Wewoka
Wewoka is an earth dam located in Seminole County, Oklahoma, built in 1925. It carries a High hazard potential classification and has a poor condition assessment.
About Wewoka
The primary purpose of Wewoka is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by City Of Wewoka (local government). It impounds the Coon Creek near Wewoka.
The dam stands 38 feet tall and stretches 1,050 feet across, creates a reservoir covering 371 acres, has a maximum storage capacity of 9,070 acre-feet, and collects water from a drainage area of 16 square miles. Completed in 1925, the structure is over a century 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. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 12/02/2021.
At 38 feet, this dam is taller than 85% of dams nationwide.
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 | Seminole |
| Nearest City | Wewoka |
| River/Stream | Coon Creek |
| Coordinates | 35.18133, -96.52689 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 38 ft |
| Dam Height | 38 ft |
| Dam Length | 1,050 ft |
| Year Completed | 1925 (101 years old) |
Storage & Hydraulics
| NID Storage | 9,070 acre-ft |
| Max Storage | 9,070 acre-ft |
| Normal Storage | 3,301 acre-ft |
| Surface Area | 371 acres |
| Drainage Area | 16 sq mi |
| Max Discharge | 35,000 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | CITY OF WEWOKA |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 12/02/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | OK10487 |
| Federal ID | OK10487 |
| More Info | State Dam Safety Program |