Llewellyn Lake Dam
Key Takeaway
Llewellyn Lake Dam is classified as high hazard in Indiana. It was completed in 1966 and is 60 years old. Its primary use is water supply. 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 | 13 ft (taller than 6.2% in IN) |
| Dam Length | 490 ft |
| Dam Type | Earth |
| Max Storage | 123 acre-ft |
| Normal Storage | 70 acre-ft |
| Surface Area | 14 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 597 cfs |
| Year Completed | 1966 (60 years old) |
| NID ID | IN00506 |
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
RALPH E. LLEWELLYN
Private
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What is the hazard classification of Llewellyn Lake Dam?
Llewellyn 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 Llewellyn Lake Dam?
Llewellyn Lake Dam is owned by RALPH E. LLEWELLYN (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Llewellyn Lake Dam built?
Llewellyn Lake Dam was completed in 1966, making it 60 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 Llewellyn Lake Dam?
Llewellyn Lake Dam serves the following purposes: Water Supply, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Llewellyn Lake Dam?
Llewellyn Lake Dam has a dam height of 13 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 Llewellyn Lake Dam last inspected?
Llewellyn Lake Dam was last inspected on July 14, 1992. Inspection dates indicate when a formal review occurred, not the results of that inspection.