The Trump administration has denied Mexico's request for Colorado River water for Tijuana — the first such denial in 81 years — alleging the country has broken the terms of a water agreement.

In addition to the seven states along the Colorado River, Native American tribes have been involved in the negotiations over the future of the water source for 40 million people.

The Colorado River Water Users Association concluded its three-day conference with a focus on providing conservation solutions to its members, including Mexico and 30 different Native American tribes.

The treaties that divided the river among seven states and Mexico allocated 7.5 million acre-feet of water per year for states in the river’s upper basin, including Colorado, Wyoming, Utah and ...

COLORADO RIVER DELTA, Mexico — For half a century, the Colorado River’s great dams and the 30 million people who siphon water from the reservoirs behind them have effectively killed ...

The U.S. Department of State said on Thursday that the United States will for the first time deny a non-treaty request by Mexico for a special delivery channel for Colorado River water to be ...

On the lower river, water is divided among Mexico and three U.S. states. Arizona receives 2.8 million acre-feet per year, California 4.4 million acre-feet and Nevada 300,000 acre-feet.

Since 1974, the seven Colorado River basin states — Arizona, California, Colorado, Nevada, New Mexico, Utah and Wyoming — have coordinated efforts to implement salinity control in the waterway ...

Arizona will have to decrease its water use by 512,000 acre-feet in 2025, and Nevada by 21,000 acre-feet. Mexico will have to cut its take from the Colorado River by 80,000 acre-feet. “We knew that ...

Arizona, Nevada and Mexico will continue to live with less water next year from the Colorado River after the U.S. government Thursday announced water cuts preserving the status quo.