Allen Fossil Plant - Ash Disposal Area Perimeter Dike (east)
Allen Fossil Plant - Ash Disposal Area Perimeter Dike (east) is an earth dam located in Shelby County, Tennessee, built in 1967. It carries a Significant hazard potential classification.
About Allen Fossil Plant - Ash Disposal Area Perimeter Dike (east)
Allen Fossil Plant - Ash Disposal Area Perimeter Dike (east) is a dam in Shelby, Tennessee. The dam is owned by Tva (federal). It impounds the Tennessee River - Offstream near Memphis.
The dam stands 23 feet tall and stretches 6,966 feet across, creates a reservoir covering 80 acres, has a maximum storage capacity of 353 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1967, 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. An emergency action plan is in place for this dam. The most recent inspection on record was 07/23/2025.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Tennessee |
| County | Shelby |
| Nearest City | Memphis |
| River/Stream | Tennessee River - Offstream |
| Coordinates | 35.07200, -90.13300 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 23 ft |
| Dam Height | 23 ft |
| Dam Length | 6,966 ft |
| Year Completed | 1967 (59 years old) |
Storage & Hydraulics
| NID Storage | 353 acre-ft |
| Max Storage | 353 acre-ft |
| Normal Storage | 98 acre-ft |
| Surface Area | 80 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 393 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Other |
| Owner | TVA |
| Owner Type | Federal |
| Hazard Classification | Significant |
| Condition Assessment | Not Available |
| Last Inspection | 07/23/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | TN15801 |
| Federal ID | TN15801 |
| More Info | State Dam Safety Program |