Olyphant No 3
Key Takeaway
Olyphant No 3 is classified as significant hazard in Pennsylvania. It was completed in 1898 and is 128 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 38 ft (taller than 75.2% in PA) |
| Dam Length | 760 ft |
| Dam Type | Earth |
| Max Storage | 157 acre-ft |
| Normal Storage | 115 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 1 sq mi |
| Year Completed | 1898 (128 years old) |
| NID ID | PA00381 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
DCNR
State Government
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High Hazard 14 ftDunmore No 3
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Significant Hazard 12 ftFrequently Asked Questions
What is the hazard classification of Olyphant No 3?
Olyphant No 3 is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Olyphant No 3?
Olyphant No 3 is owned by DCNR (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Olyphant No 3 built?
Olyphant No 3 was completed in 1898, making it 128 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 Olyphant No 3?
Olyphant No 3 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 Olyphant No 3?
Olyphant No 3 has a dam height of 38 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 Olyphant No 3 last inspected?
Olyphant No 3 was last inspected on September 14, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.