Water Facts - American River Watershed
- 40% of the water supply comes from snowfall. Precipitation varies within the watershed from 25 to 80 inches annually. 40% of the river's flow comes down the Middle Fork. 40% of the river's flow comes down the South Fork. 20% of the river's flow comes down the North Fork. The 13 largest reservoirs in the watershed store a combined 1.9 million acre feet of water.
- Folsom Lake is the largest reservoir in the watershed.
