Scs-cobb Creek Site-001
Scs-cobb Creek Site-001 is an earth dam located in Washita County, Oklahoma, built in 1959. It carries a High hazard potential classification.
About Scs-cobb Creek Site-001
The primary purpose of Scs-cobb Creek Site-001 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 Washita Co Cons Dist (state). It impounds the Cobb Creek near Colony.
The dam stands 80 feet tall and stretches 11,850 feet across, creates a reservoir covering 158 acres, has a maximum storage capacity of 14,200 acre-feet, and collects water from a drainage area of 26 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 01/01/2012. That was 14 years ago — unusually long for a high-hazard dam, which typically requires more frequent inspections.
At 80 feet, this dam is taller than 97% 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 | Washita |
| Nearest City | Colony |
| River/Stream | Cobb Creek |
| Coordinates | 35.39464, -98.70017 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 80 ft |
| Dam Height | 80 ft |
| Dam Length | 11,850 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 14,200 acre-ft |
| Max Storage | 14,200 acre-ft |
| Normal Storage | 2,094 acre-ft |
| Surface Area | 158 acres |
| Drainage Area | 26 sq mi |
| Max Discharge | 58,200 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | WASHITA CO CONS DIST |
| Owner Type | State |
| Hazard Classification | High |
| Condition Assessment | Not Rated |
| Last Inspection | 01/01/2012 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | OK20570 |
| Federal ID | OK20570 |
| More Info | State Dam Safety Program |