Mill Dam
Key Takeaway
Mill Dam is classified as low hazard in New York. It was completed in 1916 and is 110 years old. Its primary use is other.
Physical Details
| Dam Height | 12 ft (taller than 23.2% in NY) |
| Dam Length | 396 ft |
| Dam Type | Concrete |
| Max Storage | 291 acre-ft |
| Normal Storage | 140 acre-ft |
| Surface Area | 40 acres |
| Drainage Area | 587 sq mi |
| Max Discharge | 7,200 cfs |
| Year Completed | 1916 (110 years old) |
| NID ID | NY00819 |
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
TOWN OF MADRID
Local Government
Nearby Dams
Norwood
St. Lawrence, NY
High Hazard 24 ftHewittville
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Low Hazard 18 ftYaleville
St. Lawrence, NY
Low Hazard 12 ftUnionville
St. Lawrence, NY
Low Hazard 20 ftSissonville
St. Lawrence, NY
Low Hazard 16 ftNorfolk Dam
St. Lawrence, NY
High Hazard 29 ftEast Norfolk
St. Lawrence, NY
High Hazard 16 ftPotsdam - West Dam
St. Lawrence, NY
Low Hazard 11 ftFrequently Asked Questions
What is the hazard classification of Mill Dam?
Mill Dam 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 Mill Dam?
Mill Dam is owned by TOWN OF MADRID (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mill Dam built?
Mill Dam was completed in 1916, making it 110 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 Mill Dam?
Mill Dam serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Mill Dam?
Mill Dam has a dam height of 12 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 Mill Dam last inspected?
Mill Dam was last inspected on July 17, 2009. Inspection dates indicate when a formal review occurred, not the results of that inspection.