Pierce Mills
Key Takeaway
Pierce Mills is classified as low hazard in Vermont. It was completed in 1928 and is 98 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 18 ft (taller than 46% in VT) |
| Dam Length | 136 ft |
| Dam Type | Concrete |
| Max Storage | 50 acre-ft |
| Normal Storage | 50 acre-ft |
| Surface Area | 25 acres |
| Drainage Area | 337 sq mi |
| Max Discharge | 6,430 cfs |
| Year Completed | 1928 (98 years old) |
| NID ID | VT00250 |
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
Green Mountain Power Corporation
Public Utility
Nearby Dams
Great Falls
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Low Hazard 32 ftVail
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Significant Hazard 6 ftInstitute Pond
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High Hazard 26 ftArnold Falls
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Low Hazard 21 ftStiles Pond
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High Hazard 14 ftGage - South Dam
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Low Hazard 18 ftChandler Pond
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Significant Hazard 18 ftFrequently Asked Questions
What is the hazard classification of Pierce Mills?
Pierce Mills 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 Pierce Mills?
Pierce Mills is owned by Green Mountain Power Corporation (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Pierce Mills built?
Pierce Mills was completed in 1928, making it 98 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 Pierce Mills?
Pierce Mills serves the following purposes: Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Pierce Mills?
Pierce Mills has a dam height of 18 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 Pierce Mills last inspected?
Pierce Mills was last inspected on June 15, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.