South Fork San Joaquin River

South Fork San Joaquin River
South Fork below Florence Lake
Location of South Fork San Joaquin River in California
Location
CountryUnited States
StateCalifornia
Physical characteristics
SourceMartha Lake (California)
  locationKings Canyon National Park
  coordinates37°05′39″N 118°43′16″W / 37.09417°N 118.72111°W / 37.09417; -118.72111
  elevation11,010 ft (3,360 m)
MouthSan Joaquin River
  location
Ansel Adams Wilderness
  coordinates
37°26′13″N 119°14′36″W / 37.43694°N 119.24333°W / 37.43694; -119.24333
  elevation
3,704 ft (1,129 m)
Length48 mi (77 km)
Discharge 
  locationHoffman Meadow
  average456 cu ft/s (12.9 m3/s)
  minimum8.5 cu ft/s (0.24 m3/s)
  maximum5,930 cu ft/s (168 m3/s)

The South Fork San Joaquin River is the largest headwater of the San Joaquin River in central California, United States. About 48 miles (77 km) long, it drains an area of the high Sierra Nevada about 60 miles (97 km) northeast of Fresno.