Reservoir · California · United States · CDEC
CMN
91.2% full
Capacity
514.36 hm³
Volume stored
469 hm³
Coordinates
38.225°N, 121.021°W
Last updated
2026-07-07
Current fill
91.2%vs 7 days ago
-0.1%losing
vs 1 year ago
-3.8%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: 2026-07-07.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 38.225, -121.021 · Open in Google Maps
About CMN
As of July 7, 2026, CMN is filled to 91.2% of its total capacity, holding roughly 469 hm³ of water out of a maximum 514 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (-0.1 pts), and it is 3.8 points below its level on the same date a year earlier.
Across the readings we hold for CMN — 1815 data points between July 10, 2021 and July 7, 2026 — the level has ranged from a low of 38.5% (December 17, 2021) to a high of 96.7% (May 28, 2026). On average the reservoir is fullest around June and at its lowest around December.
It is operated by CDEC primarily for multiple purposes. It lies within the California basin at 38.225°N, 121.021°W.
Key facts
- Current fill level
- 91.2%
- Water stored
- 469 hm³
- Total capacity
- 514 hm³
- 7-day change
- ▼ 0.1 pts
- Year-on-year
- ▼ 3.8 pts
- Primary use
- Multipurpose
- River basin
- California
- Operator
- CDEC
- Coordinates
- 38.225°N, 121.021°W
- Last updated
- July 7, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 7 Jul 2026 | 91.2% | 469 |
| 6 Jul 2026 | 91.3% | 470 |
| 5 Jul 2026 | 91.4% | 470 |
| 4 Jul 2026 | 91.5% | 471 |
| 3 Jul 2026 | 91.6% | 471 |
| 2 Jul 2026 | 91.8% | 472 |
| 1 Jul 2026 | 91.7% | 472 |
| 30 Jun 2026 | 91.8% | 472 |
| 29 Jun 2026 | 91.9% | 473 |
| 28 Jun 2026 | 92.3% | 475 |
| 27 Jun 2026 | 92.4% | 475 |
| 26 Jun 2026 | 92.6% | 476 |
Frequently asked questions
What is the current water level of CMN?
As of July 7, 2026, CMN is at 91.2% of its capacity, holding approximately 469 hm³ of water, according to CDEC (CA DWR) data.
Is CMN reservoir full?
No. As of July 7, 2026, CMN is high at 91.2% of its capacity, so it is not full.
Is the water level at CMN rising or falling?
The level at CMN has been broadly stable over the latest week on record (-0.1 points).
How much water can CMN hold?
CMN has a total capacity of 514 hm³.
Where is CMN reservoir located?
CMN is located in California, United States, within the California basin (coordinates 38.225°N, 121.021°W).
What is CMN used for?
CMN is used primarily for multiple purposes, and is managed by CDEC.