Folsom Lake water level
American River · California · operated by USBR (Folsom Dam)
By Mike, independent developer behind zovo.one. Readings pulled live from the same CDEC feed the operator reports to.
Folsom Lake is 45% full as of Sep 20, 2026, per CDEC data; 57.7 ft below full pool.
At 408.27 ft, Folsom Lake is lower than 61% of Septembers in 42 years of daily record. Full Folsom Lake almanac, $19 → what is in it
Is that normal for the date?
At 408.27 ft, Folsom Lake is lower than 61% of Septembers in 42 years of daily record.
The median for this date across 42 years is 414.05 ft, so this is -5.78 ft against the lake’s own history. Placed on a quantile ladder built from 14,209 daily readings published by CDEC for site FOL, 1985-02-12 to 2026-08-06. This reservoir typically peaks in June and bottoms out in January.
How the level compares lately
Over the roughly 30-day series the gage fell 7.0 ft; the last 24 hours moved it down 0.1 ft. For readers outside the U.S., the surface is about 124.4 m above sea level.
Check any elevation yourself. Type a level in feet above sea level (a ramp cutoff, a marina mark) to see how far it sits below full pool and in meters.
About Folsom Lake
Going to Folsom Lake?
Recreation-booking links (charters, boat rentals) appear here once partner accounts are wired. See the disclosure page.
Where these numbers come from
Every figure on this page is recomputed in code from a public government feed, never typed by hand. The live elevation is a CDEC gage reading; feet below full pool, the operating-band gaps, the ~30-day change, and the meter conversion are all derived from that one validated reading and the published reference elevations. The reading is timestamped in the gauge above, and LakeLevelNow pulls the same feed the operator reports to.