Reservoir · Indiana · United States · USACE CWMS
Monroe Lake
92.7% full
Capacity
439.48 hm³
Volume stored
407 hm³
Coordinates
39.008°N, 86.513°W
Last updated
2026-06-11
Current fill
92.7%vs 7 days ago
-0.6%losing
vs 1 year ago
+25.7%year-over-year
7-day trend
→stable
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: 2026-06-11.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 39.008, -86.513 · Open in Google Maps
About Monroe Lake
As of June 11, 2026, Monroe Lake is filled to 92.7% of its total capacity, holding roughly 407 hm³ of water out of a maximum 439 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (-0.6 pts), and it is 25.7 points above its level on the same date a year earlier.
Across the readings we hold for Monroe Lake — 329 data points between June 13, 2021 and June 11, 2026 — the level has ranged from a low of 51.0% (September 18, 2021) to a high of 100.0% (May 30, 2026). On average the reservoir is fullest around May 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, 86.513°W.
Key facts
- Current fill level
- 92.7%
- Water stored
- 407 hm³
- Total capacity
- 439 hm³
- 7-day change
- ▼ 0.6 pts
- Year-on-year
- ▲ 25.7 pts
- Primary use
- Multipurpose
- River basin
- Indiana
- Operator
- USACE
- Coordinates
- 39.008°N, 86.513°W
- Last updated
- June 11, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 11 Jun 2026 | 92.7% | 407 |
| 10 Jun 2026 | 93.3% | 410 |
| 9 Jun 2026 | 93.7% | 412 |
| 8 Jun 2026 | 94.5% | 415 |
| 7 Jun 2026 | 95.5% | 420 |
| 6 Jun 2026 | 96.6% | 425 |
| 5 Jun 2026 | 97.8% | 430 |
| 4 Jun 2026 | 98.8% | 434 |
| 3 Jun 2026 | 99.4% | 437 |
| 2 Jun 2026 | 99.7% | 438 |
| 1 Jun 2026 | 99.7% | 438 |
| 31 May 2026 | 99.8% | 439 |
Frequently asked questions
What is the current water level of Monroe Lake?
As of June 11, 2026, Monroe Lake is at 92.7% of its capacity, holding approximately 407 hm³ of water, according to USACE CWMS (US Army Corps of Engineers) data.
Is Monroe Lake reservoir full?
No. As of June 11, 2026, Monroe Lake is high at 92.7% of its capacity, so it is not full.
Is the water level at Monroe Lake rising or falling?
The level at Monroe Lake has been broadly stable over the latest week on record (-0.6 points).
How much water can Monroe Lake hold?
Monroe Lake has a total capacity of 439 hm³.
Where is Monroe Lake reservoir located?
Monroe Lake is located in Indiana, United States, within the Indiana basin (coordinates 39.008°N, 86.513°W).
What is Monroe Lake used for?
Monroe Lake is used primarily for multiple purposes, and is managed by USACE.