Lake Nessmuk (Pa-601)
Key Takeaway
Lake Nessmuk (Pa-601) is classified as high hazard in Pennsylvania. It was completed in 1968 and is 58 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 | 52 ft (taller than 85.5% in PA) |
| Dam Length | 870 ft |
| Dam Type | Earth |
| Max Storage | 1.5K acre-ft |
| Normal Storage | 572 acre-ft |
| Surface Area | 60 acres |
| Drainage Area | 2 sq mi |
| Year Completed | 1968 (58 years old) |
| NID ID | PA00032 |
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
PA FISH & BOAT COMMISSION
State Government
Nearby Dams
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Low Hazard 33 ftFrequently Asked Questions
What is the hazard classification of Lake Nessmuk (Pa-601)?
Lake Nessmuk (Pa-601) 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 Lake Nessmuk (Pa-601)?
Lake Nessmuk (Pa-601) is owned by PA FISH & BOAT COMMISSION (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake Nessmuk (Pa-601) built?
Lake Nessmuk (Pa-601) was completed in 1968, making it 58 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 Lake Nessmuk (Pa-601)?
Lake Nessmuk (Pa-601) serves the following purposes: Recreation, Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Lake Nessmuk (Pa-601)?
Lake Nessmuk (Pa-601) has a dam height of 52 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 Lake Nessmuk (Pa-601) last inspected?
Lake Nessmuk (Pa-601) was last inspected on April 16, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.