Byrnes Lake Dam is an earth dam located in Gwinnett County, Georgia. It carries a Low hazard potential classification.
Dam profile
NID height · 40 ft40 ft tall and 318 ft long, taller than 86% 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 Byrnes Lake Dam
The primary purpose of Byrnes Lake Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Agio Corporation (private). It impounds the Unknown.
The dam stands 40 feet tall and stretches 318 feet across, creates a reservoir covering 5 acres, and has a maximum storage capacity of 53 acre-feet.
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 03/01/1989. That was over 37 years ago.
At 40 feet, this dam is taller than 86% of dams nationwide.
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Location
| State | Georgia |
| County | Gwinnett |
| River/Stream | Unknown |
| Coordinates | 34.06083, -83.92167 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 40 ft |
| Dam Height | 40 ft |
| Dam Length | 318 ft |
Storage & Hydraulics
| NID Storage | 53 acre-ft |
| Max Storage | 53 acre-ft |
| Normal Storage | 35 acre-ft |
| Surface Area | 5 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Agio Corporation |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 03/01/1989 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | GA03905 |
| Federal ID | GA03905 |
| More Info | State Dam Safety Program |