Shellcracker Lake Dam is an earth dam located in Maury County, Tennessee, built in 1970. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 110 ft110 ft tall and 800 ft long, taller than 98% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About Shellcracker Lake Dam
Shellcracker Lake Dam is a dam in Maury, Tennessee. The dam is owned by Twra (private). It impounds the Trib-duck River near Williamsport.
The dam stands 110 feet tall and stretches 800 feet across, creates a reservoir covering 57 acres, has a maximum storage capacity of 2,508 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1970, 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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 02/12/2024.
At 110 feet, this dam is taller than 98% of all dams in the United States.
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Location
| State | Tennessee |
| County | Maury |
| Nearest City | Williamsport |
| River/Stream | Trib-duck River |
| Coordinates | 35.70056, -87.21722 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 110 ft |
| Dam Length | 800 ft |
| Year Completed | 1970 (56 years old) |
Storage & Hydraulics
| NID Storage | 2,508 acre-ft |
| Max Storage | 2,508 acre-ft |
| Normal Storage | 2,205 acre-ft |
| Surface Area | 57 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Owner | Twra |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 02/12/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TN11914 |
| Federal ID | TN11914 |
| More Info | State Dam Safety Program |