Reservoir · Oklahoma · United States · BOR RISE
Fort Cobb Reservoir
Fort Cobb Reservoir and Dam
92.8% full
Capacity
98.69 hm³
Volume stored
92 hm³
Vs month average
111% of normal
Coordinates
35.167°N, 98.450°W
Last updated
2026-10-27
Current fill
92.8%vs 7 days ago
+1.6 ppgaining
vs 1 year ago
+2.4 ppyear-over-year
7-day trend
↑rising
Drought context
Storage vs October average
111%of normal
92.8% full on 2026-10-27, against an average of 83.4% for October across 6 years of readings (+9.4 points).
Drought Monitor at this site · 20 October 2026
D2severe drought
The ground at Fort Cobb Reservoir'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: BOR RISE — US Bureau of Reclamation — 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: 2026-10-27.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 35.167°N, 98.450°W · Open in Google Maps
About Fort Cobb Reservoir
As of October 27, 2026, Fort Cobb Reservoir is filled to 92.8% of its total capacity, holding 91.56 hm³ of water out of a maximum 98.69 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has risen by 1.6 percentage points, and it is 2.4 points above its level on the same date a year earlier.
Across the readings we hold for Fort Cobb Reservoir — 1816 data points between October 29, 2021 and October 27, 2026 — the level has ranged from a low of 73.9% (October 11, 2026) to a high of 104.7% (June 18, 2022). On average the reservoir is fullest around June and at its lowest around October.
It is operated by BOR primarily for multiple purposes. It is at 35.167°N, 98.450°W.
Key facts
- Current fill level
- 92.8% of total capacity
- Water stored
- 91.56 hm³
- Total capacity
- 98.69 hm³
- 7-day change
- ▲ 1.6 pp
- Year-on-year
- ▲ 2.4 pp
- Primary use
- Multipurpose
- Operator
- BOR
- Coordinates
- 35.167°N, 98.450°W
- Last updated
- October 27, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 27 Oct 2026 | 92.8% | 91.56 |
| 26 Oct 2026 | 92.8% | 91.56 |
| 25 Oct 2026 | 92.7% | 91.51 |
| 24 Oct 2026 | 92.7% | 91.46 |
| 23 Oct 2026 | 92.6% | 91.36 |
| 22 Oct 2026 | 92.4% | 91.17 |
| 21 Oct 2026 | 91.9% | 90.74 |
| 20 Oct 2026 | 91.2% | 90.03 |
| 19 Oct 2026 | 90.4% | 89.18 |
| 18 Oct 2026 | 89.5% | 88.3 |
| 17 Oct 2026 | 88.5% | 87.37 |
| 16 Oct 2026 | 87.4% | 86.27 |