The concentration of cyanotoxins was found to be at the “high end of safe exposure levels” in the Antelope Canyon portion of ...

Though it's a vital part of Colorado's ecosystem and draws millions of visitors annually, this manmade lake controversially replaced a "lost national park." ...

The river also serves Mexico and more than two dozen Native American tribes, produces hydropower, and supplies water to farms ...

The seven states that share the Colorado River are floating a new concept for how water could be shared in the future, ...

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 ...

While snowpack was 92% of average, only 54% of average runoff made it into Lake Powell. Central Arizona Project Analyst Nolie ...

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

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

Bleak projections for Lake Mead show the nation’s largest reservoir dropping to a new low in less than a year and a half, and plunging 11 feet below that by May 2027.

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

Lake Powell has been called “Jewel of the Colorado” by the federal agency that built it, the Bureau of Reclamation. It’s been a vital force for the intermountain West because of its ability ...

As Colorado River stakeholders scramble to negotiate the basin’s long-term operational guidelines, the Trump administration ...