Reservoir · California · United States · CDEC
DON PEDRO RESERVOIR
77.0% full
Capacity
2,503.97 hm³
Volume stored
1929 hm³
Coordinates
37.702°N, 120.421°W
Last updated
2026-09-16
Current fill
77.0%vs 7 days ago
-1.0%losing
vs 1 year ago
-1.7%year-over-year
7-day trend
→stable
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: 2026-09-16.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 37.702, -120.421 · Open in Google Maps
About DON PEDRO RESERVOIR
As of September 16, 2026, DON PEDRO RESERVOIR is filled to 77.0% of its total capacity, holding roughly 1,929 hm³ of water out of a maximum 2,504 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has held broadly steady (-1.0 pts), and it is 1.7 points below its level on the same date a year earlier.
Across the readings we hold for DON PEDRO RESERVOIR — 1820 data points between September 19, 2021 and September 16, 2026 — the level has ranged from a low of 47.7% (October 24, 2021) to a high of 97.0% (July 24, 2023). On average the reservoir is fullest around June and at its lowest around November.
It is operated by CDEC primarily for multiple purposes. It lies within the California basin at 37.702°N, 120.421°W.
Key facts
- Current fill level
- 77.0%
- Water stored
- 1,929 hm³
- Total capacity
- 2,504 hm³
- 7-day change
- ▼ 1.0 pts
- Year-on-year
- ▼ 1.7 pts
- Primary use
- Multipurpose
- River basin
- California
- Operator
- CDEC
- Coordinates
- 37.702°N, 120.421°W
- Last updated
- September 16, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 16 Sep 2026 | 77.0% | 1,929 |
| 15 Sep 2026 | 77.2% | 1,932 |
| 14 Sep 2026 | 77.3% | 1,936 |
| 13 Sep 2026 | 77.4% | 1,939 |
| 12 Sep 2026 | 77.6% | 1,943 |
| 11 Sep 2026 | 77.7% | 1,946 |
| 10 Sep 2026 | 77.9% | 1,950 |
| 9 Sep 2026 | 78.0% | 1,953 |
| 8 Sep 2026 | 78.2% | 1,959 |
| 7 Sep 2026 | 78.3% | 1,961 |
| 6 Sep 2026 | 78.4% | 1,964 |
| 5 Sep 2026 | 78.6% | 1,968 |