Arizona will again go without 18% of its total Colorado River allocation, while Mexico loses 5%. The reduction for Nevada — ...

The Colorado River is in an "unprecedented drought," putting pressure on state leaders and limiting recreation access for ...

For more than a century, a collection of deals, treaties and legal agreements have divided up the Colorado River’s water, a ...

Arizona is tussling with other states over how much of the Colorado River it should receive. But how will Arizonans divide its share internally?

New data from the Bureau of Reclamation puts the river and its reservoirs in formal shortage conditions. Policymakers are ...

After one of the Colorado River’s driest years in decades, Lake Mead and Lake Powell — the largest reservoirs in the country ...

Arizona's Colorado River shortages will continue in 2026, but dry conditions and expiring agreements pose more uncertainty.

Arizona will again live with less water from the Colorado River as drought lingers in the West, federal officials announced ...

Arizona, Nevada and Mexico will be subject to substantial cuts from their Colorado River allocations for the third year in a ...

Federal officials are expected to project next year's water shortage on Aug. 15. Arizona doesn't expect to lose more until at ...

Long-standing water-use agreements allocate more water than the river and its basin actually contain, forcing users to cut ...

Two people drowned Aug. 3 in the Colorado River, including a 32-year-old man from Tempe. They had gone into the water to cool off during a pontoon boat outing, according to law enforcement authorities ...