Blacksville #1 Freshwater Imp
Key Takeaway
Blacksville #1 Freshwater Imp is classified as significant hazard in Pennsylvania. It was completed in 1974 and is 52 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 20 ft (taller than 43.1% in PA) |
| Dam Length | 1,655 ft |
| Dam Type | Earth |
| Max Storage | 338 acre-ft |
| Normal Storage | 109 acre-ft |
| Surface Area | 24 acres |
| Drainage Area | 1 sq mi |
| Year Completed | 1974 (52 years old) |
| NID ID | PA01850 |
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
CNX WATER ASSETS, LLC
Private
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Significant Hazard 12 ftFrequently Asked Questions
What is the hazard classification of Blacksville #1 Freshwater Imp?
Blacksville #1 Freshwater Imp 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 Blacksville #1 Freshwater Imp?
Blacksville #1 Freshwater Imp is owned by CNX WATER ASSETS, LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Blacksville #1 Freshwater Imp built?
Blacksville #1 Freshwater Imp was completed in 1974, making it 52 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 Blacksville #1 Freshwater Imp?
Blacksville #1 Freshwater Imp 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 Blacksville #1 Freshwater Imp?
Blacksville #1 Freshwater Imp 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 Blacksville #1 Freshwater Imp last inspected?
Blacksville #1 Freshwater Imp was last inspected on September 22, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.