American River River Levels

Last Updated: December 4, 2025

The American River is a major waterway in California, running for approximately 120 miles from the Sierra Nevada Mountains to the Sacramento River.


Summary

Total streamflow across the American River was last observed at 989 cfs, and is expected to yield approximately 1,962 acre-ft of water today; about 55% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 1,791 cfs, with recent peaks last observed on 2016-12-16 when daily discharge volume was observed at 36,208 cfs.

Maximum discharge along the river is currently at the American R A Fair Oaks Ca reporting a streamflow rate of 881 cfs. However, the streamgauge with the highest stage along the river is the American River Near Nile with a gauge stage of 72.46 ft. This river is monitored from 2 different streamgauging stations along the American River, the highest being situated at an altitude of 2,789 ft, the American River Near Nile.

River Details

Last Updated 2025-12-04
Discharge Volume 1,962 ACRE-FT
Streamflow 989.0 cfs
-26.0 cfs (-2.56%)
Percent of Normal 55.23%
Maximum 36,208.0 cfs
2016-12-16
Seasonal Avg 1,791 cfs
       
River Streamflow Levels
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
American River Near Nile
USGS 12488500
108 cfs 72.46 ft -1.82
American R A Fair Oaks Ca
USGS 11446500
881 cfs 5.97 ft -2.65
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile

The American River (Spanish: Río de los Americanos) is a 120-mile-long river in California that runs from the Sierra Nevada mountain range to its confluence with the Sacramento River in the Sacramento Valley. 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 the North Fork American River, the Middle Fork American River, and the South Fork American River.
The American river is known for the discovery of gold at Coloma in 1848 that started the California Gold Rush and contributed to the initial large-scale settlement of California by European immigrants. 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.