Reservoir · California · United States · CDEC
LAKE PILLSBURY NR POTTER VLY 24HR AVG
45.6% full
Capacity
99.42 hm³
Volume stored
45 hm³
Coordinates
39.408°N, 122.958°W
Last updated
2026-09-17
Current fill
45.6%vs 7 days ago
-1.2%losing
vs 1 year ago
+9.1%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: 2026-09-17.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 39.408, -122.958 · Open in Google Maps
About LAKE PILLSBURY NR POTTER VLY 24HR AVG
As of September 17, 2026, LAKE PILLSBURY NR POTTER VLY 24HR AVG is filled to 45.6% of its total capacity, holding roughly 45 hm³ of water out of a maximum 99 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 (-1.2 pts), and it is 9.1 points above its level on the same date a year earlier.
Across the readings we hold for LAKE PILLSBURY NR POTTER VLY 24HR AVG — 1811 data points between September 19, 2021 and September 17, 2026 — the level has ranged from a low of 26.2% (October 19, 2021) to a high of 83.4% (February 4, 2025). On average the reservoir is fullest around January and at its lowest around October.
It is operated by CDEC primarily for multiple purposes. It lies within the California basin at 39.408°N, 122.958°W.
Key facts
- Current fill level
- 45.6%
- Water stored
- 45 hm³
- Total capacity
- 99 hm³
- 7-day change
- ▼ 1.2 pts
- Year-on-year
- ▲ 9.1 pts
- Primary use
- Multipurpose
- River basin
- California
- Operator
- CDEC
- Coordinates
- 39.408°N, 122.958°W
- Last updated
- September 17, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 17 Sep 2026 | 45.6% | 45 |
| 16 Sep 2026 | 45.7% | 45 |
| 15 Sep 2026 | 45.9% | 46 |
| 14 Sep 2026 | 46.1% | 46 |
| 13 Sep 2026 | 46.2% | 46 |
| 12 Sep 2026 | 46.4% | 46 |
| 11 Sep 2026 | 46.6% | 46 |
| 10 Sep 2026 | 46.8% | 46 |
| 9 Sep 2026 | 46.9% | 47 |
| 8 Sep 2026 | 47.1% | 47 |
| 7 Sep 2026 | 47.2% | 47 |
| 6 Sep 2026 | 47.4% | 47 |