Dunbar Dam is an earth dam located in Montgomery County, Tennessee, built in 1950. It carries a Low hazard potential classification and has a unsatisfactory condition assessment.
Dam profile
NID height · 11 ft11 ft tall and 730 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 Dunbar Dam
Dunbar Dam is a dam in Montgomery, Tennessee. The dam is owned by Tdec (state). It impounds the Dunbar Cave.
The dam stands 11 feet tall and stretches 730 feet across, creates a reservoir covering 14 acres, has a maximum storage capacity of 180 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1950, the structure is well-established, with more than 75 years of service.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated unsatisfactory, indicating serious safety deficiencies exist that require immediate attention or remedial action. The most recent inspection on record was 09/01/2017.
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Location
| State | Tennessee |
| County | Montgomery |
| River/Stream | Dunbar Cave |
| Coordinates | 36.55000, -87.30417 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Length | 730 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 180 acre-ft |
| Max Storage | 180 acre-ft |
| Normal Storage | 162 acre-ft |
| Surface Area | 14 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Owner | Tdec |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Unsatisfactory |
| Last Inspection | 09/01/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TN12504 |
| Federal ID | TN12504 |
| More Info | State Dam Safety Program |