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.
Dam profile
NID height · 20 ft20 ft tall and 4,380 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
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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Location
| State | New Hampshire |
| County | Sullivan |
| Nearest City | Newport |
| River/Stream | Na |
| Coordinates | 43.37270, -72.14410 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 4,380 ft |
| Year Completed | 1982 (44 years old) |
Storage & Hydraulics
| NID Storage | 400 acre-ft |
| Max Storage | 400 acre-ft |
| Normal Storage | 280 acre-ft |
| Surface Area | 40 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Other |
| Owner | Town of Newport |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 11/09/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NH00621 |
| Federal ID | NH00621 |
| More Info | State Dam Safety Program |