Reservoir · California · United States · CDEC
LAKE ALMANOR
83.0% full
Capacity
1,406.17 hm³
Volume stored
1167 hm³
Coordinates
40.218°N, 121.173°W
Last updated
2026-09-17
Current fill
83.0%vs 7 days ago
-1.2%losing
vs 1 year ago
+4.4%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. 40.218, -121.173 · Open in Google Maps
About LAKE ALMANOR
As of September 17, 2026, LAKE ALMANOR is filled to 83.0% of its total capacity, holding roughly 1,167 hm³ of water out of a maximum 1,406 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (-1.2 pts), and it is 4.4 points above its level on the same date a year earlier.
Across the readings we hold for LAKE ALMANOR — 1823 data points between September 19, 2021 and September 17, 2026 — the level has ranged from a low of 58.6% (October 21, 2021) to a high of 98.6% (May 26, 2024). On average the reservoir is fullest around June and at its lowest around October.
It is operated by CDEC primarily for multiple purposes. It lies within the California basin at 40.218°N, 121.173°W.
Key facts
- Current fill level
- 83.0%
- Water stored
- 1,167 hm³
- Total capacity
- 1,406 hm³
- 7-day change
- ▼ 1.2 pts
- Year-on-year
- ▲ 4.4 pts
- Primary use
- Multipurpose
- River basin
- California
- Operator
- CDEC
- Coordinates
- 40.218°N, 121.173°W
- Last updated
- September 17, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 17 Sep 2026 | 83.0% | 1,167 |
| 16 Sep 2026 | 83.1% | 1,169 |
| 15 Sep 2026 | 83.3% | 1,171 |
| 14 Sep 2026 | 83.4% | 1,173 |
| 13 Sep 2026 | 83.6% | 1,176 |
| 12 Sep 2026 | 83.8% | 1,178 |
| 11 Sep 2026 | 83.9% | 1,180 |
| 10 Sep 2026 | 84.2% | 1,184 |
| 9 Sep 2026 | 84.4% | 1,187 |
| 8 Sep 2026 | 84.5% | 1,189 |
| 7 Sep 2026 | 84.7% | 1,192 |
| 6 Sep 2026 | 84.9% | 1,194 |