The crisis is worse—significantly worse—than most realize. Roughly 15 million people depend on the Rio Grande for drinking water, and some of their taps could run dry as early as next year.

The Rio Grande basin is facing a severe water crisis driven by chronic overuse, agricultural demands, and long-term aridification caused by climate change. Roughly 15 million people rely on the river for drinking water and irrigation, but declining snowpack and depleted reservoirs—such as Lake Amistad and Falcon Lake—have brought the region to the brink of catastrophe, threatening municipal supplies in Texas and northern Mexico alike.

This scarcity has severely strained U.S.-Mexico relations under a fracturing 1944 water-sharing treaty, triggering violent civil unrest, including armed protests by Mexican farmers at the La Boquilla dam and devastating shortages in major urban areas like Monterrey. Although occasional severe storms have temporarily staved off total system collapse, experts warn that without sweeping structural changes to regional water management and agricultural use, the basin faces imminent and permanent "water bankruptcy."