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<br />. <br /> <br />2 <br /> <br />. <br /> <br />. <br /> <br />2) The average salinities of the waters of the Colorado River a) upstream of <br />Morelos Dam; b) arriving st Imperial Dam; and c) the resulting salinity <br />differential were as follows: <br /> <br />Waters <br /> <br />Total Dissolved Solids in ppm Y <br />1986 <br />U.S. Count Mexican Count <br /> <br />a) Colorado River upstream of Morelos Dam <br />b) Arriving at Imperial Dam <br />c) Salinity Differential <br /> <br />600 <br />579 <br />21 <br /> <br />671 <br />661 <br />10 <br /> <br />The Commission agreed by exchange of letters that the records show that the <br />differential during calendar year 1986 was in accord with above cited Point 1 <br />of Minute No. 242. <br /> <br />The results of operations under Minute No. 242 since it became effective on <br />June 24, 1974, are tabulated as follows. <br /> <br /> Salinity in ppm (U.S. Count) <br /> Year Imperial Dam Above Morelos Dam Differential <br /> 1974 (June 25 to December 31) 832 972 140 <br /> 1975 829 964 135 <br /> 1976 823 955 132 <br /> 1977 820 943 123 <br /> 1978 812 928 116 <br />. 1979 809 739 -70 <br />1980 755 740 -15 <br /> 1981 806 924 118 <br /> 1982 825 933 108 <br /> 1983 733 742 9 <br /> 1984 670 676 6 <br /> 1985 607 639 32 <br /> 1986 579 600 21 <br /> <br />The results of operations under Minute No. 242 are shown graphically on <br />Exhibit 2, which also shows the salinity of the waters arriving at Imperial <br />Dam and of the waters made available to Mexico at the Northerly International <br />Boundary since 1951, the first full year of deliveries to Mexico under the <br />Water Treaty of 1944. <br /> <br />The interim measure adopted by the United States to effect the agreed upon <br />salinity differential pending completion and operation of a desalting project, <br />consists of discharging of all Wellton-Mohawk drainage waters by means of a <br />bypass channel to the Santa Clara Slough on the Gulf of California and <br /> <br />. <br /> <br />1/ The difference in U.S. count and Mexican count are due to the use of <br />different methods of analyses and of computing the total dissolved solids, <br />by each country's laboratory. <br />