Little Rock Creek (Los Angeles County, California)

Little Rock Creek
View to south over reservoir into Little Rock Creek Watershed
Location
CountryUnited States
StateCalifornia
RegionLos Angeles County
CitiesLittlerock, Palmdale
Physical characteristics
SourceMount Williamson
 • locationSan Gabriel Mountains
 • coordinates34°22′16″N 117°51′35″W / 34.37111°N 117.85972°W / 34.37111; -117.85972
 • elevation8,000 ft (2,400 m)
MouthLittle Rock Reservoir
 • coordinates
34°28′09″N 118°01′11″W / 34.46917°N 118.01972°W / 34.46917; -118.01972
 • elevation
3,268 ft (996 m)
Basin features
Tributaries 
 • leftSouth Fork Little Rock Creek, Santiago Canyon Creek

Little Rock Creek is a 16.7-mile (26.9 km) northwestward-flowing stream in the San Gabriel Mountains and Mojave Desert, within northern Los Angeles County, California.

Its headwaters are in the Angeles National Forest, just west of Mount Williamson peak. Downstream the creek enters Little Rock Reservoir, impounded by Little Rock Dam. After released there it flows through Little Rock Wash into the Antelope Valley of the western Mojave Desert.

The California Office of Environmental Health Hazard Assessment has issued a safe eating advisory for any fish caught in Little Rock Reservoir due to elevated levels of mercury and PCBs.