Heishmans Mill
Key Takeaway
Heishmans Mill is classified as low hazard in Pennsylvania. It was completed in 1815 and is 211 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 10 ft (taller than 8.3% in PA) |
| Dam Length | 140 ft |
| Dam Type | Concrete |
| Max Storage | 80 acre-ft |
| Normal Storage | 80 acre-ft |
| Surface Area | 20 acres |
| Drainage Area | 310 sq mi |
| Year Completed | 1815 (211 years old) |
| NID ID | PA01730 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
WILLIAM FOSHAG
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Heishmans Mill?
Heishmans Mill is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Heishmans Mill?
Heishmans Mill is owned by WILLIAM FOSHAG (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Heishmans Mill built?
Heishmans Mill was completed in 1815, making it 211 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 Heishmans Mill?
Heishmans Mill serves the following purposes: Hydroelectric, Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Heishmans Mill?
Heishmans Mill has a dam height of 10 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 Heishmans Mill last inspected?
Heishmans Mill was last inspected on May 17, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.