Document: Outline of Secretary's Letter Transmitting Report on Pacific Southwest Water Plan to the President, December 16, 1963 (photocopy), page 2In succeeding years the amount of water available for division will steadily decrease as the Upper Basin develops. Ultimately the shortage may be as much as 2.0 m.a.f. or more. By the year 2000 we estimate that, absent new developments to improve Pacific Southwest water supply, the overall deficiency to the region will be about 5.0 m.a.f. The alternative to meeting this deficiency is a stagnated growth and economy. III. Development of Pacific Southwest Water Plan In the decade following 1952, when Arizona instituted its suit against California, investigations to develop comprehensive wat...