Deep Creek is a tributary of the Mojave River, 23.4 miles (37.7 km) long,[2] in San Bernardino County, California.

The source of Deep Creek is at an elevation of 7,512 feet (2,290 m), at the head of Little Green Valley in the San Bernardino Mountains.

The confluence is located 10 miles (16 km) southeast of Hesperia, directly behind Mojave Forks Dam, a flood-control structure built in 1974.

For most of its length it is a remote, swift-flowing mountain stream, with a riverbed characterized by "deep pools and boulder strewn reaches".

At lower elevations, where the drainage approaches the Mojave Desert, the dominant vegetation type is chaparral, and creosote bush, chamise and California buckwheat are common.