OCR Text |
Show -3- 4. When this project was taken up there were in the valley four inefficient private irrigation systems, of which three were purchased by the Reclamation Service on account of their rights of way and the desirability of adding to the project the lands covered by them. One of these systems was operated by pumping, one had an abandoned pumping system, and one was a gravity system which had silted up. Since their purchase both pumping plants have been put in order and an additional pump added. The three pumps have been operated by the Reclamation Service. The first cost of these purchases was as follows: Canal system and steam pumping plant ............$63,260.60 Canal system and scoop wheel pumping plant .... 89,614.14 Additional pump.................................................... 400.69 General expenses, undistributed .......................... 4,041.99 Total .............................................................. 157,317.42 5. Water supply.-The water supply is obtained from the perennial flow of the Colorado River without storage. Its drainage area comprises approximately 300,000 square miles. The rivers of the Colorado system receive their main supply from the melting snows on the mountains in Wyoming, Utah, and Colorado. The low-water discharge of the Colorado is from 3,000 to 4,000 second-feet, while the flood discharges, beginning in March and April and reaching the crest in June, may amount to 150,000 second-feet. The duty of water is taken as 5.5 acre-feet per acre per year. The following table, furnished by the Reclamation Service from records made by its officials during 16 years, indicate the excess of water over that required by the project in the minimum monthly flow of the Colorado River at Yuma: |
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Original book: [State of Arizona, complainant v. State of California, Palo Verde Irrigation District, Coachella Valley County Water District, Metropolitan Water District of Southern California, City of Los Angeles, California, City of San Diego, California, and County of San Diego, California, defendants, United States of America, State of Nevada, State of New Mexico, State of Utah, interveners] : California exhibits. |