Exeter Sewage Holding Pond Dam Reservoir Report
Last Updated: December 15, 2025
The Exeter Sewage Holding Pond Dam in New Hampshire serves a crucial purpose for the local government as a key infrastructure for sewage management.
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Summary
Completed in 1989, this Earth-type dam stands at a height of 10 feet and spans 1440 feet in length, with a storage capacity of 21 acre-feet. Despite its significant hazard potential, the dam has been assessed as satisfactory, with inspections conducted regularly to ensure its structural integrity and safe operation.
Located in Rockingham County, the Exeter Sewage Holding Pond Dam is regulated by the NHDES Dam Bureau and falls under state jurisdiction for permitting, inspection, and enforcement. It is a vital component of the sewage management system in Exeter, providing essential protection against potential flooding and ensuring the safety of surrounding areas. With a risk assessment rating of High (2), risk management measures are crucial in maintaining the dam's functionality and safeguarding the community against any potential emergencies or disasters.
For water resource and climate enthusiasts, the Exeter Sewage Holding Pond Dam serves as a noteworthy example of infrastructure that plays a crucial role in both environmental protection and public health. As climate change continues to impact water resources and infrastructure, the maintenance and management of dams like this one become increasingly important. With its significant hazard potential and high risk assessment, ensuring the continued safety and effectiveness of the Exeter Sewage Holding Pond Dam is essential for the community's resilience and preparedness in the face of evolving environmental challenges.
Year Completed |
1989 |
Dam Length |
1440 |
Dam Height |
10 |
River Or Stream |
NA |
Primary Dam Type |
Earth |
Surface Area |
7 |
Nid Storage |
21 |
Hazard Potential |
Significant |
Foundations |
Unlisted/Unknown |
Nid Height |
10 |
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.
Exeter Sewage Holding Pond Dam
Squamscott River boat launch