Grahamville Reservoir
Key Takeaway
Grahamville Reservoir is classified as high hazard in Pennsylvania. It was completed in 1906 and is 120 years old. Its primary use is water supply. 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 | 29 ft (taller than 63.4% in PA) |
| Dam Length | 400 ft |
| Dam Type | Earth |
| Max Storage | 200 acre-ft |
| Normal Storage | 140 acre-ft |
| Surface Area | 18 acres |
| Drainage Area | 2 sq mi |
| Year Completed | 1906 (120 years old) |
| NID ID | PA00020 |
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
BOROUGH OF NORTH EAST
Local Government
Nearby Dams
Smith Reservoir
Erie, PA
High Hazard 34 ftEaton Reservoir
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High Hazard 22 ftFindley Lake Dam
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Low Hazard 10 ftRipley Reservoir Dam
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Significant Hazard 46 ftHoag Pond Dam
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Low Hazard 21 ftWilliams
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Significant Hazard 10 ftSiegel Marsh
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Significant Hazard 12 ftFrequently Asked Questions
What is the hazard classification of Grahamville Reservoir?
Grahamville Reservoir 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 Grahamville Reservoir?
Grahamville Reservoir is owned by BOROUGH OF NORTH EAST (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Grahamville Reservoir built?
Grahamville Reservoir was completed in 1906, making it 120 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 Grahamville Reservoir?
Grahamville Reservoir serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Grahamville Reservoir?
Grahamville Reservoir has a dam height of 29 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 Grahamville Reservoir last inspected?
Grahamville Reservoir was last inspected on October 12, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.