Reservoir · Indiana · United States · USACE CWMS
Monroe Lake
52.0% full
Capacity
428.41 hm³
Volume stored
223 hm³
Vs month average
99% of normal
Coordinates
39.008°N, 86.512°W
Last updated
2026-10-15
Current fill
52.0%vs 7 days ago
-0.1%losing
vs 1 year ago
N/A7-day trend
→stable
Drought context
Storage vs October average
99%of normal
52.0% full on 2026-10-15, against an average of 52.5% for October across 3 years of readings (-0.5 points).
Drought Monitor at this site · 13 October 2026
Nonenot in a drought category
Monroe 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. Indiana drought figures →
Data source: USACE CWMS — US Army Corps of Engineers — daily reservoir storage volume. Design capacity is unavailable for this site, so fill % is estimated against the 5-year maximum storage and may overstate fullness. Last reading: 2026-10-15.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 39.008, -86.512 · Open in Google Maps
About Monroe Lake
As of October 15, 2026, Monroe Lake is filled to 52.0% of its total capacity, holding roughly 223 hm³ of water out of a maximum 428 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has held broadly steady (-0.1 pts).
Across the readings we hold for Monroe Lake — 330 data points between October 16, 2021 and October 15, 2026 — the level has ranged from a low of 51.9% (October 13, 2026) to a high of 100.0% (June 28, 2026). On average the reservoir is fullest around June and at its lowest around October.
It is operated by USACE primarily for multiple purposes. It lies within the Indiana basin at 39.008°N, 86.512°W.
Key facts
- Current fill level
- 52.0%
- Water stored
- 223 hm³
- Total capacity
- 428 hm³
- 7-day change
- ▼ 0.1 pts
- Primary use
- Multipurpose
- River basin
- Indiana
- Operator
- USACE
- Coordinates
- 39.008°N, 86.512°W
- Last updated
- October 15, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 15 Oct 2026 | 52.0% | 223 |
| 14 Oct 2026 | 52.0% | 223 |
| 13 Oct 2026 | 51.9% | 222 |
| 12 Oct 2026 | 52.0% | 223 |
| 11 Oct 2026 | 52.0% | 223 |
| 10 Oct 2026 | 52.1% | 223 |
| 9 Oct 2026 | 52.1% | 223 |
| 8 Oct 2026 | 52.1% | 223 |
| 7 Oct 2026 | 52.2% | 224 |
| 6 Oct 2026 | 52.3% | 224 |
| 5 Oct 2026 | 52.4% | 224 |
| 4 Oct 2026 | 52.4% | 225 |