Upper Mountain Lake Dam
Key Takeaway
Upper Mountain Lake Dam is classified as low hazard in New Hampshire. It was completed in 1963 and is 63 years old. Its primary use is recreation.
Physical Details
| Dam Height | 31 ft (taller than 87.9% in NH) |
| Dam Length | 660 ft |
| Dam Type | Earth |
| Max Storage | 499 acre-ft |
| Normal Storage | 325 acre-ft |
| Surface Area | 27 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 1,640 cfs |
| Year Completed | 1963 (63 years old) |
| Year Modified | 2011 |
| NID ID | NH00190 |
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
MOUNTAIN LAKES VILLAGE DISTRICT
Local Government
Nearby Dams
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Significant Hazard 12 ftLisbon Wastewater Lagoons Dam
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Significant Hazard 13 ftChandler Pond Dam
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Significant Hazard 14 ftLong Pond Dam
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Significant Hazard 20 ftFrequently Asked Questions
What is the hazard classification of Upper Mountain Lake Dam?
Upper Mountain Lake 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 Upper Mountain Lake Dam?
Upper Mountain Lake Dam is owned by MOUNTAIN LAKES VILLAGE DISTRICT (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Upper Mountain Lake Dam built?
Upper Mountain Lake Dam was completed in 1963, making it 63 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 Upper Mountain Lake Dam?
Upper Mountain Lake 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 Upper Mountain Lake Dam?
Upper Mountain Lake Dam has a dam height of 31 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 Upper Mountain Lake Dam last inspected?
Upper Mountain Lake Dam was last inspected on April 18, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.