Folsom Dam · American River · California — updated daily from official gauges
Latest reading
Folsom Lake is 72.6% full as of — surface elevation 440.26 feet, storage 708,865 acre-feet (capacity basis 977,000 acre-feet).
That elevation is its highest July reading since 2023, and 93.10 feet above its record low of 347.16 ft (), in a daily record going back to October 1, 1985 (start of CDEC's daily record).
Storage is 111% of the July 23 average across 40 years of record.
Water level change: -5.00 ft over the past week, -19.48 ft over the past month, and +7.45 ft over the past year.
Percent full
72.6%
of 977,000 AF
Vs date average
111%
of the Jul 23 storage average since 1985
Elevation
440.26 ft
full pool 466.0 ft
Storage
708,865 AF
+70 KAF vs 1 yr ago
1-week change
-5.00 ft
elevation
1-year change
+7.45 ft
elevation
Folsom Lake vs its record low
In the daily record used by this site (going back to October 1, 1985 (start of CDEC's daily record)), Folsom Lake's lowest surface elevation was 347.16 feet on , when storage was 171,657 acre-feet. As of , Folsom Lake is at 440.26 feet — 93.10 feet above that record. The record high in the same series was 465.51 ft on .
Folsom Lake storage in context
Reading
Elevation (ft)
Storage (AF)
% full
Today (July 23, 2026)
440.26
708,865
72.6%
One year ago
432.81
639,024
65.4%
Five years ago
378.07
251,210
25.7%
Record low (November 3, 1988)
347.16
171,657
17.6%
Capacity basis
466.00
977,000
100.0%
Folsom Lake water level, past 12 months
Folsom Lake daily surface elevation (feet above sea level), past 12 months. Source: California DWR CDEC. Rendered at build time from the official gauge record — no JavaScript.
Folsom Lake elevation, full record
Folsom Lake month-end surface elevation, 1985–2026 — the full daily record fetched from California DWR CDEC, one point per month.
Last 14 daily readings
Date
Elevation (ft)
Day change
Storage (AF)
July 23, 2026
440.26
-0.68 ft
708,865
July 22, 2026
440.94
-0.69 ft
715,417
July 21, 2026
441.63
-0.68 ft
722,104
July 20, 2026
442.31
-0.73 ft
728,717
July 19, 2026
443.04
-0.74 ft
735,843
July 18, 2026
443.78
-0.71 ft
743,110
July 17, 2026
444.49
-0.77 ft
750,113
July 16, 2026
445.26
-0.66 ft
757,739
July 15, 2026
445.92
-0.65 ft
764,302
July 14, 2026
446.57
-0.74 ft
770,804
July 13, 2026
447.31
-0.63 ft
778,233
July 12, 2026
447.94
-0.70 ft
784,581
July 11, 2026
448.64
-0.62 ft
791,677
July 10, 2026
449.26
—
797,982
Frequently asked questions
What is the water level of Folsom Lake today?
As of July 23, 2026, Folsom Lake's surface elevation is 440.26 feet, with 708,865 acre-feet in storage — 72.6% of the 977,000 acre-foot capacity basis. Source: California DWR CDEC daily gauge data.
How full is Folsom Lake?
Folsom Lake is 72.6% full as of July 23, 2026. Its storage is 111% of the July 23 average across its record since 1985.
Is Folsom Lake rising or falling?
Folsom Lake is falling: its elevation changed -5.00 feet over the week ending July 23, 2026, -19.48 ft over the past month, and +7.45 feet over the past year. Source: California DWR CDEC daily gauge data.
What was Folsom Lake's lowest water level on record?
Folsom Lake's lowest surface elevation in the daily record since October 1, 1985 was 347.16 feet on November 3, 1988, per the daily record used by this site. As of July 23, 2026 the reservoir is 93.10 feet above that record low.
About this gauge
Folsom Lake on the American River northeast of Sacramento is a federal Central Valley Project reservoir and the primary flood-control and water-supply reservoir for the Sacramento region.
Data: California DWR CDEC station FOL, daily reservoir elevation (sensor 6) and storage (sensor 15). Percent full uses the 977,000 acre-foot capacity from the CDEC daily reservoir storage summary. Updated daily.