Greene Mountain Lake Dam
Greene Mountain Lake Dam is an earth dam located in Greene County, Virginia, built in 1969. It carries a Significant hazard potential classification and has a poor condition assessment.
About Greene Mountain Lake Dam
The primary purpose of Greene Mountain Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Nathaniel Greene Development Company (private). It impounds the Unnamed Tributary To Blue Run - Vahu6 Jr10 Swift Run near Stanardsville.
The dam stands 37 feet tall and stretches 450 feet across, creates a reservoir covering 61 acres, has a maximum storage capacity of 1,408 acre-feet, and collects water from a drainage area of 7 square miles. Completed in 1969, 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 02/25/2022.
At 37 feet, this dam is taller than 84% of dams nationwide.
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Location
| State | Virginia |
| County | Greene |
| Nearest City | Stanardsville |
| River/Stream | Unnamed Tributary To Blue Run - Vahu6 Jr10 Swift Run |
| Coordinates | 38.27030, -78.43700 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 37 ft |
| Dam Height | 37 ft |
| Dam Length | 450 ft |
| Year Completed | 1969 (57 years old) |
Storage & Hydraulics
| NID Storage | 1,408 acre-ft |
| Max Storage | 1,408 acre-ft |
| Normal Storage | 508 acre-ft |
| Surface Area | 61 acres |
| Drainage Area | 7 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Nathaniel Greene Development Company |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 02/25/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | VA079014 |
| Federal ID | VA079014 |
| More Info | State Dam Safety Program |