Reservoir · California · United States · CDEC
DON
95.3% full
Capacity
79.56 hm³
Volume stored
76 hm³
Coordinates
38.329°N, 119.960°W
Last updated
2026-07-07
Current fill
95.3%vs 7 days ago
-0.5%losing
vs 1 year ago
-2.2%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. 38.329, -119.960 · Open in Google Maps
About DON
As of July 7, 2026, DON is filled to 95.3% of its total capacity, holding roughly 76 hm³ of water out of a maximum 80 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (-0.5 pts), and it is 2.2 points below its level on the same date a year earlier.
Across the readings we hold for DON — 1824 data points between July 10, 2021 and July 7, 2026 — the level has ranged from a low of 13.8% (March 6, 2024) to a high of 105.0% (May 3, 2024). On average the reservoir is fullest around June and at its lowest around February.
It is operated by CDEC primarily for multiple purposes. It lies within the California basin at 38.329°N, 119.960°W.
Key facts
- Current fill level
- 95.3%
- Water stored
- 76 hm³
- Total capacity
- 80 hm³
- 7-day change
- ▼ 0.5 pts
- Year-on-year
- ▼ 2.2 pts
- Primary use
- Multipurpose
- River basin
- California
- Operator
- CDEC
- Coordinates
- 38.329°N, 119.960°W
- Last updated
- July 7, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 7 Jul 2026 | 95.3% | 76 |
| 6 Jul 2026 | 95.8% | 76 |
| 5 Jul 2026 | 96.2% | 77 |
| 4 Jul 2026 | 96.7% | 77 |
| 3 Jul 2026 | 97.0% | 77 |
| 2 Jul 2026 | 97.2% | 77 |
| 1 Jul 2026 | 97.2% | 77 |
| 30 Jun 2026 | 97.2% | 77 |
| 29 Jun 2026 | 97.1% | 77 |
| 28 Jun 2026 | 96.9% | 77 |
| 27 Jun 2026 | 96.6% | 77 |
| 26 Jun 2026 | 96.7% | 77 |
Frequently asked questions
What is the current water level of DON?
As of July 7, 2026, DON is at 95.3% of its capacity, holding approximately 76 hm³ of water, according to CDEC (CA DWR) data.
Is DON reservoir full?
DON is essentially full, sitting at 95.3% of capacity as of July 7, 2026.
Is the water level at DON rising or falling?
The level at DON has been broadly stable over the latest week on record (-0.5 points).
How much water can DON hold?
DON has a total capacity of 80 hm³.
Where is DON reservoir located?
DON is located in California, United States, within the California basin (coordinates 38.329°N, 119.960°W).
What is DON used for?
DON is used primarily for multiple purposes, and is managed by CDEC.