Reservoir · Indiana · United States · USACE CWMS
Monroe Lake
51.5% full
Capacity
428.15 hm³
Volume stored
220 hm³
Vs month average
99% of normal
Coordinates
39.008°N, 86.512°W
Last updated
2026-10-29
Current fill
51.5%vs 7 days ago
-0.3 pplosing
vs 1 year ago
N/A7-day trend
→stable
Drought context
Storage vs October average
99%of normal
51.5% full on 2026-10-29, against an average of 52.1% for October across 2 years of readings (-0.6 points).
Drought Monitor at this site · 27 October 2026
D0abnormally dry
The ground at Monroe Lake'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. 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: 2026-10-29.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 39.008°N, 86.512°W · Open in Google Maps
About Monroe Lake
As of October 29, 2026, Monroe Lake is filled to 51.5% of its total capacity, holding 220.37 hm³ of water out of a maximum 428.15 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 (-0.3 pp).
Across the readings we hold for Monroe Lake — 330 data points between October 30, 2021 and October 29, 2026 — the level has ranged from a low of 51.5% (October 27, 2026) to a high of 100.0% (July 1, 2026). On average the reservoir is fullest around July and at its lowest around October.
It is operated by USACE primarily for multiple purposes. It is at 39.008°N, 86.512°W.
Key facts
- Current fill level
- 51.5% of total capacity
- Water stored
- 220.37 hm³
- Total capacity
- 428.15 hm³
- 7-day change
- ▼ 0.3 pp
- Primary use
- Multipurpose
- Operator
- USACE
- Coordinates
- 39.008°N, 86.512°W
- Last updated
- October 29, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 29 Oct 2026 | 51.5% | 220.37 |
| 28 Oct 2026 | 51.5% | 220.48 |
| 27 Oct 2026 | 51.5% | 220.63 |
| 26 Oct 2026 | 51.6% | 220.79 |
| 25 Oct 2026 | 51.6% | 221.13 |
| 24 Oct 2026 | 51.7% | 221.42 |
| 23 Oct 2026 | 51.8% | 221.65 |
| 22 Oct 2026 | 51.8% | 221.92 |
| 21 Oct 2026 | 51.9% | 222.07 |
| 20 Oct 2026 | 51.9% | 222.35 |
| 19 Oct 2026 | 52.0% | 222.59 |
| 18 Oct 2026 | 52.1% | 222.96 |