Brook Hollow Lake Dam is an earth dam located in Gwinnett County, Georgia, built in 1985. It carries a Low hazard potential classification.
Dam profile
NID height · 34 ft34 ft tall and 300 ft long, taller than 78% 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 Brook Hollow Lake Dam
The primary purpose of Brook Hollow 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 Roc III Ga Springs Lake LLC (private). It impounds the Unknown.
The dam stands 34 feet tall and stretches 300 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 63 acre-feet, and collects water from a drainage area of 89 square miles. Completed in 1985, the structure is 41 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 10/05/2016. That was over 10 years ago.
At 34 feet, this dam is taller than 78% of dams nationwide.
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Location
| State | Georgia |
| County | Gwinnett |
| River/Stream | Unknown |
| Coordinates | 33.92083, -84.20264 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Height | 34 ft |
| Dam Length | 300 ft |
| Year Completed | 1985 (41 years old) |
Storage & Hydraulics
| NID Storage | 63 acre-ft |
| Max Storage | 63 acre-ft |
| Normal Storage | 24 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 89 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Roc III Ga Springs Lake LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 10/05/2016 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | GA03897 |
| Federal ID | GA03897 |
| More Info | State Dam Safety Program |