A version of this story originally appeared at Big Pivots. The words “urgency” and “immediate action” were used by Trump ...

The Southwest and Rocky Mountain states are reviewing a plan that could split Colorado River water based on actual flows, not storage.

The Colorado River is the region’s main water source, but experts fear persistent drought related to climate change could close the spigot for many cities in the Western U.S., including Colorado ...

After 25 years of declining flows on the Colorado River, a new study led by University of Colorado researchers offers hope for a partial turnaround. River flows will most likely rise 5-7% in the ...

A new study shows that the Colorado River – the most important river in the American West – has seen its flow shrink by 20 percent compared to the last century from warming temperatures due to ...

The average annual flow of the Colorado River has decreased 19 percent compared to its 20th century average. Models predict that by 2100, the river flow could fall as much as 55 percent.

Warming in the 21st century reduced Colorado River flows by at least 0.5 million acre-feet, about the amount of water used by 2 million people for one year, according to new research. Climate ...

The Colorado River is a lifeline. It flows from the central Rocky Mountains of Colorado and Wyoming through five other U.S. states, 11 U.S. national parks and two Mexican states on a 1,450-mile ...

An extraordinary experiment is underway in a parched corner of northern Mexico where the Colorado River goes to die.

From inside a small airplane, tracing the Colorado River along the Arizona-California border, it’s easy to see how it happened.