Riverdale Mills
Key Takeaway
Riverdale Mills is classified as low hazard in Massachusetts. It was completed in 1957 and is 69 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 10 ft (taller than 18% in MA) |
| Dam Length | 142 ft |
| Dam Type | Concrete |
| Max Storage | 89 acre-ft |
| Normal Storage | 89 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 142 sq mi |
| Max Discharge | 19,400 cfs |
| Year Completed | 1957 (69 years old) |
| NID ID | MA00942 |
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
James M. Knott
Private
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Significant Hazard 16 ftFrequently Asked Questions
What is the hazard classification of Riverdale Mills?
Riverdale 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 Riverdale Mills?
Riverdale Mills is owned by James M. Knott (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Riverdale Mills built?
Riverdale Mills was completed in 1957, making it 69 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 Riverdale Mills?
Riverdale Mills serves the following purposes: Hydroelectric, Water Supply, Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Riverdale Mills?
Riverdale Mills 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 Riverdale Mills last inspected?
Riverdale Mills was last inspected on August 2, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.