Federal officials told regional water managers last week not to plan on coordinated reservoir releases this spring to help endangered fish in the Colorado River near Grand Junction as there’s likely not going to be enough water.

Bureau of Reclamation, Lower Colorado Region. Another dry year in the Colorado River Basin increases the need for additional state and federal actions

Water can’t be used if it cannot get to where it’s needed. Historically, Arizona did not use its full share of the Colorado River, instead drawing water from the Gila River, a Colorado tributary.

The Colorado River is one of the principal rivers of the Southwestern United States and northern Mexico (the other being the Rio Grande).The 1,450-mile-long (2,330 km) river drains an expansive, arid watershed that encompasses …

A viaduct system brings in water from the Colorado River near Yuma, Arizona.Ken Cedeno/Corbis via Getty Images With the potential of a Colorado River shortage declaration looming as Lake Mead drops, Arizona is struggling with the politics of who will have to cut their water use, and by how much. As

The Colorado River Compact is a 1922 agreement among seven U.S. states in the basin of the Colorado River in the American Southwest governing the allocation of the water rights to the river’s water among the parties of the interstate compact.

Colorado River Indian Tribal officials face a recall election over talks to lease river water to places including Tucson, rather than keep it on the reservation.

Colorado River: Colorado River, major river of North America, rising in the Rocky Mountains of Colorado, U.S., and flowing generally west and south for 1,450 miles (2,330 kilometres) into the Gulf of California in northwestern Mexico.

Tension over the drought-stressed Colorado River escalated into a public feud when four U.S. states accused Arizona’s largest water provider of manipulating supply and demand, potentially threatening millions of people in the United States and Mexico who rely on the river. The four states

The Metropolitan Water District owns and operates the 242-mile Colorado River Aqueduct, which stretches Lake Havasu, Arizona to its terminal reservoir at Lake Mathews near Riverside.