Lake Underwood
Key Takeaway
Lake Underwood is classified as significant hazard in Pennsylvania. It was completed in 1890 and is 136 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 9 ft (taller than 5.5% in PA) |
| Dam Length | 110 ft |
| Dam Type | Earth |
| Max Storage | 378 acre-ft |
| Normal Storage | 310 acre-ft |
| Surface Area | 86 acres |
| Drainage Area | 3 sq mi |
| Year Completed | 1890 (136 years old) |
| NID ID | PA00129 |
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
LAKE UNDERWOOD NIMROD CLUB
Private
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Low Hazard 12 ftFrequently Asked Questions
What is the hazard classification of Lake Underwood?
Lake Underwood 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 Lake Underwood?
Lake Underwood is owned by LAKE UNDERWOOD NIMROD CLUB (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake Underwood built?
Lake Underwood was completed in 1890, making it 136 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 Underwood?
Lake Underwood 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 Lake Underwood?
Lake Underwood has a dam height of 9 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 Underwood last inspected?
Lake Underwood was last inspected on November 20, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.