Lake Jed Johnson Dam
Lake Jed Johnson Dam is a gravity dam located in Comanche County, Oklahoma, built in 1938. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Lake Jed Johnson Dam
The primary purpose of Lake Jed Johnson Dam is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Us Fish And Wildlife Service (federal). It impounds the Blue Beaver Creek near Medicine Park, Ok.
The dam stands 58 feet tall and stretches 313 feet across, creates a reservoir covering 32 acres, has a maximum storage capacity of 1,379 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1938, the structure is well-established, with more than 75 years of service.
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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 09/25/2018. That was 7 years ago, which is on the longer end for a high-hazard structure.
At 58 feet, this dam is taller than 95% 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 | Comanche |
| Nearest City | Medicine Park, Ok |
| River/Stream | Blue Beaver Creek |
| Coordinates | 34.72666, -98.59000 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 58 ft |
| Dam Height | 51 ft |
| Dam Length | 313 ft |
| Year Completed | 1938 (88 years old) |
Storage & Hydraulics
| NID Storage | 1,379 acre-ft |
| Max Storage | 1,379 acre-ft |
| Normal Storage | 1,190 acre-ft |
| Surface Area | 32 acres |
| Drainage Area | 5 sq mi |
| Max Discharge | 10,096 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | US FISH AND WILDLIFE SERVICE |
| Owner Type | Federal |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/25/2018 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | OK00464 |
| Federal ID | OK00464 |
| More Info | State Dam Safety Program |