Conway Treatment Lagoon Dam is an earth dam located in Carroll County, New Hampshire, built in 1985. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 7 ft7 ft tall and 1,094 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 Conway Treatment Lagoon Dam
Conway Treatment Lagoon Dam is a dam in Carroll, New Hampshire. The dam is owned by Conway Village Fire District (local government). It impounds the Na near Conway.
The dam stands 7 feet tall and stretches 1,094 feet across, creates a reservoir covering 0 acres, and has a maximum storage capacity of 9 acre-feet. Completed in 1985, the structure is 41 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 09/22/2021.
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Location
| State | New Hampshire |
| County | Carroll |
| Nearest City | Conway |
| River/Stream | Na |
| Coordinates | 43.97690, -71.10630 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 7 ft |
| Dam Height | 7 ft |
| Dam Length | 1,094 ft |
| Year Completed | 1985 (41 years old) |
Storage & Hydraulics
| NID Storage | 9 acre-ft |
| Max Storage | 9 acre-ft |
| Normal Storage | 7 acre-ft |
| Surface Area | 0 acres |
Ownership & Safety
| Purpose | Other |
| Owner | Conway Village Fire District |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/22/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NH01038 |
| Federal ID | NH01038 |
| More Info | State Dam Safety Program |