North Fork San Gabriel River

North Fork San Gabriel River
Location of the North Fork in California
Location
CountryUnited States
StateCalifornia
Physical characteristics
SourceNear Falling Springs
  locationAngeles National Forest, San Gabriel Mountains
  coordinates34°17′27″N 117°50′25″W / 34.29083°N 117.84028°W / 34.29083; -117.84028
  elevation3,275 ft (998 m)
MouthWest Fork San Gabriel River
  location
Near San Gabriel Reservoir
  coordinates
34°14′29″N 117°52′08″W / 34.24139°N 117.86889°W / 34.24139; -117.86889
  elevation
1,552 ft (473 m)
Length4.5 mi (7.2 km)
Basin size18.6 sq mi (48 km2)
Discharge 
  locationCamp Rincon, near the mouth
  average6.6 cu ft/s (0.19 m3/s)
  minimum1.16 cu ft/s (0.033 m3/s)
  maximum276 cu ft/s (7.8 m3/s)

The North Fork San Gabriel River is a tributary, 4.5 miles (7.2 km) long, of the West Fork San Gabriel River in the Angeles National Forest of Los Angeles County, California. The river originates at the confluence of Soldier Creek and Coldbrook Creek in the San Gabriel Mountains below the village of Falling Springs and flows down a steep canyon in a southerly direction to join the West Fork near San Gabriel Reservoir. The North Fork Canyon provides the route for SR 39, one of the main access roads to the Angeles Forest.

Crystal Lake, the only natural lake in the San Gabriel Mountains, is located above the headwaters of the North Fork in the Crystal Lake Recreation Area at an elevation of 5,600 feet (1,700 m). The area has campsites, trails and picnic areas and is one of the more popular sites in the Angeles National Forest.