American River

American River
The American River at Folsom
Map of the American River watershed. It includes the North, Middle, and South forks of the river as well as Rubicon River, a tributary of the Middle Fork.
Location
CountryUnited States
StateCalifornia
RegionSacramento Valley
CitySacramento
Physical characteristics
SourceNorth Fork American River
  locationMountain Meadow Lake, Placer County, CA
  coordinates39°13′04″N 120°16′28″W / 39.21778°N 120.27444°W / 39.21778; -120.27444
  elevation7,923 ft (2,415 m)
2nd sourceSouth Fork American River
  locationNebelhorn, El Dorado County
  coordinates38°48′38″N 120°01′52″W / 38.81056°N 120.03111°W / 38.81056; -120.03111
  elevation7,401 ft (2,256 m)
Source confluenceFolsom Lake
  locationNear Folsom, California
  coordinates38°29′28″N 121°09′24″W / 38.49111°N 121.15667°W / 38.49111; -121.15667
  elevation253 ft (77 m)
MouthSacramento River
  location
Sacramento, CA
  coordinates
38°35′51″N 121°30′29″W / 38.59750°N 121.50806°W / 38.59750; -121.50806
  elevation
10 ft (3.0 m)
Length119 mi (192 km), Northeast-southwestMain stem 31 miles (50 km); North Fork 88 miles (142 km)
Basin size2,150 sq mi (5,600 km2)
Discharge 
  locationFair Oaks
  average3,685 cu ft/s (104.3 m3/s)
  minimum215 cu ft/s (6.1 m3/s)
  maximum314,000 cu ft/s (8,900 m3/s)
Basin features
River systemSacramento River watershed
Tributaries 
  leftSouth Fork American River
  rightNorth Fork American River
TypeWild, Recreational
DesignatedNovember 10, 1978

The American River is a 30-mile-long (50 km) river in California that runs from the Sierra Nevada mountain range to its confluence with the Sacramento River in downtown Sacramento. Via the Sacramento River, it is part of the San Francisco Bay watershed. This river is fed by the melting snowpack of the Sierra Nevada and its many headwaters and tributaries, including its North, Middle, and South Forks.

The American River is known for the discovery of gold at Sutter's Mill in Coloma in 1848 that started the California Gold Rush and contributed to the initial large-scale settlement of California by white American migrants. Today, the river still has high quality water, and it is the main source of drinking water for Sacramento. This river is dammed extensively for irrigation, flood control, and hydroelectric power. The American River watershed supports Mediterranean, temperate, and montane ecosystems, and it is the home of a diverse array of fish and wildlife.