Emerald No. 1 Back Valley Western
Key Takeaway
Emerald No. 1 Back Valley Western is classified as high hazard in Pennsylvania. Its primary use is other. 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 | 90 ft (taller than 94.4% in PA) |
| Dam Length | 750 ft |
| Dam Type | Earth |
| Max Storage | 58 acre-ft |
| Drainage Area | 0 sq mi |
| NID ID | PA01760 |
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
EMERALD CONTURA LLC
Private
Nearby Dams
Emerald No. 2 Back Valley Western
Greene, PA
High Hazard 90 ftEmerald No. 1 Main Valley Eastern
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High Hazard 310 ftEmerald No. 2 Main Valley Eastern
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High Hazard 270 ftEmerald No.2 Sed Pond 1
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High Hazard 18 ftEmerald No. 1 Sed Pond 11
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High Hazard 25 ftWisecarver
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High Hazard 35 ftJewell Pond
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Significant Hazard 15 ftRastoka
Greene, PA
Significant Hazard 18 ftFrequently Asked Questions
What is the hazard classification of Emerald No. 1 Back Valley Western?
Emerald No. 1 Back Valley Western 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 Emerald No. 1 Back Valley Western?
Emerald No. 1 Back Valley Western is owned by EMERALD CONTURA LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
What is the primary purpose of Emerald No. 1 Back Valley Western?
Emerald No. 1 Back Valley Western serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Emerald No. 1 Back Valley Western?
Emerald No. 1 Back Valley Western has a dam height of 90 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 No. 1 Back Valley Western last inspected?
Emerald No. 1 Back Valley Western was last inspected on March 19, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.