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Show UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY Water Resources Division WATER SUPPLY OF THE CENTRAL ARIZONA AREA Introduction By letter dated May 4, 1951, Ihe Hon. Clair Engle, Member of Congress from California, requested certain data from William E. Wrather, Director, U. S. Geological Survey. The information requested is to consist of answers to 24 questions prepared by Mr. J. Richard Queen, Staff Consultant, Committee on Interior and Insular Affairs, House of Representatives. The questions were written to pertain to the South Coastal Basin, California, and have been replied to, for the South Coastal Basin by personnel of the Water Resources Division, U. S. Geological Survey, California. Mr. Engle's letter by reference applies the 24 questions to the Phoenix area, Arizona, and more particularly to the Central Arizona Project as denned in H. R. 1500 of the 82nd Congress. This report reproduces without change the wording of the 24 questions. To conform with Mr. Engle's distinction between the Phoenix area and the broader definition of the Central Arizona Project, a distinction has been made, where pertinent, between the two areas. Question I. How many underground reservoir basins have been identified in the South Coastal Basin? (Prepare a map of this area and identify each basin by number and name.) The "Phoenix area" is interpreted to include Basin 1 (Salt River Valley Basin) and Basin 2 (Lower Santa Cruz Basin) shown on the map, plate 1. The division between Basin 1 and Basin 2, along the channel of the Gila River, is arbitrary |