The Santa Ana River, born of snowmelt and natural springs near Big Bear Lake, flows through Southern California as one of the region’s most scenic rivers — until it hits Orange County.

So the U.S. Army Corps of Engineers creating the concrete-lined channel of the L.A. River to mitigate future floods. Santa Ana River (Orange ... the Ventura River flows through Foster Park.

The cast made the shuffling seem especially alarming, but Mitchell, the author of a new book about the 110-mile, meandering, misunderstood Santa Ana ... river at that point,” he says. It flows ...

The rivers in Southern California are an enigma, and by some observer’s standards, their meager, seasonal flows wouldn ... 10 times larger than the Santa Ana River, which is the largest ...

THREATS: Urbanization and water extraction are the foremost threats to the Santa Ana sucker. The four river systems that are home to this fish all flow through the expanding urban sprawl of the ...