Middlebrook Dam is an earth dam located in Sullivan County, Tennessee, built in 1971. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 17 ft17 ft tall and 1,625 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 Middlebrook Dam
Middlebrook Dam is a dam in Sullivan, Tennessee. The dam is owned by Middlebrook H.o.a. (private). It impounds the Sinking Creek.
The dam stands 17 feet tall and stretches 1,625 feet across, creates a reservoir covering 22 acres, has a maximum storage capacity of 222 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1971, 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 05/16/2024.
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Location
| State | Tennessee |
| County | Sullivan |
| River/Stream | Sinking Creek |
| Coordinates | 36.58944, -82.13472 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Length | 1,625 ft |
| Year Completed | 1971 (55 years old) |
Storage & Hydraulics
| NID Storage | 222 acre-ft |
| Max Storage | 222 acre-ft |
| Normal Storage | 110 acre-ft |
| Surface Area | 22 acres |
| Drainage Area | 5 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Owner | Middlebrook H.o.a. |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/16/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TN16303 |
| Federal ID | TN16303 |
| More Info | State Dam Safety Program |