Reservoir · Ohio · United States · USACE CWMS
Michael J Kirwan Reservoir
80.2% full
Capacity
69.94 hm³
Volume stored
56 hm³
Vs month average
96% of normal
Coordinates
41.156°N, 81.081°W
Last updated
2026-10-29
Current fill
80.2%vs 7 days ago
-1.0 pplosing
vs 1 year ago
N/A7-day trend
↓falling
Drought context
Storage vs October average
96%of normal
80.2% full on 2026-10-29, against an average of 83.2% for October across 2 years of readings (-3.0 points).
Drought Monitor at this site · 27 October 2026
D0abnormally dry
The ground at Michael J Kirwan Reservoir's coordinates falls inside the D0 area of 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: 2026-10-29.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 41.156°N, 81.081°W · Open in Google Maps
About Michael J Kirwan Reservoir
As of October 29, 2026, Michael J Kirwan Reservoir is filled to 80.2% of its total capacity, holding 56.08 hm³ of water out of a maximum 69.94 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has fallen by 1.0 percentage points.
Across the readings we hold for Michael J Kirwan Reservoir — 329 data points between October 30, 2021 and October 29, 2026 — the level has ranged from a low of 79.7% (November 24, 2021) to a high of 104.3% (May 7, 2022). On average the reservoir is fullest around May and at its lowest around November.
It is operated by USACE primarily for multiple purposes. It is at 41.156°N, 81.081°W.
Key facts
- Current fill level
- 80.2% of total capacity
- Water stored
- 56.08 hm³
- Total capacity
- 69.94 hm³
- 7-day change
- ▼ 1.0 pp
- Primary use
- Multipurpose
- Operator
- USACE
- Coordinates
- 41.156°N, 81.081°W
- Last updated
- October 29, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 29 Oct 2026 | 80.2% | 56.08 |
| 28 Oct 2026 | 80.4% | 56.2 |
| 27 Oct 2026 | 80.7% | 56.46 |
| 26 Oct 2026 | 80.7% | 56.46 |
| 25 Oct 2026 | 81.0% | 56.63 |
| 24 Oct 2026 | 81.1% | 56.72 |
| 23 Oct 2026 | 81.2% | 56.77 |
| 22 Oct 2026 | 81.2% | 56.77 |
| 21 Oct 2026 | 81.2% | 56.8 |
| 20 Oct 2026 | 81.5% | 57.01 |
| 19 Oct 2026 | 81.7% | 57.15 |
| 18 Oct 2026 | 81.8% | 57.24 |