Waterville Valley Lagoons Dam

NA· Grafton, New Hampshire· Built 1972· Earth· 19 ft tall
Significant Hazard Other Local Government

Key Takeaway

Waterville Valley Lagoons Dam is classified as significant hazard in New Hampshire. It was completed in 1972 and is 54 years old. Its primary use is other. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 19 ft (taller than 68% in NH)
Dam Length1,200 ft
Dam TypeEarth
Max Storage36 acre-ft
Normal Storage26 acre-ft
Surface Area3 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1972 (54 years old)
NID IDNH03556

Safety Information

Significant Hazard

No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: No
Last Inspection: June 16, 2021
State Regulated: Yes
Regulatory Agency: NH DES

Ownership

TOWN OF WATERVILLE VALLEY

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Waterville Valley Lagoons Dam?

Waterville Valley Lagoons Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Waterville Valley Lagoons Dam?

Waterville Valley Lagoons Dam is owned by TOWN OF WATERVILLE VALLEY (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Waterville Valley Lagoons Dam built?

Waterville Valley Lagoons Dam was completed in 1972, making it 54 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 Waterville Valley Lagoons Dam?

Waterville Valley Lagoons Dam serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Waterville Valley Lagoons Dam?

Waterville Valley Lagoons 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 Waterville Valley Lagoons Dam last inspected?

Waterville Valley Lagoons Dam was last inspected on June 16, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.