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<br />e <br /> <br />6 <br /> <br />e <br /> <br />Progress on United States Measures Provided for in Public Law 93-320 <br /> <br />Construction of the Yuma Desalting Plant is scheduled for completion by late <br />1991, according to the advice of the U.S. Bureau of Reclamation (USBR). <br /> <br />Groundwaters <br /> <br />Point 5 of Minute No. 242 provides that: <br /> <br />"Pending the conclusion by the Governments of the United States and Mexico <br />of a comprehensive agreement on groundwater in border areas, each country <br />shall limit pumping of groundwater in its territory within five miles <br />(eight kilometers) of the Arizona-Sonora Boundary near San Luis to 160,000 <br />acre-feet (197,358,000 cubic meters) annually." <br /> <br />In 1988, Mexico's pumping from its San Luis Mesa well field within five miles <br />(eight kilometers) of the boundary near San Luis amounted to 127,585 acre-feet <br />(157,374,000 cubic meters). The following quantities were pumped in calendar <br />years 1975 through 1988. <br /> <br /> Thousands of <br />Year Acre-Feet Cubic Meters <br />1975 106,227 131,030 <br />1976 97,870 120,722 <br />1977 129,636 159,905 <br />1978 98,235 121,112 <br />1979 23,562 29,063 <br />1980 14,378 17,735 <br />1981 120,586 148,742 <br />1982 131,738 162,498 <br />1983 18,190 22,437 <br />1984 7,266 8,963 <br />1985 30,299 37,373 <br />1986 10,789 13,308 <br />1987 52,253 64,453 <br />1988 127,585 157,374 <br /> <br />In 1988, Mexico increased its pumping rate to supplement gravity diversions to <br />serve its needs. <br /> <br />The USBR has completed 21 of 35 wells on the US side within five miles of the <br />Arizona-Sonora boundary near San Luis for protective and regulatory pumping <br />and 14 of the 21 wells were pumped in 1988. The remaining 14 wells have been <br />deferred until water supply needs make construction necessary. <br />