An aerial view of the Colorado River delta meeting the Cortés Sea at Valle de Mexicali, Mexico, on April 4, 2025. Since 2000, the Colorado River has faced an extended drought, heavily straining regional water supplies. Guillermo Arias/AFP via Getty Images
Mexico’s delinquent water deliveries, in violation of an 81-year-old treaty with the United States, have exposed years of “blind eye” policies, rapid population growth, and hydrological changes, according to an expert at the U.S. Army War College.
In response, the United States is now refusing Mexico’s request for water assistance amid a drought.