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

Levels of cyanotoxins that were on the "high end of safe exposure levels" were observed at the mouth of Antelope Canyon in ...

California and six other states that use water from the Colorado River are nearing a 2026 deadline to come up with new rules for sharing shrinking supplies.

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

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

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

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.

Here's what we know about the 17-year-old boy found dead after crashing his watercraft at Lake Havasu and how rescuers tried ...

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

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

The seven states that share the Colorado River are floating a new concept for how water could be shared in the future, marking forward progress after a long standoff between the Upper Basin and ...

A market-based approach to managing water in the Colorado River basin could provide more reliable supplies for farmers, ...