Reservoir · Oklahoma · United States · USACE CWMS
Ft. Cobb Lake
87.3% full
Capacity
98.69 hm³
Volume stored
86 hm³
Coordinates
35.165°N, 98.462°W
Last updated
2026-06-11
Current fill
87.3%vs 7 days ago
0.0%stable
vs 1 year ago
-3.0%year-over-year
7-day trend
→stable
Data source: USACE CWMS — US Army Corps of Engineers — daily reservoir storage volume. Capacity is the design (normal full-pool) capacity from the US National Inventory of Dams (NID); fill % = current volume ÷ design capacity. 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. 35.165, -98.462 · Open in Google Maps
About Ft. Cobb Lake
As of June 11, 2026, Ft. Cobb Lake is filled to 87.3% of its total capacity, holding roughly 86 hm³ of water out of a maximum 99 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (+0.0 pts), and it is 3.0 points below its level on the same date a year earlier.
Across the readings we hold for Ft. Cobb Lake — 273 data points between February 6, 2024 and June 11, 2026 — the level has ranged from a low of 80.5% (September 1, 2024) to a high of 90.9% (May 17, 2024). On average the reservoir is fullest around April and at its lowest around September.
It is operated by USACE primarily for multiple purposes. It lies within the Oklahoma basin at 35.165°N, 98.462°W.
Key facts
- Current fill level
- 87.3%
- Water stored
- 86 hm³
- Total capacity
- 99 hm³
- 7-day change
- No change
- Year-on-year
- ▼ 3.0 pts
- Primary use
- Multipurpose
- River basin
- Oklahoma
- Operator
- USACE
- Coordinates
- 35.165°N, 98.462°W
- Last updated
- June 11, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 11 Jun 2026 | 87.3% | 86 |
| 10 Jun 2026 | 87.3% | 86 |
| 9 Jun 2026 | 87.5% | 86 |
| 8 Jun 2026 | 87.6% | 87 |
| 7 Jun 2026 | 87.7% | 87 |
| 6 Jun 2026 | 87.7% | 87 |
| 5 Jun 2026 | 87.6% | 86 |
| 4 Jun 2026 | 87.5% | 86 |
| 3 Jun 2026 | 87.6% | 87 |
| 2 Jun 2026 | 87.8% | 87 |
| 1 Jun 2026 | 87.9% | 87 |
| 31 May 2026 | 88.0% | 87 |
Frequently asked questions
What is the current water level of Ft. Cobb Lake?
As of June 11, 2026, Ft. Cobb Lake is at 87.3% of its capacity, holding approximately 86 hm³ of water, according to USACE CWMS (US Army Corps of Engineers) data.
Is Ft. Cobb Lake reservoir full?
No. As of June 11, 2026, Ft. Cobb Lake is high at 87.3% of its capacity, so it is not full.
Is the water level at Ft. Cobb Lake rising or falling?
The level at Ft. Cobb Lake has been broadly stable over the latest week on record (0.0 points).
How much water can Ft. Cobb Lake hold?
Ft. Cobb Lake has a total capacity of 99 hm³.
Where is Ft. Cobb Lake reservoir located?
Ft. Cobb Lake is located in Oklahoma, United States, within the Oklahoma basin (coordinates 35.165°N, 98.462°W).
What is Ft. Cobb Lake used for?
Ft. Cobb Lake is used primarily for multiple purposes, and is managed by USACE.