Lillard Mill Dam
Lillard Mill Dam is a concrete dam located in Marshall County, Tennessee, built in 1928. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Lillard Mill Dam
The primary purpose of Lillard Mill Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by City Of Lewisburg (local government). It impounds the Duck River.
The dam stands 16 feet tall and stretches 219 feet across, creates a reservoir covering 54 acres, has a maximum storage capacity of 556 acre-feet, and collects water from a drainage area of 918 square miles. Completed in 1928, 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 08/31/2023.
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Location
| State | Tennessee |
| County | Marshall |
| River/Stream | Duck River |
| Coordinates | 35.58667, -86.78444 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 16 ft |
| Dam Length | 219 ft |
| Year Completed | 1928 (98 years old) |
Storage & Hydraulics
| NID Storage | 556 acre-ft |
| Max Storage | 556 acre-ft |
| Normal Storage | 342 acre-ft |
| Surface Area | 54 acres |
| Drainage Area | 918 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | City Of Lewisburg |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/31/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TN11708 |
| Federal ID | TN11708 |
| More Info | State Dam Safety Program |