Water Wars Erupt Along Rio Grande

By , Special to The Christian Science Monitor

TEXAS farmers, river rafters, and environmentalists are frothing over a Rio Grande water shortage caused by Mexican farmers upstream siphoning off the scarce resource.

Thousands of farmers in northern Mexico are struggling through a three-year drought that has killed 300,000 cattle and withered nearly a million acres of crops. The Mexican government says it needs the water to prevent further devastation.

But critics on both sides of the border say Mexico's problems spring from poor planning. When Mexican officials made a request to the United States Department of State for a water loan last week, Texas Gov. George W. Bush was quick to speak out against the loan.

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''Texas will not support a loan of Texas water to Mexico, as this would jeopardize the welfare of many of our citizens,'' the governor wrote in a May 4 letter to the International Boundary & Water Commission (IBWC), a joint US-Mexican monitoring agency. Growers in the Texas Rio Grande valley, who produce more than $300 million worth of citrus, sugar cane, and vegetables, depend heavily on the river for irrigation, he said.

Since the two neighbors signed a treaty in 1944, Mexico and the US have shared the use of water from reservoirs along the Rio Grande. This year, Mexico has used already 90 percent of its allotment and is estimated to have only two weeks of water left.

Texas farmers are not in bad shape yet, says Bill Weeks of the Texas Citrus and Vegetable Association in Harlingen. ''But if we don't get some rain over the next few months, we will be in trouble.''

Rafting outfitters near Big Bend National Park have been less fortunate. ''We're doing less than one-tenth of what we usually do,'' says Pierre de Koninck, who runs a river shuttle service in Terlingua, Texas. Some river outfitters have closed shop and moved to Colorado for the summer.

The river is at the ''beginning of a crisis,'' says Salvador Contreras, a recently retired conservation biologist at the University of Nuevo Leon in Monterrey, Mexico.

The drought is exacerbating salinity problems in the Rio Grande, killing fish and other fauna that live in the river. ''And it will get worse as more and more water in the middle part of river is used in agriculture.''

Most of the water is drawn from two lakes: Amistad Reservoir and Falcon Reservoir. Because each nation takes as much as it contributes each year in runoff, the US has 1.7 million acre feet of water in the lakes. Mexico has about 113,000 acre feet. That's enough water for domestic and municipal needs, says Texas Secretary of State Tony Garza, but not enough for Mexico's agricultural needs.

Still, Texas opposition to a water loan may do little to stop Mexican farmers from helping themselves. There have been many reports of illegal pumping, but the IBWC has no law-enforcement personnel.

The current drought highlights the lack of a regional water policy, which may soon brake the explosive economic development along the border. ''Demands on the water supply have grown exponentially,'' Mr. Garza says, ''while the supply has remained level.''

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