Pine Island Pond Dam
Key Takeaway
Pine Island Pond Dam is classified as low hazard in New Hampshire. It was completed in 1896 and is 130 years old. Its primary use is recreation.
Physical Details
| Dam Height | 19 ft (taller than 68% in NH) |
| Dam Length | 150 ft |
| Dam Type | Earth |
| Max Storage | 611 acre-ft |
| Normal Storage | 164 acre-ft |
| Surface Area | 35 acres |
| Drainage Area | 70 sq mi |
| Max Discharge | 5,350 cfs |
| Year Completed | 1896 (130 years old) |
| Year Modified | 1936 |
| NID ID | NH00292 |
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 MANCHESTER
Local Government
Nearby Dams
Manchester Airport Det Pond Dam
Rockingham, NH
Low Hazard 27 ftWoodbury Estate Pond Dam
Hillsborough, NH
Significant Hazard 16 ftLittle Cohas Brook Dam
Rockingham, NH
Low Hazard 10 ftCohas Avenue Dam
Hillsborough, NH
Low Hazard 20 ftMassabesic Lake Dam
Hillsborough, NH
High Hazard 30 ftAmoskeag
Hillsborough, NH
High Hazard 29 ftKelley'S Falls Dam
Hillsborough, NH
High Hazard 31 ftDorrs Pond Dam
Hillsborough, NH
High Hazard 9 ftFrequently Asked Questions
What is the hazard classification of Pine Island Pond Dam?
Pine Island Pond 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 Pine Island Pond Dam?
Pine Island Pond Dam is owned by CITY OF MANCHESTER (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Pine Island Pond Dam built?
Pine Island Pond Dam was completed in 1896, making it 130 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 Pine Island Pond Dam?
Pine Island Pond Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Pine Island Pond Dam?
Pine Island Pond Dam has a dam height of 19 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 Pine Island Pond Dam last inspected?
Pine Island Pond Dam was last inspected on May 22, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.