Two California groups sue the state over Delta water diversions, alleging violations of water laws and failures to protect fish, farms, and waterways.

Fifteen California libraries will offer water conservation, seed lending, recycling and climate education programs during 2026 and 2027.

New research finds the Upper Colorado River Basin lost 4.6 trillion gallons of groundwater during drought, nearly twice the Lower Basin's losses.

Great Salt Lake has fallen to 30.1% of its natural volume, exposing more than half its lakebed as Utah faces mounting restoration challenges.

New Forest Service rules shorten public comment periods and change how objections to national forest projects are reviewed.

The Sierra Club alleges San Francisco inflated water demand forecasts, raising concerns about river ecosystems, public spending, and rising water bills.