In late May, as the outside temperature approached 100 degrees, Arizona’s top water policy officials gathered in an air-conditioned Phoenix conference room. Their purpose that day was to decide ...

Giant dams built to conserve the Colorado River have nearly wiped out nearby native cottonwood trees, causing big ecosystem disruption. Tiny dams built to mimic those built by beavers could bring them ...

A new book about water management on the Colorado River offers treasures for at least four semi-distinct groups of readers: avid outdoor adventurers (particularly dusty river runner types); students ...

Representatives of California, Arizona and Nevada are urging the Trump administration to take a different approach in confronting the problems of the water-starved Colorado River. As Trump’s ...

A federal district court judge ruled last week that the U.S. Army Corps of Engineers violated the National Environmental Protection Act and the Clean Water Act when it approved expanding a Colorado ...

The hourglass is running out of sand when it comes to solving the crisis on the Colorado River, but a group of states sees an opportunity: a new administration. In a letter sent to Interior Secretary ...

Giant dams built to tame the Colorado River have nearly wiped out native cottonwood trees along many riverbanks, disrupting local ecosystems. But new tiny dams, built to mimic ones that beavers make, ...

Hydropower output at Hoover Dam is down by about half since 2000. Lakes Mead and Powell are approaching critical thresholds below which hydropower generation would be severely curtailed or cease.