Reservoir · Oklahoma · United States · USACE CWMS
Fort Gibson Lake
44.7% full
Capacity
1,009.66 hm³
Volume stored
451 hm³
Coordinates
35.871°N, 95.229°W
Last updated
2026-08-14
Current fill
44.7%vs 7 days ago
+1.6%gaining
vs 1 year ago
N/A7-day trend
↑rising
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: 2026-08-14.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 35.871, -95.229 · Open in Google Maps
About Fort Gibson Lake
As of August 14, 2026, Fort Gibson Lake is filled to 44.7% of its total capacity, holding roughly 451 hm³ of water out of a maximum 1,010 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has risen by 1.6 percentage points.
Across the readings we hold for Fort Gibson Lake — 330 data points between August 15, 2021 and August 14, 2026 — the level has ranged from a low of 42.2% (January 26, 2022) to a high of 100.0% (June 28, 2026). On average the reservoir is fullest around June and at its lowest around August.
It is operated by USACE primarily for multiple purposes. It lies within the Oklahoma basin at 35.871°N, 95.229°W.
Key facts
- Current fill level
- 44.7%
- Water stored
- 451 hm³
- Total capacity
- 1,010 hm³
- 7-day change
- ▲ 1.6 pts
- Primary use
- Multipurpose
- River basin
- Oklahoma
- Operator
- USACE
- Coordinates
- 35.871°N, 95.229°W
- Last updated
- August 14, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 14 Aug 2026 | 44.7% | 451 |
| 13 Aug 2026 | 43.8% | 443 |
| 12 Aug 2026 | 43.1% | 435 |
| 11 Aug 2026 | 43.3% | 438 |
| 10 Aug 2026 | 43.5% | 439 |
| 9 Aug 2026 | 43.3% | 437 |
| 8 Aug 2026 | 43.2% | 436 |
| 7 Aug 2026 | 43.1% | 435 |
| 6 Aug 2026 | 43.2% | 436 |
| 5 Aug 2026 | 43.2% | 436 |
| 4 Aug 2026 | 43.4% | 438 |
| 3 Aug 2026 | 43.5% | 440 |
Frequently asked questions
What is the current water level of Fort Gibson Lake?
As of August 14, 2026, Fort Gibson Lake is at 44.7% of its capacity, holding approximately 451 hm³ of water, according to USACE CWMS (US Army Corps of Engineers) data.
Is Fort Gibson Lake reservoir full?
No. As of August 14, 2026, Fort Gibson Lake is within its normal operating range at 44.7% of its capacity, so it is not full.
Is the water level at Fort Gibson Lake rising or falling?
The level at Fort Gibson Lake is rising — it gained 1.6 percentage points over the latest week on record.
How much water can Fort Gibson Lake hold?
Fort Gibson Lake has a total capacity of 1,010 hm³.
Where is Fort Gibson Lake reservoir located?
Fort Gibson Lake is located in Oklahoma, United States, within the Oklahoma basin (coordinates 35.871°N, 95.229°W).
What is Fort Gibson Lake used for?
Fort Gibson Lake is used primarily for multiple purposes, and is managed by USACE.