Municipal Sewage Lagoon 1 Dam Reservoir Report
Last Updated: December 14, 2025
Municipal Sewage Lagoon 1 Dam, located in Newport, New Hampshire, is a crucial infrastructure managed by the local government for wastewater management.
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Summary
This earth dam, completed in 1968, stands at a height of 11 feet and has a length of 1675 feet, with a storage capacity of 44 acre-feet. The dam is primarily used for purposes related to wastewater treatment, making it an essential component of the local water resource management system.
Despite its importance, Municipal Sewage Lagoon 1 Dam has been rated with a significant hazard potential and a fair condition assessment. The dam is regulated by the NHDES Dam Bureau and undergoes regular inspections to ensure its structural integrity and operational efficiency. The risk assessment for the dam has been classified as high, highlighting the need for effective risk management measures to mitigate any potential hazards associated with the structure.
With a significant role in wastewater treatment and water resource management, Municipal Sewage Lagoon 1 Dam serves as a critical infrastructure in safeguarding public health and the environment. As climate change continues to impact water resources, ensuring the safety and reliability of dams like this one becomes increasingly important. Ongoing monitoring, maintenance, and risk management efforts are essential to protect the community and the surrounding ecosystem from potential risks associated with the dam.
Year Completed |
1968 |
Dam Length |
1675 |
Dam Height |
11 |
River Or Stream |
NA |
Primary Dam Type |
Earth |
Surface Area |
4 |
Nid Storage |
44 |
Hazard Potential |
Significant |
Foundations |
Unlisted/Unknown |
Nid Height |
11 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Municipal Sewage Lagoon 1 Dam
Perkins Pond boat launch