Municipal Primary Sewage Lagoon 1
Municipal Primary Sewage Lagoon 1 is an earth dam located in Sullivan County, New Hampshire, built in 1968. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Municipal Primary Sewage Lagoon 1
Municipal Primary Sewage Lagoon 1 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 11 feet tall and stretches 1,260 feet across, creates a reservoir covering 2 acres, and has a maximum storage capacity of 22 acre-feet. Completed in 1968, the structure is well into its service life at over 50 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 11/09/2021.
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Location
| State | New Hampshire |
| County | Sullivan |
| Nearest City | Newport |
| River/Stream | Na |
| Coordinates | 43.37800, -72.18130 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 1,260 ft |
| Year Completed | 1968 (58 years old) |
Storage & Hydraulics
| NID Storage | 22 acre-ft |
| Max Storage | 22 acre-ft |
| Normal Storage | 15 acre-ft |
| Surface Area | 2 acres |
Ownership & Safety
| Purpose | Other |
| Owner | TOWN OF NEWPORT |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 11/09/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NH00810 |
| Federal ID | NH00810 |
| More Info | State Dam Safety Program |