Hall Mountain Marsh Dam
Key Takeaway
Hall Mountain Marsh Dam is classified as low hazard in New Hampshire. It was completed in 1945 and is 81 years old. Its primary use is recreation.
Physical Details
| Dam Height | 13 ft (taller than 36.5% in NH) |
| Dam Length | 40 ft |
| Dam Type | Concrete |
| Max Storage | 136 acre-ft |
| Normal Storage | 71 acre-ft |
| Surface Area | 21 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 553 cfs |
| Year Completed | 1945 (81 years old) |
| Year Modified | 1956 |
| NID ID | NH00514 |
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
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Low Hazard 7 ftHayes Marsh Dam
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Significant Hazard 8 ftCatamount Pond Dam
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Low Hazard 14 ftTower Hill Pond Dam
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High Hazard 35 ftThurston Pond Dam
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Unknown 9 ftClark Pond East Dam
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Low Hazard 8 ftFrequently Asked Questions
What is the hazard classification of Hall Mountain Marsh Dam?
Hall Mountain 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 Hall Mountain Marsh Dam?
Hall Mountain 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 Hall Mountain Marsh Dam built?
Hall Mountain Marsh Dam was completed in 1945, making it 81 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 Hall Mountain Marsh Dam?
Hall Mountain 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 Hall Mountain Marsh Dam?
Hall Mountain Marsh Dam has a dam height of 13 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 Hall Mountain Marsh Dam last inspected?
Hall Mountain Marsh Dam was last inspected on September 27, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.