Reservoir · Ohio · United States · USACE CWMS
Dillon Lake
65.6% full
Capacity
21.59 hm³
Volume stored
14 hm³
Vs month average
98% of normal
Coordinates
39.992°N, 82.082°W
Last updated
2026-10-28
Current fill
65.6%vs 7 days ago
-1.1 pplosing
vs 1 year ago
N/A7-day trend
↓falling
Drought context
Storage vs October average
98%of normal
65.6% full on 2026-10-28, against an average of 67.0% for October across 2 years of readings (-1.4 points).
Drought Monitor at this site · 20 October 2026
Nonenot in a drought category
Dillon Lake's coordinates fall outside every category on the weekly U.S. Drought Monitor map. That describes local conditions — rainfall, soil moisture, streamflow — not the reservoir's storage. Ohio drought figures →
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: 2026-10-28.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 39.992°N, 82.082°W · Open in Google Maps
About Dillon Lake
As of October 28, 2026, Dillon Lake is filled to 65.6% of its total capacity, holding 14.16 hm³ of water out of a maximum 21.59 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has fallen by 1.1 percentage points.
Across the readings we hold for Dillon Lake — 96 data points between October 29, 2021 and October 28, 2026 — the level has ranged from a low of 40.8% (November 27, 2021) to a high of 103.3% (September 23, 2026).
It is operated by USACE primarily for multiple purposes. It is at 39.992°N, 82.082°W.
Key facts
- Current fill level
- 65.6% of total capacity
- Water stored
- 14.16 hm³
- Total capacity
- 21.59 hm³
- 7-day change
- ▼ 1.1 pp
- Primary use
- Multipurpose
- Operator
- USACE
- Coordinates
- 39.992°N, 82.082°W
- Last updated
- October 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Oct 2026 | 65.6% | 14.16 |
| 27 Oct 2026 | 65.9% | 14.23 |
| 26 Oct 2026 | 67.9% | 14.65 |
| 25 Oct 2026 | 67.9% | 14.65 |
| 24 Oct 2026 | 66.7% | 14.41 |
| 23 Oct 2026 | 65.5% | 14.14 |
| 22 Oct 2026 | 65.7% | 14.19 |
| 21 Oct 2026 | 66.7% | 14.41 |
| 20 Oct 2026 | 67.7% | 14.61 |
| 19 Oct 2026 | 67.8% | 14.63 |
| 18 Oct 2026 | 67.3% | 14.54 |
| 17 Oct 2026 | 66.7% | 14.41 |