Reservoir · California · United States · CDEC
STONY GORGE RESERVOIR
90.9% full
Capacity
62.14 hm³
Volume stored
57 hm³
Vs month average
156% of normal
Coordinates
39.583°N, 122.533°W
Last updated
2026-10-14
Current fill
90.9%vs 7 days ago
-1.0%losing
vs 1 year ago
+7.1%year-over-year
7-day trend
→stable
Drought context
Storage vs October average
156%of normal
90.9% full on 2026-10-14, against an average of 58.1% for October across 6 years of readings (+32.8 points).
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: 2026-10-14.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 39.583, -122.533 · Open in Google Maps
About STONY GORGE RESERVOIR
As of October 14, 2026, STONY GORGE RESERVOIR is filled to 90.9% of its total capacity, holding roughly 57 hm³ of water out of a maximum 62 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (-1.0 pts), and it is 7.1 points above its level on the same date a year earlier.
Across the readings we hold for STONY GORGE RESERVOIR — 1797 data points between October 16, 2021 and October 14, 2026 — the level has ranged from a low of 12.5% (September 17, 2022) to a high of 100.5% (April 13, 2023). On average the reservoir is fullest around May and at its lowest around November.
It is operated by CDEC primarily for multiple purposes. It lies within the California basin at 39.583°N, 122.533°W.
Key facts
- Current fill level
- 90.9%
- Water stored
- 57 hm³
- Total capacity
- 62 hm³
- 7-day change
- ▼ 1.0 pts
- Year-on-year
- ▲ 7.1 pts
- Primary use
- Multipurpose
- River basin
- California
- Operator
- CDEC
- Coordinates
- 39.583°N, 122.533°W
- Last updated
- October 14, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 14 Oct 2026 | 90.9% | 57 |
| 13 Oct 2026 | 91.5% | 57 |
| 12 Oct 2026 | 91.8% | 57 |
| 11 Oct 2026 | 91.8% | 57 |
| 10 Oct 2026 | 91.9% | 57 |
| 9 Oct 2026 | 91.9% | 57 |
| 8 Oct 2026 | 91.9% | 57 |
| 7 Oct 2026 | 91.9% | 57 |
| 6 Oct 2026 | 92.0% | 57 |
| 5 Oct 2026 | 92.0% | 57 |
| 4 Oct 2026 | 92.0% | 57 |
| 3 Oct 2026 | 92.0% | 57 |