Pacific Southwest Water Plan August 1963

Document: "Pacific Southwest Water Plan- Corrected to 8/19" Chapter VI, August 19, 1964, page 17areas, provided that a marketing policy is established and maintained in such manner as to complement, rather than compete with, the objectives of full resource development in the Southwest. The transmission between the two load areas could utilize a highvoltage, direct-current system. Serious consideration should be given to this potential power source. Under current intensive study are proposed interties between the upper and lower Colorado River Basins and between the Colorado and Missouri River Basins. Preliminary indications are that significant mutual benefits may be achieved. Basis of Estimates of Water and Power Supplies The estimates of future main-stem Colorado River water supply available to the Pacific Southwest region used in formulating the plan of development were based on the most critical period of Colorado River flows of record (1930-1963), combined with a liberal estimate of future Upper Basin depletions. This, of course, represents a conservative approach, which is believed appropriate in evaluating the effectiveness of the proposed plan in meeting water requirements under adverse conditions. Although such conditions could occur, they would not be the normal expectancy. Therefore, in evaluating power revenues, studies were based on the expectancy of the more normal conditions which govern the latest power operation studies for the Upper Colorado River Storage Project. VI-17Epson Perfection 4870 Photo, 400 dpi, 8 bit, 1,315,719 byte