WSP08022 - Laserfiche WebLink

Home Browse Search

e 3 e 2) The average salinities of the waters of the Colorado River a) upstream of Morelos Dam; b) arriving at Imperial Dam; and c) the resulting salinity differential were as follows: Total Dissolved Solids in ppm !/ 1988 U.S. Count ----Mexican Count Waters a) Colorado River upstream of Morelos Dam b) Arriving at Imperial Dam c) Salinity Differential 733 655 78 789 170 79 The Commission agreed by exchange of letters that the records show that the differential during calendar year 1988 was in accord with above cited 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: Salinity in ppm (U.S. Count) Year Impe rial Dam Above Morelos Dam Differential 1974 (June 25 to Decembe r 31) 832 972 140 1975 829 964 135 1976 823 955 132 1977 820 943 123 1978 812 928 116 1979 809 739 -70 1980 755 740 -15 1981 806 924 118 1982 825 933 108 1983 733 742 9 1984 670 676 6 1985 607 639 32 1986 579 600 21 1987 610 656 46 1988 655 733 78 The results of operations under Minute 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 by the United States to effect the agreed upon salinity differential pending completion and operation of a desalting project, consists of discharging of all Wellton-Mohawk drainage waters by means of a bypass channel to the Santa Clara Slough on the Gulf of California and 11 The difference 1n U.S. count and Mexican count are due to the use of different methods of analyses and of computing the total dissolved solids, by each country's laboratory.