Water treaty between #Mexico and U.S. faces biggest test in 80 years — National Public Radio #RioGrande #ColoradoRiver #COriver #aridification

Rio Grande in Albuquerque, Aug. 4, 2023. Photo by John Fleck

Click the link to read the article on the National Public Radio website (Bria Suggs). Here’s an excerpt:

August 16, 2024

Eighty years ago, the United States and Mexico worked out an arrangement to share water from the two major rivers that run through both countries: the Rio Grande and the Colorado. The treaty was created when water wasn’t as scarce as it is now. Water from Mexico flows to Texas’ half-billion-dollar citrus industry and dozens of cities near the border. On the Mexican side, some border states like Baja California and Chihuahua are heavily reliant on the water that comes from the American side of the Colorado River.

Now, those water-sharing systems are facing one of the biggest tests in their history. Mexico is some 265 billion gallons of water behind on its deliveries to the United States. Unpredictable weather patterns due to climate change, growing populations, aging infrastructure and significant water waste have left both countries strapped for water and have escalated tensions along the border. Maria-Elena Giner is the U.S. commissioner of the International Boundary and Water Commission, the binational agency that oversees the 1944 water treaty and settles disputes. Mexico is “at their lowest levels ever” in the treaty’s history, Giner said. The treaty operates in five-year cycles, and the current deadline for deliveries isn’t until October 2025.

But “the question is that they’re so far behind, it will be very difficult, if not statistically impossible, for them to make up that difference,” Giner said…

To address the water scarcity in Texas, officials last year proposed a solution: a treaty “minute,” or amendment, that would allow Mexico to pay water directly to South Texas instead of giving two-thirds to the Mexican state of Tamaulipas first, as currently specified in the treaty. But quenching the thirst in South Texas ahead of its own citizens was likely a nonstarter ahead of Mexico’s presidential election this year. Negotiations on the treaty changes were completed and both countries were set to sign last December, but Mexico has yet to receive official authorization to do so, said Giner, of the International Boundary and Water Commission.

Rio Grande and Pecos River basins. Map credit: By Kmusser – Own work, Elevation data from SRTM, drainage basin from GTOPO [1], U.S. stream from the National Atlas [2], all other features from Vector Map., CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=11218868

Leave a Reply