Emerald Lake
Key Takeaway
Emerald Lake is classified as significant hazard in Pennsylvania. It was completed in 1912 and is 114 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 38 ft (taller than 75.2% in PA) |
| Dam Length | 130 ft |
| Dam Type | Earth |
| Max Storage | 390 acre-ft |
| Normal Storage | 276 acre-ft |
| Surface Area | 18 acres |
| Drainage Area | 5 sq mi |
| Year Completed | 1912 (114 years old) |
| NID ID | PA00499 |
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
EMERALD LAKE HOMEOWNERS ASSOCIATION, INC
Private
Nearby Dams
Marshall Reservoir No. 2
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Significant Hazard 37 ftNorth Slurry Pond
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Low Hazard 100 ftDuck Pond
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Low Hazard 60 ftStarpointe
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Low Hazard 25 ftCherry Valley
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High Hazard 33 ftRaccoon Creek
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High Hazard 45 ftPa-481
Washington, PA
High Hazard 51 ftFrequently Asked Questions
What is the hazard classification of Emerald Lake?
Emerald Lake 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 Emerald Lake?
Emerald Lake is owned by EMERALD LAKE HOMEOWNERS ASSOCIATION, INC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Emerald Lake built?
Emerald Lake was completed in 1912, making it 114 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 Emerald Lake?
Emerald 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 Emerald Lake?
Emerald Lake has a dam height of 38 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 Emerald Lake last inspected?
Emerald Lake was last inspected on December 12, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.