Reservoir · Indiana · United States · USACE CWMS
Patoka Lake
88.9% full
Capacity
301.79 hm³
Volume stored
268 hm³
Coordinates
38.434°N, 86.709°W
Last updated
2026-09-11
Current fill
88.9%vs 7 days ago
-0.8%losing
vs 1 year ago
N/A7-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: 2026-09-11.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 38.434, -86.709 · Open in Google Maps
About Patoka Lake
As of September 11, 2026, Patoka Lake is filled to 88.9% of its total capacity, holding roughly 268 hm³ of water out of a maximum 302 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (-0.8 pts).
Across the readings we hold for Patoka Lake — 330 data points between September 12, 2021 and September 11, 2026 — the level has ranged from a low of 60.0% (February 1, 2022) to a high of 100.0% (June 30, 2026). On average the reservoir is fullest around July and at its lowest around February.
It is operated by USACE primarily for multiple purposes. It lies within the Indiana basin at 38.434°N, 86.709°W.
Key facts
- Current fill level
- 88.9%
- Water stored
- 268 hm³
- Total capacity
- 302 hm³
- 7-day change
- ▼ 0.8 pts
- Primary use
- Multipurpose
- River basin
- Indiana
- Operator
- USACE
- Coordinates
- 38.434°N, 86.709°W
- Last updated
- September 11, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 11 Sep 2026 | 88.9% | 268 |
| 10 Sep 2026 | 88.9% | 268 |
| 9 Sep 2026 | 88.5% | 267 |
| 8 Sep 2026 | 88.5% | 267 |
| 7 Sep 2026 | 88.7% | 268 |
| 6 Sep 2026 | 89.1% | 269 |
| 5 Sep 2026 | 89.4% | 270 |
| 4 Sep 2026 | 89.7% | 271 |
| 3 Sep 2026 | 90.0% | 272 |
| 2 Sep 2026 | 90.3% | 272 |
| 1 Sep 2026 | 90.6% | 273 |
| 31 Aug 2026 | 90.8% | 274 |