Reservoir · California · United States · CDEC
EXC
78.2% full
Capacity
1,263.83 hm³
Volume stored
988 hm³
Coordinates
37.585°N, 120.270°W
Last updated
2026-07-06
Current fill
78.2%vs 7 days ago
-0.3%losing
vs 1 year ago
-8.6%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: 2026-07-06.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 37.585, -120.270 · Open in Google Maps
About EXC
As of July 6, 2026, EXC is filled to 78.2% of its total capacity, holding roughly 988 hm³ of water out of a maximum 1,264 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has held broadly steady (-0.3 pts), and it is 8.6 points below its level on the same date a year earlier.
Across the readings we hold for EXC — 1823 data points between July 10, 2021 and July 6, 2026 — the level has ranged from a low of 17.6% (October 23, 2021) to a high of 97.7% (June 12, 2024). 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 37.585°N, 120.270°W.
Key facts
- Current fill level
- 78.2%
- Water stored
- 988 hm³
- Total capacity
- 1,264 hm³
- 7-day change
- ▼ 0.3 pts
- Year-on-year
- ▼ 8.6 pts
- Primary use
- Multipurpose
- River basin
- California
- Operator
- CDEC
- Coordinates
- 37.585°N, 120.270°W
- Last updated
- July 6, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 6 Jul 2026 | 78.2% | 988 |
| 5 Jul 2026 | 78.5% | 992 |
| 4 Jul 2026 | 78.7% | 995 |
| 3 Jul 2026 | 79.0% | 999 |
| 2 Jul 2026 | 79.4% | 1,003 |
| 1 Jul 2026 | 79.7% | 1,008 |
| 30 Jun 2026 | 80.1% | 1,012 |
| 29 Jun 2026 | 80.4% | 1,016 |
| 28 Jun 2026 | 80.7% | 1,020 |
| 27 Jun 2026 | 81.0% | 1,023 |
| 26 Jun 2026 | 81.2% | 1,026 |
| 25 Jun 2026 | 81.5% | 1,029 |
Frequently asked questions
What is the current water level of EXC?
As of July 6, 2026, EXC is at 78.2% of its capacity, holding approximately 988 hm³ of water, according to CDEC (CA DWR) data.
Is EXC reservoir full?
No. As of July 6, 2026, EXC is within its normal operating range at 78.2% of its capacity, so it is not full.
Is the water level at EXC rising or falling?
The level at EXC has been broadly stable over the latest week on record (-0.3 points).
How much water can EXC hold?
EXC has a total capacity of 1,264 hm³.
Where is EXC reservoir located?
EXC is located in California, United States, within the California basin (coordinates 37.585°N, 120.270°W).
What is EXC used for?
EXC is used primarily for multiple purposes, and is managed by CDEC.