Hayes Marsh Dam
Key Takeaway
Hayes Marsh Dam is classified as low hazard in New Hampshire. It was completed in 1951 and is 75 years old. Its primary use is recreation.
Physical Details
| Dam Height | 10 ft (taller than 16% in NH) |
| Dam Length | 240 ft |
| Dam Type | Earth |
| Max Storage | 279 acre-ft |
| Normal Storage | 93 acre-ft |
| Surface Area | 29 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 243 cfs |
| Year Completed | 1951 (75 years old) |
| NID ID | NH00516 |
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 FISH AND GAME DEPARTMENT
State Government
Nearby Dams
Bear Hill Pond Dam
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Low Hazard 7 ftCatamount Pond Dam
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Low Hazard 14 ftHall Mountain Marsh Dam
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Low Hazard 13 ftDube Pond Dam
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Significant Hazard 8 ftWebster
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Significant Hazard 22 ftThurston Pond Dam
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Unknown 9 ftPembroke
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Low Hazard 26 ftChina Mill Dam
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High Hazard 29 ftFrequently Asked Questions
What is the hazard classification of Hayes Marsh Dam?
Hayes Marsh 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 Hayes Marsh Dam?
Hayes Marsh Dam is owned by NH FISH AND GAME DEPARTMENT (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hayes Marsh Dam built?
Hayes Marsh Dam was completed in 1951, making it 75 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 Hayes Marsh Dam?
Hayes Marsh 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 Hayes Marsh Dam?
Hayes Marsh Dam 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 Hayes Marsh Dam last inspected?
Hayes Marsh Dam was last inspected on September 27, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.