Memphis National Dam is an earth dam located in Shelby County, Tennessee, built in 1947. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 15 ft15 ft tall and 457 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 Memphis National Dam
Memphis National Dam is a dam in Shelby, Tennessee. The dam is owned by Cgpm Managers, LLC (private). It impounds the Trib-wolf River near Germantown.
The dam stands 15 feet tall and stretches 457 feet across, creates a reservoir covering 8 acres, has a maximum storage capacity of 68 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1947, the structure is well-established, with more than 75 years of service.
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 11/26/2025.
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Location
| State | Tennessee |
| County | Shelby |
| Nearest City | Germantown |
| River/Stream | Trib-wolf River |
| Coordinates | 35.07278, -89.72444 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Length | 457 ft |
| Year Completed | 1947 (79 years old) |
Storage & Hydraulics
| NID Storage | 68 acre-ft |
| Max Storage | 68 acre-ft |
| Normal Storage | 38 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Owner | Cgpm Managers, LLC |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 11/26/2025 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TN15751 |
| Federal ID | TN15751 |
| More Info | State Dam Safety Program |