Cumberland Mtn. Lake #3 Dam is an earth dam located in Grundy County, Tennessee, built in 1972. It carries a Low hazard potential classification.
Dam profile
NID height · 25 ft25 ft tall and 925 ft long, taller than 50% 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 Cumberland Mtn. Lake #3 Dam
Cumberland Mtn. Lake #3 Dam is a dam in Grundy, Tennessee. The dam is owned by Afrakhteh, Ardavan (private). It impounds the Mill Creek near Bost Cove.
The dam stands 25 feet tall and stretches 925 feet across, creates a reservoir covering 34 acres, has a maximum storage capacity of 384 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1972, the structure is well into its service life at over 50 years old.
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. The most recent inspection on record was 11/03/2021.
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Location
| State | Tennessee |
| County | Grundy |
| Nearest City | Bost Cove |
| River/Stream | Mill Creek |
| Coordinates | 35.38194, -85.88417 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Length | 925 ft |
| Year Completed | 1972 (54 years old) |
Storage & Hydraulics
| NID Storage | 384 acre-ft |
| Max Storage | 384 acre-ft |
| Normal Storage | 302 acre-ft |
| Surface Area | 34 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Owner | Afrakhteh, Ardavan |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 11/03/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TN06115 |
| Federal ID | TN06115 |
| More Info | State Dam Safety Program |