Thompson Lake Dam is an earth dam located in Loudon County, Tennessee, built in 1973. It carries a Significant hazard potential classification.
Dam profile
NID height · 23 ft23 ft tall and 270 ft long. 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 Thompson Lake Dam
The primary purpose of Thompson Lake Dam is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Thompson, B. Ray, Jr. (private). It impounds the Muddy Creek.
The dam stands 23 feet tall and stretches 270 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 41 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1973, 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. The most recent inspection on record was 07/20/2023.
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Location
| State | Tennessee |
| County | Loudon |
| River/Stream | Muddy Creek |
| Coordinates | 35.84194, -84.20389 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 23 ft |
| Dam Length | 270 ft |
| Year Completed | 1973 (53 years old) |
Storage & Hydraulics
| NID Storage | 41 acre-ft |
| Max Storage | 41 acre-ft |
| Normal Storage | 35 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Thompson, B. Ray, Jr. |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 07/20/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TN10511 |
| Federal ID | TN10511 |
| More Info | State Dam Safety Program |