Loch Alsh Reservoir
Key Takeaway
Loch Alsh Reservoir is classified as high hazard in Pennsylvania. It was completed in 1915 and is 111 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 | 16 ft (taller than 32.5% in PA) |
| Dam Length | 513 ft |
| Dam Type | Earth |
| Max Storage | 41 acre-ft |
| Normal Storage | 36 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 0 sq mi |
| Year Completed | 1915 (111 years old) |
| NID ID | PA00935 |
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 AMBLER
Local Government
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High Hazard 45 ftFrequently Asked Questions
What is the hazard classification of Loch Alsh Reservoir?
Loch Alsh 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 Loch Alsh Reservoir?
Loch Alsh Reservoir is owned by BOROUGH OF AMBLER (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Loch Alsh Reservoir built?
Loch Alsh Reservoir was completed in 1915, making it 111 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 Loch Alsh Reservoir?
Loch Alsh Reservoir 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 Loch Alsh Reservoir?
Loch Alsh Reservoir has a dam height of 16 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 Loch Alsh Reservoir last inspected?
Loch Alsh Reservoir was last inspected on November 18, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.