California reports steady groundwater levels, fewer dry wells, and expanded monitoring as the state celebrates a decade under Sustainable Groundwater Management Act.

A new Utah bill would let landowners own the heat beneath their land while requiring water rights for geothermal energy production.

Heavy tropical rains drenched Arizona, Colorado, and Utah, bringing major drought relief while other western states remain mostly dry.

Native fish are making a remarkable comeback across the West, from Oregon’s Klamath River to Arizona’s mountain streams. Landmark dam removals, Tribal partnerships, and wildlife management are...

A University of Arizona study finds human groundwater pumping has doubled natural drawdowns in Tucson’s aquifers over 20,000 years.

Nebraska and Colorado face off in the Supreme Court over South Platte River water rights and a long-delayed canal first promised a century ago.