Epping Wastewater Lagoons Reservoir Report

Last Updated: December 14, 2025

The Epping Wastewater Lagoons in Epping, New Hampshire, serve as a vital resource for the local community as a means of managing wastewater.


°F

°F

mph

Wind

%

Humidity

Summary

Owned by the local government and regulated by the NHDES Dam Bureau, these lagoons have a significant storage capacity of 58.5 acre-feet and were completed in 1970. The lagoons cover an area of 8.1 acres and have a dam height of 9 feet, with a primary purpose categorized as "Other."

Despite being classified as having a "Significant" hazard potential, the condition assessment of the Epping Wastewater Lagoons is deemed "Fair," with the last inspection conducted in June 2017. The lagoons have a high risk level of 2, indicating the need for stringent risk management measures. The absence of a spillway and the lack of locks or outlet gates highlight the importance of regular maintenance and monitoring to ensure the safety and efficiency of these crucial wastewater management facilities in Rockingham County, New Hampshire.

For water resource and climate enthusiasts, the Epping Wastewater Lagoons represent a key infrastructure for wastewater management in the region. With a focus on maintaining water quality and environmental sustainability, the lagoons play a crucial role in meeting the community's needs. As the regulatory agency enforces state permitting, inspection, and enforcement, it is essential for stakeholders to remain vigilant in managing risks and implementing necessary measures to protect this essential water resource in Epping.

Year Completed

1970

Dam Length

1955

Dam Height

9

River Or Stream

NA

Primary Dam Type

Earth

Surface Area

8.1

Nid Storage

58.5

Hazard Potential

Significant

Foundations

Unlisted/Unknown

Nid Height

9
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.