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Show LEEDS, HILL AND JEWETT Future Salt Burden of Colorado River. 8-15-58 -13- amount that may be precipitated in irrigated areas, the amount that may be leached from soils as a result of irrigation, and the amount that may be added by solution from the banks and beds of reservoirs. The deduction on account of trans-basin diversions is estimated by Erickson to be 110, 000 tons per year. Ris estimates of precipitation in Glen Canyon Reservoir and in Lake Mead -were 1, 330, 000 tons per year. If both of these values be accepted, his total of 11, 967, 000 tons per year is reduced to 10, 527, 000 tons per year. The average concentration at points of diversion below Lake Mead, assuming no further change in the character of the water, would thus be as follows for varying quantities available for diversion and delivery to Mexico: Quantity Available Average Acre Feet T/AF 10,000,000 1.05 9,000,000 1.17 8,000,000 1.32 7,000,000 1.51 On the other hand, if we start with the 176, 800 tons-equivalent of the principal ions in waters released from Lake Mead, the average for 1943 to 1953, we arrive at similar values. Precipitation of carbonates in Lake Mead evidently averaged about 17, 000 tons-equivalent per year. If the same amount of precipitation |
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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] : |