Holly
Key Takeaway
Holly is classified as low hazard in Pennsylvania. It was completed in 1988 and is 38 years old. Its primary use is recreation.
Physical Details
| Dam Height | 25 ft (taller than 55% in PA) |
| Dam Length | 510 ft |
| Dam Type | Earth |
| Max Storage | 185 acre-ft |
| Normal Storage | 163 acre-ft |
| Surface Area | 17 acres |
| Drainage Area | 0 sq mi |
| Year Completed | 1988 (38 years old) |
| NID ID | PA01581 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
LYNN BUTLER
Private
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High Hazard 12 ftFrequently Asked Questions
What is the hazard classification of Holly?
Holly is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Holly?
Holly is owned by LYNN BUTLER (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Holly built?
Holly was completed in 1988, making it 38 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 Holly?
Holly 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 Holly?
Holly has a dam height of 25 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 Holly last inspected?
Holly was last inspected on June 13, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.