Santa Ana speckled dace have been eliminated from most of the Los Angeles River basin, including tributaries Little Tujunga Creek, Pacoima Creek and Santa Anita Canyon Creek.

Santa Ana River (Orange County): The same 1938 storm that devastated Los Angeles and caused the transformation of the L.A. River also wrought havoc in Orange County, where the Santa Ana River ...

But for what it is. Now. No, the Santa Ana River will never be a Kern, Columbia, Colorado or Mississippi river. It does not thunder from vast mountain gorges. Huge barges do not float down its ...

The Santa Ana River Watershed Basin Study, which addresses water supply and demand projections for the next 50 years and identifies potential climate change impacts to Southern California's Santa ...

Still, the extensive alteration of the river by people could yield a wealth of scientific insight. “The Santa Ana basin provides an example of a highly urbanized watershed,” he said.

Adapted to the boom-and-bust flood cycles of Southern California's rivers, the Santa Ana sucker now finds itself smack in the middle of one of the most urbanized places in North America. With its ...

A habitat conservation plan eight years in the making intends to nearly double the amount of water for the Inland Empire, while saving the Santa Ana sucker fish from extinction.

A heron carries a rainbow fish after catching it from the water at the Santa Ana River Lakes in Anaheim on Jan. 9. Several species of birds and other wildlife surround the area.

SANTA YNEZ, Calif.- 5.5 million dollars in state funding is being invested into local water reservoirs. The grant will help secure sustainable groundwater levels for the Santa Ynez River Valley ...

Off-leash dogs are putting at risk the survival of the endangered California least tern and threatened western snowy plover at their habitat at the Santa Ana River mouth, experts say.

The Santa Ana winds and the accompanying wildfires have been a part of the ecosystems of the Los Angeles basin for over 5,000 years, since native peoples moved into the area.

A habitat conservation plan eight years in the making intends to nearly double the amount of water for the Inland Empire, while saving the Santa Ana sucker fish from extinction.