Southmark Lake Dam is an earth dam located in Dawson County, Georgia, built in 1940. It carries a Undetermined hazard potential classification.
Dam profile
NID height · 46 ft46 ft tall and 267 ft long, taller than 91% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About Southmark Lake Dam
The primary purpose of Southmark Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Wimberly, Michael & Suzanne (private). It impounds the Unknown near Dawsonville.
The dam stands 46 feet tall and stretches 267 feet across, creates a reservoir covering 15 acres, has a maximum storage capacity of 325 acre-feet, and collects water from a drainage area of 630 square miles. Completed in 1940, the structure is well-established, with more than 75 years of service.
At 46 feet, this dam is taller than 91% of dams nationwide.
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Location
| State | Georgia |
| County | Dawson |
| Nearest City | Dawsonville |
| River/Stream | Unknown |
| Coordinates | 34.52500, -84.31194 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 46 ft |
| Dam Height | 46 ft |
| Dam Length | 267 ft |
| Year Completed | 1940 (86 years old) |
Storage & Hydraulics
| NID Storage | 325 acre-ft |
| Max Storage | 325 acre-ft |
| Normal Storage | 251 acre-ft |
| Surface Area | 15 acres |
| Drainage Area | 630 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Wimberly, Michael & Suzanne |
| Owner Type | Private |
| Hazard Classification | Undetermined |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | GA04204 |
| Federal ID | GA04204 |
| More Info | State Dam Safety Program |