <br />6509 <br />7389 <br />7439 <br />74484/ <br />7500/ <br />High <br />6813 <br />7418 <br />7.500 <br />7500- <br />7500- <br />4/ Forum estimates extended to 7.5 maf by 2030. <br />3. Surplus conditions will be effective to reduce the probability of <br />spills (flood control releases). Under these conditions, the surplus <br />will be delivered to The tIetrapoiitar, ;eater District and to the <br />Central Arizona Project, up to the assumed canal diversion capacities. <br />4. Shortage conditions reflecting the operating criteria pursuant to the <br />Colorado River Basin Project Act (Public Law 90 -537) are applicable to <br />maintain a minimum power pool of 1083 feet elevation in Lake `lead. <br />