Mine Falls
Key Takeaway
Mine Falls is classified as low hazard in New Hampshire. It was completed in 1889 and is 137 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 16 ft (taller than 54.9% in NH) |
| Dam Length | 325 ft |
| Dam Type | Masonry |
| Max Storage | 2.0K acre-ft |
| Normal Storage | 2.0K acre-ft |
| Surface Area | 242 acres |
| Drainage Area | 405 sq mi |
| Max Discharge | 8,981 cfs |
| Year Completed | 1889 (137 years old) |
| NID ID | NH00116 |
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
City of Nashua, NH
Local Government
Nearby Dams
Nashua Canal Dam and Dike
Hillsborough, NH
Low Hazard 11 ftSalmon Brook I Dam
Hillsborough, NH
Low Hazard 17 ftJackson Mills
Hillsborough, NH
Significant Hazard 33 ftHarris Pond Dam
Hillsborough, NH
High Hazard 35 ftBowers Dam
Hillsborough, NH
High Hazard 25 ftSupply Pond Dam
Hillsborough, NH
High Hazard 28 ftHolt Pond Dam
Hillsborough, NH
Low Hazard 13 ftSalmon Brook Dam
Hillsborough, NH
Low Hazard 28 ftFrequently Asked Questions
What is the hazard classification of Mine Falls?
Mine Falls 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 Mine Falls?
Mine Falls is owned by City of Nashua, NH (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mine Falls built?
Mine Falls was completed in 1889, making it 137 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 Mine Falls?
Mine Falls serves the following purposes: Hydroelectric, Recreation, Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Mine Falls?
Mine Falls 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 Mine Falls last inspected?
Mine Falls was last inspected on July 18, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.