How Fast Is Water Released From Folsom Dam Each Year Into the American River?

Outflow is measured in cubic feet per second, and volume varies significantly from year to year depending on water levels — as does the length of time during which water is released.

The data below shows yearly average outflow volume from Folsom Dam on the American River from May 22 to June 15, which is the beginning of recreation season in Sacramento County. *2024's data is currently incomplete and ends at June 2.