Nockamixon
Key Takeaway
Nockamixon is classified as high hazard in Pennsylvania. It was completed in 1973 and is 53 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 | 112 ft (taller than 96.7% in PA) |
| Dam Length | 1,511 ft |
| Dam Type | Rockfill |
| Max Storage | 71.0K acre-ft |
| Normal Storage | 40.0K acre-ft |
| Surface Area | 1,450 acres |
| Drainage Area | 73 sq mi |
| Year Completed | 1973 (53 years old) |
| NID ID | PA00734 |
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
DCNR
State Government
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What is the hazard classification of Nockamixon?
Nockamixon 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 Nockamixon?
Nockamixon is owned by DCNR (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Nockamixon built?
Nockamixon was completed in 1973, making it 53 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 Nockamixon?
Nockamixon 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 Nockamixon?
Nockamixon has a dam height of 112 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 Nockamixon last inspected?
Nockamixon was last inspected on July 29, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.