Atkinson Cc Lagoon Dam Reservoir Report

Last Updated: December 17, 2025

Atkinson Cc Lagoon Dam, located in Atkinson, New Hampshire, was completed in 2001 and serves as a private water resource for the area.


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Summary

The dam, primarily made of earth with a buttress core, stands at a height of 14 feet and has a length of 650 feet. With a maximum storage capacity of 15.7 acre-feet and a normal storage of 3.4 acre-feet, the dam plays a crucial role in water management in the region.

Managed by the New Hampshire Department of Environmental Services Dam Bureau, the Atkinson Cc Lagoon Dam is regulated, permitted, inspected, and enforced by the state to ensure its structural integrity and compliance with safety standards. Despite its significant hazard potential, the dam was rated as being in satisfactory condition as of the last assessment in 2015. With a high risk assessment rating of 2, the dam is closely monitored to mitigate any potential risks and ensure the safety of the surrounding communities.

Climate and water resource enthusiasts can appreciate the engineering and management complexities involved in maintaining the Atkinson Cc Lagoon Dam. As a key infrastructure for water storage and management in Rockingham County, New Hampshire, this dam plays a crucial role in safeguarding water resources and mitigating flood risks in the region. With its strategic location and state oversight, this dam stands as a testament to the importance of sustainable water resource management in the face of changing climate conditions.

Year Completed

2001

Dam Length

650

Dam Height

14

River Or Stream

NA

Primary Dam Type

Earth

Surface Area

1.46

Nid Storage

15.7

Hazard Potential

Significant

Foundations

Unlisted/Unknown

Nid Height

14
       
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.