An invasion of smallmouth bass from the Great Lakes region is spreading to new areas of the Colorado River in Arizona. The bass have already thwarted efforts to save threatened native ...

States that use Colorado River water need to agree on new rules for sharing it by 2026. If they don't, they will likely end ...

The Colorado River is known as one of the most spectacular rivers in the United States of America. It is a valuable source ...

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

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

State water leaders appear to be coalescing behind a new proposal for sharing the Colorado River after talks were stuck in a ...

A top Interior Department official told negotiators they must have a plan by Nov. 11 or face the federal government taking ...

Colorado Parks and Wildlife found a single zebra mussel veliger in the Grand River Park near New Castle. This is the first ...

The worst-case forecast has Lake Powell falling to low enough levels by the end of next year to halt electricity production ...

Ted Cooke helped Arizona and the Central Arizona Project strike previous deals on the Colorado River. Now he's tasked with ...

New details are emerging of what's being negotiated between the seven states who rely on the Colorado River — an "amicable ...

Applying a market-based approach to Colorado River management could ensure more robust and reliable supplies for farmers, ...