Aberdeen Lock And Dam
Aberdeen Lock And Dam is a gravity dam located in Monroe County, Mississippi, built in 1984. It carries a Significant hazard potential classification.
About Aberdeen Lock And Dam
The primary purpose of Aberdeen Lock And Dam is navigation. The dam maintains water levels sufficient for boat and barge traffic, supporting commercial or recreational navigation on the waterway. The dam is owned by Usace - Mobile District (federal). It impounds the Tombigbee near Aberdeen.
The dam stands 66 feet tall and stretches 500 feet across, creates a reservoir covering 4,121 acres, has a maximum storage capacity of 31,564 acre-feet, and collects water from a drainage area of 2,047 square miles. Completed in 1984, the structure is 42 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 06/24/2025.
At 66 feet, this dam is taller than 96% of all dams in the United States.
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Location
| State | Mississippi |
| County | Monroe |
| Nearest City | Aberdeen |
| River/Stream | Tombigbee |
| Coordinates | 33.83071, -88.51939 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 66 ft |
| Dam Length | 500 ft |
| Year Completed | 1984 (42 years old) |
Storage & Hydraulics
| NID Storage | 31,564 acre-ft |
| Max Storage | 31,564 acre-ft |
| Normal Storage | 31,564 acre-ft |
| Surface Area | 4,121 acres |
| Drainage Area | 2,047 sq mi |
| Max Discharge | 349,400 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Navigation |
| Owner | USACE - Mobile District |
| Owner Type | Federal |
| Hazard Classification | Significant |
| Condition Assessment | Not Available |
| Last Inspection | 06/24/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MS03057 |
| Federal ID | MS03057 |
| More Info | State Dam Safety Program |