A decadelong battle between Texas and New Mexico over the future of the water in the Rio Grande might have an end in sight. But the proposed resolution has opponents that include the U.S.

The Rio Grande Compact—signed in 1938 between Colorado, New Mexico and Texas—sealed the river’s fate. The compact ensured that farmers in all three states would get their share of water.

Jim Darling, chair of the Rio Grande Regional Water Planning Group and former McAllen mayor, points at rivers and tributaries shown on a map at the South McAllen Water Plant, in McAllen, on Monday.

Texas brought the suit in 2013, arguing that groundwater pumping in this stretch of New Mexico siphoned off water destined for Texas under the Rio Grande Compact. The United States and Colorado ...

Longtime Harlingen resident Victoria Rafols, left, blesses Texas Gov. Greg Abbott during a door-knocking campaign event on Saturday, Oct. 1, 2022. Once an area so blue that general elections were ...

EDINBURG — The Rio Grande is no longer a reliable source of water for South Texas. That’s the sobering conclusion Rio Grande Valley officials are facing as water levels at the international ...