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There is, however, opportunity to develop over a million acre-feet of water in the Lower Colorado Basin under present conditions through certain salvage and construction operations. Such things involve additional storage for regulation of the Colorado River near Imperial Dam; river channel rectification along with accompanying phreatophyte control and ground-water recovery; and lining of existing canals, such as the Coachella, All-American, and Gila Gravity Canals. A program of this type would practically offset the diversion of slightly more than a million acre-feet into the Central Arizona area. Although the foregoing described actions could be accomplished, it appears that the ultimate solution to the water problem in the Southwest would be importation of water from the north coastal streams area. For example, there is about 30 million acre-feet of water being currently discharged into the Pacific Ocean from coastal streams from San Francisco north to, and including, the Klamath River. If approximately one-half of this were reserved for in-basin uses, it would be physically possible to export some 15 million acre-feet of water into the Central Valley Project area on through the Tehachapi Mountains and from there it could be diverted in most any direction to satisfy water uses in the Southwest area. 3Epson Perfection 4870 Photo, 400 dpi, 8 bit, 14,149,632 byte