Monticello Dam · Putah Creek · California — updated daily from official gauges
Latest reading
Lake Berryessa is 89.0% full as of — surface elevation 433.21 feet, storage 1,425,726 acre-feet (capacity basis 1,602,000 acre-feet).
That elevation is its lowest July reading since 2023, and 71.46 feet above its record low of 361.75 ft (), in a daily record going back to January 1, 1985 (start of CDEC's daily record).
Storage is 117% of the July 23 average across 40 years of record.
Water level change: -0.58 ft over the past week, -2.47 ft over the past month, and -1.04 ft over the past year.
Percent full
89.0%
of 1,602,000 AF
Vs date average
117%
of the Jul 23 storage average since 1985
Elevation
433.21 ft
full pool 440.0 ft
Storage
1,425,726 AF
-19 KAF vs 1 yr ago
1-week change
-0.58 ft
elevation
1-year change
-1.04 ft
elevation
Lake Berryessa vs its record low
In the daily record used by this site (going back to January 1, 1985 (start of CDEC's daily record)), Lake Berryessa's lowest surface elevation was 361.75 feet on , when storage was 421,530 acre-feet. As of , Lake Berryessa is at 433.21 feet — 71.46 feet above that record. The record high in the same series was 444.75 ft on .
Lake Berryessa storage in context
Reading
Elevation (ft)
Storage (AF)
% full
Today (July 23, 2026)
433.21
1,425,726
89.0%
One year ago
434.25
1,444,584
90.2%
Five years ago
407.53
990,742
61.8%
Record low (November 30, 1992)
361.75
421,530
26.3%
Capacity basis
440.00
1,602,000
100.0%
Lake Berryessa water level, past 12 months
Lake Berryessa 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.
Lake Berryessa elevation, full record
Lake Berryessa 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
433.21
-0.17 ft
1,425,726
July 21, 2026
433.38
-0.08 ft
1,428,825
July 20, 2026
433.46
-0.07 ft
1,430,284
July 19, 2026
433.53
-0.08 ft
1,431,562
July 18, 2026
433.61
-0.08 ft
1,433,022
July 17, 2026
433.69
-0.10 ft
1,434,483
July 16, 2026
433.79
-0.08 ft
1,436,310
July 15, 2026
433.87
-0.08 ft
1,437,772
July 14, 2026
433.95
-0.07 ft
1,439,235
July 13, 2026
434.02
-0.09 ft
1,440,515
July 12, 2026
434.11
-0.08 ft
1,442,032
July 11, 2026
434.19
-0.07 ft
1,443,490
July 10, 2026
434.26
-0.08 ft
1,444,767
July 9, 2026
434.34
—
1,446,226
Frequently asked questions
What is the water level of Lake Berryessa today?
As of July 23, 2026, Lake Berryessa's surface elevation is 433.21 feet, with 1,425,726 acre-feet in storage — 89.0% of the 1,602,000 acre-foot capacity basis. Source: California DWR CDEC daily gauge data.
How full is Lake Berryessa?
Lake Berryessa is 89.0% full as of July 23, 2026. Its storage is 117% of the July 23 average across its record since 1985.
Is Lake Berryessa rising or falling?
Lake Berryessa is falling: its elevation changed -0.58 feet over the week ending July 23, 2026, -2.47 ft over the past month, and -1.04 feet over the past year. Source: California DWR CDEC daily gauge data.
What was Lake Berryessa's lowest water level on record?
Lake Berryessa's lowest surface elevation in the daily record since January 1, 1985 was 361.75 feet on November 30, 1992, per the daily record used by this site. As of July 23, 2026 the reservoir is 71.46 feet above that record low.
About this gauge
Lake Berryessa, behind Monticello Dam on Putah Creek, is the largest reservoir of Reclamation's Solano Project and is known for its uncontrolled "Glory Hole" spillway, which engages at elevation 440 feet.
Data: California DWR CDEC station BER, daily reservoir elevation (sensor 6) and storage (sensor 15). Percent full uses the 1,602,000 acre-foot capacity from the CDEC daily reservoir storage summary. Updated daily.