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The Central Arizona Project was originally described in detail in the Bureau of Reclamation report of December 1947, which, together with review comments, was published in House Document No. 136, 81st Congress, 1st Session. Authorization bills passed the Senate in the years 1950 and 1951, but hearings were postponed by the House Committee on Interior and Insular Affairs in 1951 until such time as Arizona's right to the use of Lower Colorado River water was adjudicated or settled by other means. Following the Supreme Court Decision in Arizona v. California, the concepts and data originally presented in the 1947 report were updated and brought current by the Bureau of Reclamation in a Supplemental Report dated June 1963. A bill to authorize the project (S. 1658) was introduced on June 4, 1963, the day following the Supreme Court decision, and identical bills were subsequently introduced in the House of Representatives by each of Arizona's three Congressmen. Hearings on S. 1658 were held before the Subcommittee on Irrigation and Reclamation of the Senate Committee on Interior and Insular Affairs on August 27 and 28 and October 1 and 2, 1963. Direct deliveries would be used to supply both supplemental and exchange water. Since the present ground-water overdraft exceeds the import capability of this system, the overdraft would continue in the Central Zone but at a substantially reduced rate. In addition to the aforementioned benefits, all proposed reservoirs would also provide fish and wildlife and recreational facilities. The constantly increasing municipal and industrial demands would be satisfied in the future by additional works to be provided for in the long-range planning program. California--State Aqueduct Enlargement--The plan proposes conveyance of an additional 1,200,000 acre-feet of import water annually through enlargement of the portion of the California Aqueduct from Wheeler Ridge to Cedar Springs in order to obtain the substantial cost-saving advantages of combined construction of these conveyance facilities. The California Aqueduct, which is a key feature of the $2 billion State Water Plan now under construction, is being built to convey water from the Sacramento-San Joaquin Delta southward through the Central Valley and Tehachapi Mountains into southern California. Construction has already advanced from the Delta southward to such an extent that savings through enlargement will be practical only for that portion southward from Wheeler Ridge. A major savings, estimated at over $100,000,000 can be realized through enlargement of the Wheeler Ridge-Cedar Springs section of the aqueduct, as contrasted with independent construction. However, to VI-9Epson Perfection 4870 Photo, 400 dpi, 8 bit, 14,053,376 byte