South Point Dam is an earth dam located in Williamson County, Tennessee, built in 1960. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 21 ft21 ft tall and 275 ft long. 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 South Point Dam
South Point Dam is a dam in Williamson, Tennessee. The dam is owned by South Point HOA (private). It impounds the West Harpeth River near West Harpeth.
The dam stands 21 feet tall and stretches 275 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 67 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1960, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 05/15/2025.
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Location
| State | Tennessee |
| County | Williamson |
| Nearest City | West Harpeth |
| River/Stream | West Harpeth River |
| Coordinates | 35.84556, -86.88694 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Length | 275 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 67 acre-ft |
| Max Storage | 67 acre-ft |
| Normal Storage | 39 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Owner | South Point HOA |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/15/2025 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TN18718 |
| Federal ID | TN18718 |
| More Info | State Dam Safety Program |