Ballard Pond Upper Dam
Key Takeaway
Ballard Pond Upper Dam is classified as low hazard in New Hampshire. It was completed in 1935 and is 91 years old. Its primary use is recreation.
Physical Details
| Dam Height | 7 ft (taller than 1.4% in NH) |
| Dam Length | 120 ft |
| Dam Type | Earth |
| Max Storage | 415 acre-ft |
| Normal Storage | 127 acre-ft |
| Surface Area | 93 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 514 cfs |
| Year Completed | 1935 (91 years old) |
| Year Modified | 1941 |
| NID ID | NH00184 |
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
NH DNCR
State Government
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Low Hazard 15 ftFrequently Asked Questions
What is the hazard classification of Ballard Pond Upper Dam?
Ballard Pond Upper 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 Ballard Pond Upper Dam?
Ballard Pond Upper Dam is owned by NH DNCR (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Ballard Pond Upper Dam built?
Ballard Pond Upper Dam was completed in 1935, making it 91 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 Ballard Pond Upper Dam?
Ballard Pond Upper 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 Ballard Pond Upper Dam?
Ballard Pond Upper Dam has a dam height of 7 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 Ballard Pond Upper Dam last inspected?
Ballard Pond Upper Dam was last inspected on June 18, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.