Upper
Key Takeaway
Upper is classified as low hazard in Pennsylvania. It was completed in 1919 and is 107 years old. Its primary use is recreation.
Physical Details
| Dam Height | 22 ft (taller than 48.9% in PA) |
| Dam Length | 134 ft |
| Dam Type | Stone |
| Max Storage | 99 acre-ft |
| Normal Storage | 77 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 7 sq mi |
| Year Completed | 1919 (107 years old) |
| NID ID | PA00483 |
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
PA GAME COMMISSION
State Government
Nearby Dams
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Low Hazard 14 ftLittle Buffalo Creek
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High Hazard 52 ftCarlisle Raw Water Intake
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Low Hazard 9 ftFrequently Asked Questions
What is the hazard classification of Upper?
Upper 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 Upper?
Upper is owned by PA GAME COMMISSION (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Upper built?
Upper was completed in 1919, making it 107 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 Upper?
Upper 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 Upper?
Upper has a dam height of 22 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 Upper last inspected?
Upper was last inspected on May 13, 2015. Inspection dates indicate when a formal review occurred, not the results of that inspection.