Fort Cobb Dam is an earth dam located in Caddo County, Oklahoma, built in 1959. It carries a High hazard potential classification.
Dam profile
NID height · 122 ft122 ft tall and 9,900 ft long, taller than 98% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About Fort Cobb Dam
The primary purpose of Fort Cobb Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Bureau of Reclamation (federal). It impounds the Cobb Cr near Fort Cobb.
The dam stands 122 feet tall and stretches 9,900 feet across, creates a reservoir covering 5,882 acres, has a maximum storage capacity of 292,390 acre-feet, and collects water from a drainage area of 308 square miles. Completed in 1959, the structure is well into its service life at over 50 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. An emergency action plan is in place for this dam. The most recent inspection on record was 04/28/2021.
At 122 feet, this dam is taller than 98% of all dams in the United States.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Oklahoma dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Oklahoma |
| County | Caddo |
| Nearest City | Fort Cobb |
| River/Stream | Cobb Cr |
| Coordinates | 35.16110, -98.45490 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 122 ft |
| Dam Height | 101 ft |
| Dam Length | 9,900 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 292,390 acre-ft |
| Max Storage | 292,390 acre-ft |
| Normal Storage | 80,010 acre-ft |
| Surface Area | 5,882 acres |
| Drainage Area | 308 sq mi |
| Max Discharge | 3,050 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Bureau of Reclamation |
| Owner Type | Federal |
| Hazard Classification | High |
| Condition Assessment | Not assessed |
| Last Inspection | 04/28/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | OK02502 |
| Federal ID | OK02502 |
| More Info | State Dam Safety Program |