Reservoir · Ohio · United States · USACE CWMS
Dillon Lake
10.8% full
Capacity
140.62 hm³
Volume stored
15 hm³
Coordinates
39.992°N, 82.082°W
Last updated
2026-09-11
Current fill
10.8%vs 7 days ago
+0.6%gaining
vs 1 year ago
N/A7-day trend
→stable
Data source: USACE CWMS — US Army Corps of Engineers — 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: 2026-09-11.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 39.992, -82.082 · Open in Google Maps
About Dillon Lake
As of September 11, 2026, Dillon Lake is filled to 10.8% of its total capacity, holding roughly 15 hm³ of water out of a maximum 141 hm³. At this level the reservoir is critically low.
Over the most recent week on record the fill level has held broadly steady (+0.6 pts).
Across the readings we hold for Dillon Lake — 47 data points between July 27, 2026 and September 11, 2026 — the level has ranged from a low of 9.8% (September 7, 2026) to a high of 54.4% (August 21, 2026).
It is operated by USACE primarily for multiple purposes. It lies within the Ohio basin at 39.992°N, 82.082°W.
Key facts
- Current fill level
- 10.8%
- Water stored
- 15 hm³
- Total capacity
- 141 hm³
- 7-day change
- ▲ 0.6 pts
- Primary use
- Multipurpose
- River basin
- Ohio
- Operator
- USACE
- Coordinates
- 39.992°N, 82.082°W
- Last updated
- September 11, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 11 Sep 2026 | 10.8% | 15 |
| 10 Sep 2026 | 11.3% | 16 |
| 9 Sep 2026 | 10.0% | 14 |
| 8 Sep 2026 | 9.8% | 14 |
| 7 Sep 2026 | 9.8% | 14 |
| 6 Sep 2026 | 10.1% | 14 |
| 5 Sep 2026 | 10.0% | 14 |
| 4 Sep 2026 | 10.2% | 14 |
| 3 Sep 2026 | 10.4% | 15 |
| 2 Sep 2026 | 10.5% | 15 |
| 1 Sep 2026 | 10.1% | 14 |
| 31 Aug 2026 | 10.0% | 14 |