Reservoir · Oklahoma · United States · USACE CWMS
Ft. Cobb Lake
83.7% full
Capacity
98.69 hm³
Volume stored
83 hm³
Coordinates
35.165°N, 98.462°W
Last updated
2026-07-30
Current fill
83.7%vs 7 days ago
0.0%stable
vs 1 year ago
-4.0%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: 2026-07-30.
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 July 30, 2026, Ft. Cobb Lake is filled to 83.7% of its total capacity, holding roughly 83 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 4.0 points below its level on the same date a year earlier.
Across the readings we hold for Ft. Cobb Lake — 53 data points between June 6, 2026 and July 30, 2026 — the level has ranged from a low of 83.7% (July 29, 2026) to a high of 87.7% (June 6, 2026).
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
- 83.7%
- Water stored
- 83 hm³
- Total capacity
- 99 hm³
- 7-day change
- No change
- Year-on-year
- ▼ 4.0 pts
- Primary use
- Multipurpose
- River basin
- Oklahoma
- Operator
- USACE
- Coordinates
- 35.165°N, 98.462°W
- Last updated
- July 30, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 30 Jul 2026 | 83.7% | 83 |
| 29 Jul 2026 | 83.7% | 83 |
| 28 Jul 2026 | 83.9% | 83 |
| 27 Jul 2026 | 84.0% | 83 |
| 26 Jul 2026 | 84.1% | 83 |
| 25 Jul 2026 | 84.3% | 83 |
| 24 Jul 2026 | 84.4% | 83 |
| 23 Jul 2026 | 84.6% | 83 |
| 22 Jul 2026 | 84.8% | 84 |
| 21 Jul 2026 | 84.9% | 84 |
| 20 Jul 2026 | 85.0% | 84 |
| 19 Jul 2026 | 85.2% | 84 |
Frequently asked questions
What is the current water level of Ft. Cobb Lake?
As of July 30, 2026, Ft. Cobb Lake is at 83.7% of its capacity, holding approximately 83 hm³ of water, according to USACE CWMS (US Army Corps of Engineers) data.
Is Ft. Cobb Lake reservoir full?
No. As of July 30, 2026, Ft. Cobb Lake is high at 83.7% 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.