Reservoir · Ohio · United States · USACE CWMS
Charles Mill Lake
101.9% full
Capacity
9.13 hm³
Volume stored
9 hm³
Coordinates
40.740°N, 82.362°W
Last updated
2026-10-28
Current fill
101.9%vs 7 days ago
-1.3 pplosing
vs 1 year ago
N/A7-day trend
↓falling
Drought context
Drought Monitor at this site · 20 October 2026
Nonenot in a drought category
Charles Mill 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. 40.740°N, 82.362°W · Open in Google Maps
About Charles Mill Lake
As of October 28, 2026, Charles Mill Lake is filled to 101.9% of its total capacity, holding 9.3 hm³ of water out of a maximum 9.13 hm³. At this level the reservoir is effectively full.
Over the most recent week on record the fill level has fallen by 1.3 percentage points.
Across the readings we hold for Charles Mill Lake — 81 data points between November 3, 2021 and October 28, 2026 — the level has ranged from a low of 32.7% (December 5, 2021) to a high of 104.9% (September 29, 2026).
It is operated by USACE primarily for multiple purposes. It is at 40.740°N, 82.362°W.
Key facts
- Current fill level
- 101.9% of total capacity
- Water stored
- 9.3 hm³
- Total capacity
- 9.13 hm³
- 7-day change
- ▼ 1.3 pp
- Primary use
- Multipurpose
- Operator
- USACE
- Coordinates
- 40.740°N, 82.362°W
- Last updated
- October 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Oct 2026 | 101.9% | 9.3 |
| 27 Oct 2026 | 102.2% | 9.33 |
| 26 Oct 2026 | 102.4% | 9.35 |
| 25 Oct 2026 | 102.4% | 9.35 |
| 24 Oct 2026 | 102.6% | 9.37 |
| 23 Oct 2026 | 103.0% | 9.4 |
| 22 Oct 2026 | 103.0% | 9.4 |
| 21 Oct 2026 | 103.2% | 9.42 |
| 20 Oct 2026 | 103.0% | 9.4 |
| 19 Oct 2026 | 103.0% | 9.4 |
| 18 Oct 2026 | 102.6% | 9.37 |
| 17 Oct 2026 | 102.6% | 9.37 |