Henderson Lake Dam
Henderson Lake Dam is an earth dam located in Forsyth County, Georgia, built in 1984. It carries a Low hazard potential classification.
About Henderson Lake Dam
The primary purpose of Henderson Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Longlake Homeowners Association (private). It impounds the Unknown near Cumming.
The dam stands 36 feet tall and stretches 700 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 65 acre-feet, and collects water from a drainage area of 180 square miles. Completed in 1984, the structure is 42 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.
At 36 feet, this dam is taller than 83% of dams nationwide.
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Location
| State | Georgia |
| County | Forsyth |
| Nearest City | Cumming |
| River/Stream | Unknown |
| Coordinates | 34.12667, -84.15889 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 36 ft |
| Dam Height | 36 ft |
| Dam Length | 700 ft |
| Year Completed | 1984 (42 years old) |
Storage & Hydraulics
| NID Storage | 65 acre-ft |
| Max Storage | 65 acre-ft |
| Normal Storage | 48 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 180 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Longlake Homeowners Association |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | GA09008 |
| Federal ID | GA09008 |
| More Info | State Dam Safety Program |