Dinsmore No 2
Key Takeaway
Dinsmore No 2 is classified as high hazard in Pennsylvania. It was completed in 1909 and is 117 years old. Its primary use is recreation. 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 | 27 ft (taller than 60.1% in PA) |
| Dam Length | 410 ft |
| Dam Type | Earth |
| Max Storage | 133 acre-ft |
| Normal Storage | 79 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 4 sq mi |
| Year Completed | 1909 (117 years old) |
| NID ID | PA00497 |
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
GOODWILL HILL HUNTING AND FISHING CLUB
Private
Nearby Dams
Pa-481
Washington, PA
High Hazard 51 ftPa-482
Washington, PA
High Hazard 38 ftPa-480
Washington, PA
High Hazard 66 ftPa-483
Washington, PA
High Hazard 74 ftPa-479
Washington, PA
High Hazard 63 ftHarmon Creek (Pa-484)
Washington, PA
High Hazard 67 ftStarpointe
Washington, PA
Low Hazard 25 ftPa-485
Washington, PA
High Hazard 78 ftFrequently Asked Questions
What is the hazard classification of Dinsmore No 2?
Dinsmore No 2 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 Dinsmore No 2?
Dinsmore No 2 is owned by GOODWILL HILL HUNTING AND FISHING CLUB (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Dinsmore No 2 built?
Dinsmore No 2 was completed in 1909, making it 117 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 Dinsmore No 2?
Dinsmore No 2 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 Dinsmore No 2?
Dinsmore No 2 has a dam height of 27 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 Dinsmore No 2 last inspected?
Dinsmore No 2 was last inspected on March 23, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.