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<br />The annual average salinities ofthe waters arriving at Imperial Dam since 1951, the first full year
<br />of deliveries to Mexico under the 1944 Water Treaty, and of the waters made available to Mexico
<br />at the Northerly International Boundary since 1958 are graphically shown on Exhibit 2, which
<br />shows the effect of operations under Minute No. 242. The interim measure adopted by the United
<br />States to effect the agreed upon salinity differential, pending completion and operation of desalting
<br />projects, consists of discharging all Wellton-Mohawk drainage waters into a bypass channel to
<br />convey them to the Santa Clara Slough on the Gulf of California, and substituting for such waters
<br />an equal volume of other waters. The quantities of Well ton-Mohawk drainage waters discharged
<br />and substituted for by other waters for the deliveries to Mexico under Minute No. 242, since it
<br />became effective on June 24, 1974, are tabulated as follows:
<br />
<br /> ANNUAL VOLUME DISCHARGED
<br /> YEAR [THOUSAND CUBIC METERS) (ACRE-FEET)
<br /> 1974 (Jun 25 - Dee 31) 140,180 113,645
<br /> 1975 264,866 214,729
<br /> 1976 253,353 205,395
<br /> 1977 255,113 206,822
<br />- - - - . J278 . - - _. _ 22~,5~0__ - - - - - - . --- -- -~ -- . 182,036 _ - _.._."-~
<br /> 1979 219,472 177,928
<br /> 1980 190,735 154,630
<br /> 1981 183,082 148,426
<br /> 1982 184,651 149,698
<br /> 1983 220,988 · 179,157 ·
<br /> 1984 154,944 .. 125,615 ..
<br /> 1985 159,987 129,704
<br /> 1986 135,747 110,052
<br /> 1987 120,562 97,741
<br /> 1988 158,103 - - - ~J2M7_6_ ___n _ __
<br /> 1989 170,990 138,624
<br /> 1990 164,900 133,690
<br /> 1991 173,583 140,726
<br /> 1992 124,716 101,109
<br /> 1993 75,784 ... 61,439."
<br /> 1994 156,477 124,435
<br /> 1995 154,772 125,475
<br /> 1996 138,632 112,390
<br /> 1007 100071 !!9.155
<br />
<br />* This includes an undetermined amount of flood waters due to breaks in a bypass canal levee in
<br />the United States.
<br />** Includes Gila River water.
<br />*** The low flows are due to damage on the drainage canal caused by Gila River flood waters. Drainage
<br />waters entered the Gila River from 02/21/93 to 01/18/94 and were diluted by the high flows.
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