A weather system could bring catastrophic flooding across four states, beginning on Wednesday amid rounds of heavy rainfall.

Flooding could quickly become dangerous and even life-threatening as the surge of moisture saturates area rivers, creeks and streams. Major rivers expecting significant water level rises include the ...

UCLA researchers say California and other states aren't recycling enough water. They recommend reusing much more to ease ...

Rivers join downstream, flow downhill, and eventually meet an ocean or terminal lake: These are fundamental rules of how ...

A plan to alter the Clean Water Act’s definition of wetlands could render vast areas of the state essentially unprotected ...

A big shift in one of the most reliable weather forecast models for Northern California has prompted a significant change in the forecast for the region next week. For the past couple of days, the ...

Robyn Colosimo, senior official performing the duties of the assistant secretary of the Army for Civil Works, visited three ...