California snowpack numbers on April 1 provide critical information for water managers as Sierra snowpack historically peaks and begins melting, filling reservoirs.

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

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 ...

There are also several areas considered hotspots for coastal sinking. "By 2050, sea levels in California are expected to increase to between 6 and 14.5 inches (15 and 37 centimeters) higher than ...

The California Department of Forestry and Fire Protection released new fire-hazard severity maps Monday that added thousands of acres within the purview of local fire departments across ...

Ford Mustang Mach-E and Ford F-150 Lightning customers that use the Apple Maps EV Routing feature in CarPlay can now be automatically routed to EV chargers that use the North American Charging ...

Sacramento, Amador, Calaveras and Tuolumne counties are represented in the new maps. The next phase of updated California Fire Hazard Severity Zones, which assess the likelihood of wildfire ...

Known as the California Delta, the estuary is among the state’s most important sources of water — and most consistent flashpoints over environmental protection. Donald Trump first saw the ...

When it happened, the late-January release of around 2.2 billion gallons from California reservoirs already seemed strange, ill-advised and abrupt. But a new report from the Washington Post ...