Big Spring
Key Takeaway
Big Spring is classified as high hazard in Pennsylvania. It was completed in 1907 and is 119 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 | 43 ft (taller than 79.6% in PA) |
| Dam Length | 1,000 ft |
| Dam Type | Earth |
| Max Storage | 161 acre-ft |
| Normal Storage | 129 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 1 sq mi |
| Year Completed | 1907 (119 years old) |
| NID ID | PA00461 |
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
HIGHRIDGE WATER AUTHORITY
Local Government
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High Hazard 61 ftFrequently Asked Questions
What is the hazard classification of Big Spring?
Big Spring 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 Big Spring?
Big Spring is owned by HIGHRIDGE WATER AUTHORITY (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Big Spring built?
Big Spring was completed in 1907, making it 119 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 Big Spring?
Big Spring 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 Big Spring?
Big Spring has a dam height of 43 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 Big Spring last inspected?
Big Spring was last inspected on October 7, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.