An "unprecedented" toxic algae bloom has overrun the coast of Southern California, sickening marine animals and staining the ...

California is one of the top fly-fishing destinations of the nation, especially when it comes to wild trout. But as climate ...

The Argo program collects data vital to global weather forecasting and developing seasonal scale forecasts like El Niño and La Niña, for producing drought forecasts across the U.S., and for mapping ...

The past six months have proven to be a tale of two Californias when it comes to atmospheric river events. While Northern ...

Las Arenitas is an artificial oasis that recycles used water from the border city of Mexicali to regenerate ecosystems in the ...

Drought conditions in most of California will worsen air quality and increase airborne particulates like dust and pollen.

Elevating the Tijuana River on our most endangered rivers list reflects that urgency," said Ann Willis, American Rivers' ...

A series of atmospheric river events during the winter and spring have caused reservoirs to swell to more than 118% than is ...

The Delta faces a funding crisis to repair and maintain levees. If ruptured, it could endanger half a million people and ...

A view of the California drought map as of April 10, 2025.

Atmospheric rivers are more common during the winter months, but officials are warning people not to let their guard down.

Atmospheric rivers are storms akin to rivers in the sky that dump massive amounts of rain and can cause flooding, trigger mudslides and result in loss of life and enormous property damage.