Reservoir · Oklahoma · United States · USACE CWMS
Oologah Lake
52.2% full
Capacity
1,251.85 hm³
Volume stored
653 hm³
Vs month average
100% of normal
Coordinates
36.422°N, 95.679°W
Last updated
2026-10-28
Current fill
52.2%vs 7 days ago
-0.3 pplosing
vs 1 year ago
N/A7-day trend
→stable
Drought context
Storage vs October average
100%of normal
52.2% full on 2026-10-28, against an average of 52.0% for October across 2 years of readings (+0.2 points).
Drought Monitor at this site · 20 October 2026
D2severe drought
The ground at Oologah Lake's coordinates falls inside the D2 area of the weekly U.S. Drought Monitor map. That describes local conditions — rainfall, soil moisture, streamflow — not the reservoir's storage. Oklahoma 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. 36.422°N, 95.679°W · Open in Google Maps
About Oologah Lake
As of October 28, 2026, Oologah Lake is filled to 52.2% of its total capacity, holding 653.32 hm³ of water out of a maximum 1,252 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 Oologah Lake — 330 data points between October 29, 2021 and October 28, 2026 — the level has ranged from a low of 45.9% (April 10, 2022) to a high of 100.0% (June 30, 2026). On average the reservoir is fullest around June and at its lowest around April.
It is operated by USACE primarily for multiple purposes. It is at 36.422°N, 95.679°W.
Key facts
- Current fill level
- 52.2% of total capacity
- Water stored
- 653.32 hm³
- Total capacity
- 1,252 hm³
- 7-day change
- ▼ 0.3 pp
- Primary use
- Multipurpose
- Operator
- USACE
- Coordinates
- 36.422°N, 95.679°W
- Last updated
- October 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Oct 2026 | 52.2% | 653.32 |
| 27 Oct 2026 | 52.3% | 654.46 |
| 26 Oct 2026 | 52.3% | 655.21 |
| 25 Oct 2026 | 52.4% | 655.97 |
| 24 Oct 2026 | 52.4% | 656.35 |
| 23 Oct 2026 | 52.4% | 656.35 |
| 22 Oct 2026 | 52.5% | 656.73 |
| 21 Oct 2026 | 52.5% | 657.49 |
| 20 Oct 2026 | 52.6% | 657.87 |
| 19 Oct 2026 | 52.5% | 657.49 |
| 18 Oct 2026 | 52.5% | 657.49 |
| 17 Oct 2026 | 52.6% | 659.01 |