Big Hill Pond Lake Dam
Big Hill Pond Lake Dam is an earth dam located in McNairy County, Tennessee, built in 1977. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Big Hill Pond Lake Dam
Big Hill Pond Lake Dam is a dam in McNairy, Tennessee. The dam is owned by Tdec (state). It impounds the Dismal Branch near Pocahontas.
The dam stands 36 feet tall and stretches 620 feet across, creates a reservoir covering 162 acres, has a maximum storage capacity of 3,330 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1977, the structure is 49 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 06/07/2023.
At 36 feet, this dam is taller than 83% of dams nationwide.
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Location
| State | Tennessee |
| County | McNairy |
| Nearest City | Pocahontas |
| River/Stream | Dismal Branch |
| Coordinates | 35.04583, -88.73278 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 36 ft |
| Dam Length | 620 ft |
| Year Completed | 1977 (49 years old) |
Storage & Hydraulics
| NID Storage | 3,330 acre-ft |
| Max Storage | 3,330 acre-ft |
| Normal Storage | 2,440 acre-ft |
| Surface Area | 162 acres |
| Drainage Area | 1 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Owner | Tdec |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/07/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TN10906 |
| Federal ID | TN10906 |
| More Info | State Dam Safety Program |