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<br />territory within five miles (eight kilometers) of the Arizona-Sonora
<br />boundary near San Luis to 160,000 acre-feet (197,358,000 cubic
<br />meters) annually."
<br />
<br />In 1996, Mexico's pumping from its San Luis Mesa well field located within eight kilometers (five
<br />miles) ofthe boundary near San Luis amounted to 81,039,000 cubic meters (65,699 acre-feet). The
<br />annual volumes pumped from 1975 through 1996 are tabulated as follows:
<br />
<br /> ANNUAL VOLUME PUMPED
<br />YEAR (THOUSAND CUBIC METERS) (ACRE-FEET)
<br />1975 131,030 106,227
<br />1976 120,722 97,870
<br />1977 159,905 129,636
<br />1978 121,172 98,235
<br />1979 29,063 23,562
<br />1980 17,735 14,378
<br />1981 148,742 120,586
<br />1982- ' 162,498 131,738
<br />1983 22,437 18,190
<br />1984 8,963 7,266
<br />1985 37,373 30,299
<br />1986 13,308 10,789
<br />1987 64,453 52,253
<br />1988 157,374 127,585
<br />1989 173,551 140,700
<br />1990 167,848 136,077
<br />1991 153,227 124,223
<br />1992 81,374 65,971
<br />______________4_ _ - - ~ - - - - - - - - ------------ - - - - - - - 5,867-. - - - - - -. - .
<br />1993 7,237 ·
<br />1994 76,281 61,841
<br />1995 48,830 39,587
<br />1996 81039 65 699
<br />
<br />* The reduced pumping was due to excess delivery from the Gila River flood flows.
<br />
<br />The U.S. Bureau of Reclamation has completed 21 of the allowed 35 wells on the United States side,
<br />all located within eight kilometers (five miles) ofthe Arizona-Sonora boundary near San Luis, for
<br />protective and regulatory pumping. Of the 21 wells, 14 were pumped during 1996 for municipal and
<br />irrigation uses. Construction of the remaining 14 allowed wells has been deferred until additional
<br />water supply needs make it necessary.
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