Lake Dimmick Dam
Lake Dimmick Dam is an earth dam located in Franklin County, Tennessee, built in 1971. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Lake Dimmick Dam
The primary purpose of Lake Dimmick Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by The University Of The South (private). It impounds the Bethel Creek near South Pittsburg.
The dam stands 44 feet tall and stretches 810 feet across, creates a reservoir covering 89 acres, has a maximum storage capacity of 2,450 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1971, 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. 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 07/02/2024.
At 44 feet, this dam is taller than 90% 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 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 | Franklin |
| Nearest City | South Pittsburg |
| River/Stream | Bethel Creek |
| Coordinates | 35.18472, -85.87139 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 44 ft |
| Dam Length | 810 ft |
| Year Completed | 1971 (55 years old) |
Storage & Hydraulics
| NID Storage | 2,450 acre-ft |
| Max Storage | 2,450 acre-ft |
| Normal Storage | 1,205 acre-ft |
| Surface Area | 89 acres |
| Drainage Area | 1 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | The University Of The South |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/02/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | TN05106 |
| Federal ID | TN05106 |
| More Info | State Dam Safety Program |