Groveton Paper Mill Lagoons Dam is an earth dam located in Coos County, New Hampshire, built in 2010. It carries a Significant hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 25 ft25 ft tall and 2,550 ft long, taller than 50% of U.S. dams with a recorded height. 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 Groveton Paper Mill Lagoons Dam
Groveton Paper Mill Lagoons Dam is a dam in Coos, New Hampshire. The dam is owned by Chapman Groveton Realty (private). It impounds the Na near Northumberland.
The dam stands 25 feet tall and stretches 2,550 feet across, creates a reservoir covering 7 acres, and has a maximum storage capacity of 25 acre-feet. Completed in 2010, the structure is relatively new.
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 10/27/2021.
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Location
| State | New Hampshire |
| County | Coos |
| Nearest City | Northumberland |
| River/Stream | Na |
| Coordinates | 44.59190, -71.52053 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 2,550 ft |
| Year Completed | 2010 (16 years old) |
Storage & Hydraulics
| NID Storage | 25 acre-ft |
| Max Storage | 25 acre-ft |
| Normal Storage | 10 acre-ft |
| Surface Area | 7 acres |
Ownership & Safety
| Purpose | Other |
| Owner | Chapman Groveton Realty |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 10/27/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NH03796 |
| Federal ID | NH03796 |
| More Info | State Dam Safety Program |