Reservoir · Indiana · United States · USACE CWMS
Patoka Lake
79.1% full
Capacity
301.79 hm³
Volume stored
239 hm³
Vs month average
98% of normal
Coordinates
38.434°N, 86.709°W
Last updated
2026-10-28
Current fill
79.1%vs 7 days ago
-1.7 pplosing
vs 1 year ago
N/A7-day trend
↓falling
Drought context
Storage vs October average
98%of normal
79.1% full on 2026-10-28, against an average of 81.0% for October across 2 years of readings (-1.9 points).
Drought Monitor at this site · 20 October 2026
D0abnormally dry
The ground at Patoka 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: 2026-10-28.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 38.434°N, 86.709°W · Open in Google Maps
About Patoka Lake
As of October 28, 2026, Patoka Lake is filled to 79.1% of its total capacity, holding 238.87 hm³ of water out of a maximum 301.79 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has fallen by 1.7 percentage points.
Across the readings we hold for Patoka Lake — 330 data points between October 29, 2021 and October 28, 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 June and at its lowest around February.
It is operated by USACE primarily for multiple purposes. It is at 38.434°N, 86.709°W.
Key facts
- Current fill level
- 79.1% of total capacity
- Water stored
- 238.87 hm³
- Total capacity
- 301.79 hm³
- 7-day change
- ▼ 1.7 pp
- Primary use
- Multipurpose
- Operator
- USACE
- Coordinates
- 38.434°N, 86.709°W
- Last updated
- October 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Oct 2026 | 79.1% | 238.87 |
| 27 Oct 2026 | 79.3% | 239.25 |
| 26 Oct 2026 | 79.5% | 239.84 |
| 25 Oct 2026 | 79.7% | 240.61 |
| 24 Oct 2026 | 80.0% | 241.36 |
| 23 Oct 2026 | 80.2% | 242.15 |
| 22 Oct 2026 | 80.5% | 242.94 |
| 21 Oct 2026 | 80.8% | 243.85 |
| 20 Oct 2026 | 81.1% | 244.79 |
| 19 Oct 2026 | 81.2% | 245.15 |
| 18 Oct 2026 | 81.7% | 246.49 |
| 17 Oct 2026 | 82.0% | 247.37 |