Reservoir · California · United States · CDEC
BERRYESSA
82.4% full
Capacity
1,976.38 hm³
Volume stored
1628 hm³
Vs month average
114% of normal
Reported
November 8, 2026
Current fill
82.4%vs 7 days ago
-0.1 pplosing
vs 1 year ago
-1.7 ppyear-over-year
7-day trend
→stable
Drought context
California drought →Storage vs November average
114%of normal
82.4% now · 72.0% average (6 yrs)
U.S. Drought Monitor
D0Abnormally dry
Week of 3 November 2026
Drought figures describe the ground around the reservoir, not its storage. Sources: U.S. Drought Monitor.
Data source: CDEC — California Dept of Water Resources — daily reservoir storage volume. Capacity is the design (normal full-pool) capacity from the US National Inventory of Dams (NID); fill % = current volume ÷ design capacity. Last reading: 2026-11-08.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 38.513°N, 122.104°W · Open in Google Maps
On the map
Zoom out for the other countries we track · click one to open itLoading map…
About BERRYESSA
As of November 8, 2026, BERRYESSA is filled to 82.4% of its total capacity, holding 1,628 hm³ of water out of a maximum 1,976 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (-0.1 pp), and it is 1.7 points below its level on the same date a year earlier.
Across the readings we hold for BERRYESSA — 1825 data points between November 10, 2021 and November 8, 2026 — the level has ranged from a low of 49.3% (November 28, 2022) to a high of 100.3% (February 14, 2025). On average the reservoir is fullest around April and at its lowest around November.
It is operated by CDEC primarily for multiple purposes. It is at 38.513°N, 122.104°W.
Key facts
- Current fill level
- 82.4% of total capacity
- Water stored
- 1,628 hm³
- Total capacity
- 1,976 hm³
- 7-day change
- ▼ 0.1 pp
- Year-on-year
- ▼ 1.7 pp
- Primary use
- Multipurpose
- Operator
- CDEC
- Coordinates
- 38.513°N, 122.104°W
- Last updated
- November 8, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 8 Nov 2026 | 82.4% | 1,628 |
| 7 Nov 2026 | 82.4% | 1,629 |
| 6 Nov 2026 | 82.4% | 1,629 |
| 5 Nov 2026 | 82.4% | 1,629 |
| 4 Nov 2026 | 82.4% | 1,629 |
| 3 Nov 2026 | 82.5% | 1,630 |
| 2 Nov 2026 | 82.5% | 1,630 |
| 1 Nov 2026 | 82.5% | 1,630 |
| 31 Oct 2026 | 82.5% | 1,631 |
| 30 Oct 2026 | 82.5% | 1,631 |
| 29 Oct 2026 | 82.6% | 1,632 |
| 28 Oct 2026 | 82.6% | 1,633 |