OCR Text |
Show discharges. The average annual loss from Topock to Yuma was found to be 750,000 acre-feet annually. The resulting estimated discharges at Topock for 1902-1922, together with the reported dicharges there for 1923 to 1929 have then been corrected to obtain Boulder Canyon discharges, the correction factor adopted bearing the same relation to the recorded correction factor for Topock to Yuma, as the stream bed and valley floor areas. The loss from Boulder Canyon to Topock was thus found to be 250,000 acre-feet annually, and the loss from Boulder Canyon to Yuma, 1,000,000 acre-feet, or an average of 1,380 second-feet, under present conditions. The distribution of this loss through the year is based on the recorded distribution of loss from Topock to Yuma. While the annual loss is no doubt variable and bears some relation to heights and duration of floods, climatic conditions, etc., lack of sufficient records preclude a proper determination of such variation which is, in any event, comparatively small. Correction for past and future depletion. Past and 1928 irrigation development above Boulder Canyon, including transmountain diversions and of anticipated future development within the 50-year repayment period for the Boulder Canyon project have been reviewed, as has upstream power development. For the purposes of this report, Boulder Canyon Dam has been assumed completed in 1938 with development in the 10- |
Source |
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. |