Griffis
Key Takeaway
Griffis is classified as significant hazard in Pennsylvania. It was completed in 1989 and is 37 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 17 ft (taller than 35.6% in PA) |
| Dam Length | 300 ft |
| Dam Type | Earth |
| Max Storage | 110 acre-ft |
| Normal Storage | 14 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 1 sq mi |
| Year Completed | 1989 (37 years old) |
| NID ID | PA01420 |
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
ANITA GRIFFIS
Private
Nearby Dams
Forest Lake
Susquehanna, PA
Significant Hazard 12 ftChalker
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High Hazard 21 ftLake Timberline
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Low Hazard 14 ftLee Smith Dam
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High Hazard 21 ftDuffield Pond
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Significant Hazard 25 ftCranberry Lake
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Low Hazard 8 ftLongford Lake
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High Hazard 37 ftFrequently Asked Questions
What is the hazard classification of Griffis?
Griffis 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 Griffis?
Griffis is owned by ANITA GRIFFIS (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Griffis built?
Griffis was completed in 1989, making it 37 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 Griffis?
Griffis 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 Griffis?
Griffis has a dam height of 17 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 Griffis last inspected?
Griffis was last inspected on August 25, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.