Reservoir · California · United States · CDEC
SUCCESS DAM
13.8% full
Capacity
119.01 hm³
Volume stored
17 hm³
Coordinates
36.057°N, 118.924°W
Last updated
2026-09-17
Current fill
13.8%vs 7 days ago
-1.6%losing
vs 1 year ago
+3.1%year-over-year
7-day trend
↓falling
Data source: CDEC — California Dept of Water Resources — daily reservoir storage volume. Design capacity is unavailable for this site, so fill % is estimated against the 5-year maximum storage and may overstate fullness. 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. 36.057, -118.924 · Open in Google Maps
About SUCCESS DAM
As of September 17, 2026, SUCCESS DAM is filled to 13.8% of its total capacity, holding roughly 17 hm³ of water out of a maximum 119 hm³. At this level the reservoir is critically low.
Over the most recent week on record the fill level has fallen by 1.6 percentage points, and it is 3.1 points above its level on the same date a year earlier.
Across the readings we hold for SUCCESS DAM — 1823 data points between September 19, 2021 and September 17, 2026 — the level has ranged from a low of 5.1% (October 23, 2022) to a high of 100.0% (March 15, 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 36.057°N, 118.924°W.
Key facts
- Current fill level
- 13.8%
- Water stored
- 17 hm³
- Total capacity
- 119 hm³
- 7-day change
- ▼ 1.6 pts
- Year-on-year
- ▲ 3.1 pts
- Primary use
- Multipurpose
- River basin
- California
- Operator
- CDEC
- Coordinates
- 36.057°N, 118.924°W
- Last updated
- September 17, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 17 Sep 2026 | 13.8% | 16 |
| 16 Sep 2026 | 14.1% | 17 |
| 15 Sep 2026 | 14.3% | 17 |
| 14 Sep 2026 | 14.5% | 17 |
| 13 Sep 2026 | 14.8% | 18 |
| 12 Sep 2026 | 15.0% | 18 |
| 11 Sep 2026 | 15.2% | 18 |
| 10 Sep 2026 | 15.4% | 18 |
| 9 Sep 2026 | 15.6% | 19 |
| 8 Sep 2026 | 15.7% | 19 |
| 7 Sep 2026 | 15.8% | 19 |
| 6 Sep 2026 | 16.0% | 19 |