Upper Twin Mountain Lake Dam
Upper Twin Mountain Lake Dam is an earth dam located in Pickens County, Georgia, built in 1955. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Upper Twin Mountain Lake Dam
The primary purpose of Upper Twin 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 Twin Mountain Lakes Club, Inc. (private). It impounds the Unknown near Talking Rock Environs.
The dam stands 36 feet tall and stretches 554 feet across, creates a reservoir covering 18 acres, has a maximum storage capacity of 332 acre-feet, and collects water from a drainage area of 376 square miles. Completed in 1955, the structure is well into its service life at over 50 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 01/24/2017. That was 9 years ago, which is on the longer end for a high-hazard structure.
At 36 feet, this dam is taller than 83% of dams nationwide.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Georgia dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Georgia |
| County | Pickens |
| Nearest City | Talking Rock Environs |
| River/Stream | Unknown |
| Coordinates | 34.49885, -84.46411 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 36 ft |
| Dam Height | 36 ft |
| Dam Length | 554 ft |
| Year Completed | 1955 (71 years old) |
Storage & Hydraulics
| NID Storage | 332 acre-ft |
| Max Storage | 332 acre-ft |
| Normal Storage | 256 acre-ft |
| Surface Area | 18 acres |
| Drainage Area | 376 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Twin Mountain Lakes Club, Inc. |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 01/24/2017 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | GA00681 |
| Federal ID | GA00681 |
| More Info | State Dam Safety Program |