Dorr Woolen Sewage Lagoon Dam

Dorr Woolen Sewage Lagoon Dam is an earth dam located in Sullivan County, New Hampshire, built in 1982. It carries a Significant hazard potential classification and has a fair condition assessment.

About Dorr Woolen Sewage Lagoon Dam

Dorr Woolen Sewage Lagoon Dam is a dam in Sullivan, New Hampshire. The dam is owned by Town Of Newport (local government). It impounds the Na near Newport.

The dam stands 20 feet tall and stretches 4,380 feet across, creates a reservoir covering 40 acres, has a maximum storage capacity of 400 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1982, the structure is 44 years old.

This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 11/09/2021.

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Significant HazardFair ConditionEmergency Action Plan: Not Required

Location

StateNew Hampshire
CountySullivan
Nearest CityNewport
River/StreamNa
Coordinates43.37270, -72.14410

Physical Characteristics

Dam TypeEarth
NID Height20 ft
Dam Height20 ft
Dam Length4,380 ft
Year Completed1982 (44 years old)

Storage & Hydraulics

NID Storage400 acre-ft
Max Storage400 acre-ft
Normal Storage280 acre-ft
Surface Area40 acres
Drainage Area0 sq mi

Ownership & Safety

PurposeOther
OwnerTOWN OF NEWPORT
Owner TypeLocal Government
Hazard ClassificationSignificant
Condition AssessmentFair
Last Inspection11/09/2021
Emergency Action PlanNot Required

Identifiers

NID IDNH00621
Federal IDNH00621
More InfoState Dam Safety Program

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