Black Rock Mountain State Park Lake Dam
Key Takeaway
Black Rock Mountain State Park Lake Dam is classified as high hazard in Georgia. It was completed in 1974 and is 52 years old. Its primary use is recreation. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 72 ft (taller than 98.6% in GA) |
| Dam Length | 400 ft |
| Dam Type | Earth |
| Max Storage | 921 acre-ft |
| Normal Storage | 386 acre-ft |
| Surface Area | 16 acres |
| Drainage Area | 889 sq mi |
| Year Completed | 1974 (52 years old) |
| NID ID | GA02070 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Parks & Historic Sites Division
State Government
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What is the hazard classification of Black Rock Mountain State Park Lake Dam?
Black Rock Mountain State Park Lake Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Black Rock Mountain State Park Lake Dam?
Black Rock Mountain State Park Lake Dam is owned by Parks & Historic Sites Division (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Black Rock Mountain State Park Lake Dam built?
Black Rock Mountain State Park Lake Dam was completed in 1974, making it 52 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Black Rock Mountain State Park Lake Dam?
Black Rock Mountain State Park Lake Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Black Rock Mountain State Park Lake Dam?
Black Rock Mountain State Park Lake Dam has a dam height of 72 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was Black Rock Mountain State Park Lake Dam last inspected?
Black Rock Mountain State Park Lake Dam was last inspected on February 2, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.