Temecula Canyon, Santa Margarita River, Riverside and San Diego Counties, California Temecula Canyon Santa Margarita River Riverside and San Diego Counties, California Article and photos by Charles Foster Granite domes frame the gorge. Bedrock rapids stair-step into big pools.
Waterfalls tumble down steep canyon walls.
A beaver slaps his tail and dives out of sight. Keith Beck nabs the first boof of the day. Driving along I-15 out of San Diego one wouldn't expect decent whitewater for hundreds of miles. Here Temecula and Murrieta Creeks combine to create the Santa Margarita River. This carves its way through the southern margin of the Santa Margarita Mountains.