International Boundary Water Commission: #Mexico must take immediate action to meet treaty obligations #RioGrande #aridification

Here’s the release from the IBWC:

U.S. Commissioner Jayne Harkins of the International Boundary and Water Commission, United States and Mexico, today reiterated that Mexico must take immediate action to deliver Rio Grande water to the United States to comply with the bilateral 1944 Water Treaty. Under the treaty, Rio Grande water is allotted to the United States in quantities calculated based on cycles of five years. The current cycle ends on October 24, 2020. To meet its international obligations, Mexico must deliver an additional 416,829 acre-feet (514.2 million cubic meters [mcm]) to the United States between now and the end of the cycle.

“Mexican government officials have stated there is enough water stored in the Mexican reservoirs to enable Mexico to meet the needs of Chihuahua farmers during this year’s irrigation season while complying with the treaty. They need to increase their water releases to the United States immediately,” said Commissioner Harkins. “Mexico has failed to implement releases promised earlier and continuing to delay increases the risk of Mexico failing to meet its delivery obligation.”

Commissioner Emily Lindley of the Texas Commission on Environmental Quality said, “Mexico has not honored its commitments. Texas farmers, irrigators, municipalities, and industries along the Rio Grande rely on water that should be delivered as laid out in the 1944 Treaty. I echo Commissioner Harkins that it is vital Mexico deliver water immediately to the U.S.”

Mexico has only delivered 1,333,171 acre-feet (1,644 mcm) out of the minimum five- year obligation of 1,750,000 acre-feet (2,159 mcm). The remaining volume yet to be delivered exceeds the 350,000 acre-feet (431.7 mcm) minimum average volume the 1944 Water Treaty requires over an entire year, demonstrating that immediate action is required.

“I want to emphasize that farmers and cities in South Texas rely on this water to get them through the summer,” Commissioner Harkins added.

Under the 1944 Water Treaty, Mexico delivers Rio Grande water to the United States while the United States delivers Colorado River water to Mexico. The United States continues to meet its obligations to deliver Colorado River water and expects Mexico to fulfill its Rio Grande obligations to the United States. The International Boundary and Water Commission is responsible for applying the boundary and water treaties between the United States and Mexico.

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

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