WSP10277 - Laserfiche WebLink

Home Browse Search

2 ~ The Commission has agreed by exchange of letters that the records show that the differential durin~ calendar year 1978 was in accord with Point 1 of Minute No. 242. .' '. .' The results of operations under Minute No. 242 since it became effective on June 24, 1974 are tabulated as follows: Year Salinity in ppm (U.S. Count) Imperial Dam Above Morelos Dam Differential 1974 (June 25 to Dec. 31) 832 972 140 1975 829 964 135 1976 823 955 132 1977 820 943 123 1978 812 928 116 The results of operations under ~Iinute No. 242 are shown graphically on Exhibit 2, which also shows the salinity of the waters arriving at Imperial Dam and of the waters made available to Mexico at the Northerly International Boundary since 1951, the first full year of deliveries to Mexico under the Water Treaty of 1944. . The interim measure adopted hy the United States to effect the reported salinity differential pending completion and operation of a desalting project, consists of discharging of all Wellton-}Iohawk drainage waters by means of a bypass channel to the Santa Clara Slough on the Gulf of Calif- ornia, and substituting for such waters an e~ual volume of other waters, consisting principally of waters ~rom above Imperial Dam and of water pumped on the Yuma Mesa. The nuantity of Well ton-Mohawk drainar,e waters discharged to the Colorado River helow ~ore10s Dam and the Gulf of Calif- ornia and substituted for by other waters in makin? deliveries to Mexico under Minute No. 242, since it became effective on June 24, 1974, are tabulated as follows: Year Acre-feet Cubic Meters 1974 (June 25 to Dec. 31) 113,645 140,180,000 1975 214,729 264,866,000 1976 205,395 253,353,000 1977 206,822 255,113,000 1978 182,036 224,540,000 Deliveries on the Land Boundary Point 1 of Minute No. 242 further orovides that: .' "The United States will continue to deliver to Hexico on the land boundary at San Luis and in the limitrophe section of the Colorado River downstream from Morelos Dam approximately 140,000 acre-feet (172,689,000 cubic meters) annually with a salinity substantially the same as that of waters customarily delivered there."