Johnson Creek #10 Dam is an earth dam located in Madison County, Tennessee, built in 1959. It carries a High hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall and 460 ft long, taller than 68% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Johnson Creek #10 Dam
Johnson Creek #10 Dam is a dam in Madison, Tennessee. The dam is owned by Thompson, Jim (private). It impounds the Little Johnson Creek near Oak Grove.
The dam stands 30 feet tall and stretches 460 feet across, creates a reservoir covering 18 acres, has a maximum storage capacity of 386 acre-feet, and collects water from a drainage area of 0 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 02/12/2020.
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 Tennessee 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 | Tennessee |
| County | Madison |
| Nearest City | Oak Grove |
| River/Stream | Little Johnson Creek |
| Coordinates | 35.50694, -88.91889 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Length | 460 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 386 acre-ft |
| Max Storage | 386 acre-ft |
| Normal Storage | 84 acre-ft |
| Surface Area | 18 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Owner | Thompson, Jim |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Not assessed |
| Last Inspection | 02/12/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | TN11307 |
| Federal ID | TN11307 |
| More Info | State Dam Safety Program |