Reservoir · California · United States · CDEC
ALM
94.5% full
Capacity
1,387.16 hm³
Volume stored
1311 hm³
Coordinates
40.218°N, 121.173°W
Last updated
2026-07-08
Current fill
94.5%vs 7 days ago
0.0%stable
vs 1 year ago
-0.6%year-over-year
7-day trend
→stable
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: 2026-07-08.
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 ALM
As of July 8, 2026, ALM is filled to 94.5% of its total capacity, holding roughly 1,311 hm³ of water out of a maximum 1,387 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (+0.0 pts), and it sits close to where it was a year earlier.
Across the readings we hold for ALM — 1823 data points between July 10, 2021 and July 8, 2026 — the level has ranged from a low of 4.7% (August 31, 2021) to a high of 100.0% (May 27, 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
- 94.5%
- Water stored
- 1,311 hm³
- Total capacity
- 1,387 hm³
- 7-day change
- No change
- Year-on-year
- ▼ 0.6 pts
- Primary use
- Multipurpose
- River basin
- California
- Operator
- CDEC
- Coordinates
- 40.218°N, 121.173°W
- Last updated
- July 8, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 8 Jul 2026 | 94.5% | 1,311 |
| 7 Jul 2026 | 94.5% | 1,311 |
| 6 Jul 2026 | 94.6% | 1,313 |
| 5 Jul 2026 | 94.7% | 1,313 |
| 4 Jul 2026 | 94.8% | 1,315 |
| 3 Jul 2026 | 94.9% | 1,317 |
| 2 Jul 2026 | 94.9% | 1,317 |
| 1 Jul 2026 | 95.0% | 1,318 |
| 30 Jun 2026 | 95.1% | 1,319 |
| 29 Jun 2026 | 95.1% | 1,319 |
| 28 Jun 2026 | 95.1% | 1,319 |
| 27 Jun 2026 | 95.0% | 1,318 |
Frequently asked questions
What is the current water level of ALM?
As of July 8, 2026, ALM is at 94.5% of its capacity, holding approximately 1,311 hm³ of water, according to CDEC (CA DWR) data.
Is ALM reservoir full?
No. As of July 8, 2026, ALM is high at 94.5% of its capacity, so it is not full.
Is the water level at ALM rising or falling?
The level at ALM has been broadly stable over the latest week on record (0.0 points).
How much water can ALM hold?
ALM has a total capacity of 1,387 hm³.
Where is ALM reservoir located?
ALM is located in California, United States, within the California basin (coordinates 40.218°N, 121.173°W).
What is ALM used for?
ALM is used primarily for multiple purposes, and is managed by CDEC.