Big Piney Lake Dam is an earth dam located in Hickman County, Tennessee, built in 1990. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 39 ft39 ft tall and 458 ft long, taller than 85% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Big Piney Lake Dam
Big Piney Lake Dam is a dam in Hickman, Tennessee. The dam is owned by Hidden Valley Lakes Corp. (private). It impounds the Trib-beaver Creek near Nunnelly.
The dam stands 39 feet tall and stretches 458 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 83 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1990, the structure is 36 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 02/20/2024.
At 39 feet, this dam is taller than 85% of dams nationwide.
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Location
| State | Tennessee |
| County | Hickman |
| Nearest City | Nunnelly |
| River/Stream | Trib-beaver Creek |
| Coordinates | 35.91667, -87.50639 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 39 ft |
| Dam Length | 458 ft |
| Year Completed | 1990 (36 years old) |
Storage & Hydraulics
| NID Storage | 83 acre-ft |
| Max Storage | 83 acre-ft |
| Normal Storage | 51 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Owner | Hidden Valley Lakes Corp. |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 02/20/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TN08111 |
| Federal ID | TN08111 |
| More Info | State Dam Safety Program |