New Lewisburg Lake Dam
New Lewisburg Lake Dam is an earth dam located in Marshall County, Tennessee, built in 1925. It carries a High hazard potential classification and has a satisfactory condition assessment.
About New Lewisburg Lake Dam
The primary purpose of New Lewisburg Lake 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 New Lake Branch near Lewisburg.
The dam stands 34 feet tall and stretches 572 feet across, creates a reservoir covering 22 acres, has a maximum storage capacity of 565 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1925, the structure is over a century old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 01/29/2025.
At 34 feet, this dam is taller than 80% of dams nationwide.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Tennessee dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Tennessee |
| County | Marshall |
| Nearest City | Lewisburg |
| River/Stream | New Lake Branch |
| Coordinates | 35.40278, -86.83750 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Length | 572 ft |
| Year Completed | 1925 (101 years old) |
Storage & Hydraulics
| NID Storage | 565 acre-ft |
| Max Storage | 565 acre-ft |
| Normal Storage | 340 acre-ft |
| Surface Area | 22 acres |
| Drainage Area | 1 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | City Of Lewisburg |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 01/29/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | TN11703 |
| Federal ID | TN11703 |
| More Info | State Dam Safety Program |