Dorr Woolen Sewage Lagoon Dam

NA· Sullivan, New Hampshire· Built 1982· Earth· 20 ft tall
Significant Hazard Other Local Government

Key Takeaway

Dorr Woolen Sewage Lagoon Dam is classified as significant hazard in New Hampshire. It was completed in 1982 and is 44 years old. Its primary use is other. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 20 ft (taller than 70.9% in NH)
Dam Length4,380 ft
Dam TypeEarth
Max Storage400 acre-ft
Normal Storage280 acre-ft
Surface Area40 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1982 (44 years old)
NID IDNH00621

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: November 9, 2021
State Regulated: Yes
Regulatory Agency: NH DES

Ownership

TOWN OF NEWPORT

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Dorr Woolen Sewage Lagoon Dam?

Dorr Woolen Sewage Lagoon 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 Dorr Woolen Sewage Lagoon Dam?

Dorr Woolen Sewage Lagoon Dam is owned by TOWN OF NEWPORT (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Dorr Woolen Sewage Lagoon Dam built?

Dorr Woolen Sewage Lagoon Dam was completed in 1982, making it 44 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 Dorr Woolen Sewage Lagoon Dam?

Dorr Woolen Sewage Lagoon 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 Dorr Woolen Sewage Lagoon Dam?

Dorr Woolen Sewage Lagoon Dam has a dam height of 20 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 Dorr Woolen Sewage Lagoon Dam last inspected?

Dorr Woolen Sewage Lagoon Dam was last inspected on November 9, 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.