Hollybrook Lake Dam
Key Takeaway
Hollybrook Lake Dam is classified as high hazard in Indiana. It was completed in 1940 and is 86 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 | 18 ft (taller than 15.7% in IN) |
| Dam Length | 329 ft |
| Dam Type | Earth |
| Max Storage | 306 acre-ft |
| Normal Storage | 113 acre-ft |
| Surface Area | 29 acres |
| Drainage Area | 10 sq mi |
| Max Discharge | 14,000 cfs |
| Year Completed | 1940 (86 years old) |
| NID ID | IN00384 |
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
LAKE HOLLYBROOK INC.
Private
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Significant Hazard 20 ftFrequently Asked Questions
What is the hazard classification of Hollybrook Lake Dam?
Hollybrook 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 Hollybrook Lake Dam?
Hollybrook Lake Dam is owned by LAKE HOLLYBROOK INC. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hollybrook Lake Dam built?
Hollybrook Lake Dam was completed in 1940, making it 86 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 Hollybrook Lake Dam?
Hollybrook 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 Hollybrook Lake Dam?
Hollybrook Lake Dam has a dam height of 18 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 Hollybrook Lake Dam last inspected?
Hollybrook Lake Dam was last inspected on July 16, 2015. Inspection dates indicate when a formal review occurred, not the results of that inspection.