Mountain Shadow Lake
Key Takeaway
Mountain Shadow Lake is classified as high hazard in Pennsylvania. It was completed in 1954 and is 72 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 | 20 ft (taller than 43.1% in PA) |
| Dam Length | 550 ft |
| Dam Type | Earth |
| Max Storage | 417 acre-ft |
| Normal Storage | 128 acre-ft |
| Surface Area | 35 acres |
| Drainage Area | 3 sq mi |
| Year Completed | 1954 (72 years old) |
| NID ID | PA00244 |
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
YELLER DOG LTD
Private
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Low Hazard 39 ftFrequently Asked Questions
What is the hazard classification of Mountain Shadow Lake?
Mountain Shadow Lake 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 Mountain Shadow Lake?
Mountain Shadow Lake is owned by YELLER DOG LTD (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mountain Shadow Lake built?
Mountain Shadow Lake was completed in 1954, making it 72 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 Mountain Shadow Lake?
Mountain Shadow Lake 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 Mountain Shadow Lake?
Mountain Shadow Lake has a dam height of 20 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 Mountain Shadow Lake last inspected?
Mountain Shadow Lake was last inspected on June 19, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.