Background Santa Ana speckled dace were once found throughout river systems in the foothills of Southern California mountain ranges. These fish require perennial streams fed by cool springs, with ...

Five rivers that begin and end in Southern California and drain into the Pacific Ocean have made big impacts, columnist Mark Landis writes.

Fires could encroach on critical habitat for the endangered Southern California mountain yellow legged frog.

Critics say a utility corridor designed to move renewable energy across Arizona would further damage one of the state's most important riparian areas.

As the Trump administration continues to gut federal funding for some of California's most unique parks and natural landscapes, state officials are moving to protect critical habitat for rare ...

On Sunday, June 29, a group of paddlers will embark on a demanding 16-mile portage around Southern California Edison’s Kern River No. 3 Hydroelectric Project.

U.S. designates several Southern Arizona watersheds as critical habitat for the threatened western yellow-billed cuckoo and the northern Mexican gartersnake.

The San Dieguito River Valley Conservancy received a $1.5 million grant from the California Wildlife Conservation Board to restore 12.5 acres of riparian habitat in Rancho Santa Fe.

While trees are great at scrubbing carbon dioxide from the atmosphere, so are shrublands, grasslands, deserts and riparian corridors — and their value is overlooked.

The conservation area in Ventura County, also known as Rancho Cañada Larga, is a biologically rich region lined with riparian habitat, coastal sage scrub, native grasslands, oak and chaparral.