The high risk of mudslides prompted evacuation orders Thursday for some Los Angeles neighborhoods ravaged by recent wildfires ...

REFLECTING INTENSIFYING WILDFIRES and updated science, new state maps designate more than 2.3 million acres of local land in ...

The Wastewater Surveillance Act, if passed, would require at least one wastewater monitoring site in every California county.

NASA scientists used satellite measurements to map out local subsidence and uplift across the Golden State, which plays into ...

The National Weather Service issued a winter storm watch for the Willamette Valley for snow and ice Thursday and Friday.

Whether it’s rain, wind or snow, the Central Valley is bracing for impact as an atmospheric river is rolling through. “This ...

Crews have rushed to clear out basins designed to catch mud, rocks and other debris from tumbling into neighborhoods as ...

In some areas, hazards have surged. Buildings in the highest hazard zones will be subject to the strictest fire-resiliency ...