Porters Creek #7 Dam
Porters Creek #7 Dam is an earth dam located in Hardeman County, Tennessee, built in 1964. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Porters Creek #7 Dam
Porters Creek #7 Dam is a dam in Hardeman, Tennessee. The dam is owned by Wtrba (state). It impounds the Moore Branch near Lisbon.
The dam stands 26 feet tall and stretches 1,065 feet across, creates a reservoir covering 39 acres, has a maximum storage capacity of 1,338 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1964, 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 05/09/2025.
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Location
| State | Tennessee |
| County | Hardeman |
| Nearest City | Lisbon |
| River/Stream | Moore Branch |
| Coordinates | 35.03389, -88.98083 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Length | 1,065 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 1,338 acre-ft |
| Max Storage | 1,338 acre-ft |
| Normal Storage | 126 acre-ft |
| Surface Area | 39 acres |
| Drainage Area | 3 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Owner | Wtrba |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/09/2025 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TN06922 |
| Federal ID | TN06922 |
| More Info | State Dam Safety Program |