Chase Pond Dam Reservoir Report
Nearby: Tannery Pond Dam Pleasant Lake Dam
Last Updated: December 19, 2025
Chase Pond Dam, located in Wilmot, New Hampshire, stands as a significant earth dam completed in 1939 primarily for recreational purposes.
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Summary
With a height of 17 feet and a length of 100 feet, the dam has a storage capacity of 370 acre-feet and a surface area of 39 acres. Situated on the TR Blackwater River, the dam is under the jurisdiction of the NHDES Dam Bureau and is subject to state regulation, inspection, and enforcement.
Despite being classified as having a significant hazard potential, Chase Pond Dam has been assessed as being in satisfactory condition as of September 2014. Regular inspections every four years ensure its continued safety and functionality for the surrounding area. With an uncontrolled spillway type and a spillway width of 51 feet, the dam's risk assessment is moderate, indicating the need for ongoing risk management measures. For water resource and climate enthusiasts, Chase Pond Dam is a focal point not only for recreation but also for monitoring and safeguarding against potential hazards in the region.
Year Completed |
1939 |
Dam Length |
100 |
Dam Height |
17 |
River Or Stream |
TR BLACKWATER RIVER |
Primary Dam Type |
Earth |
Surface Area |
39 |
Drainage Area |
14 |
Nid Storage |
370 |
Hazard Potential |
Significant |
Foundations |
Unlisted/Unknown |
Nid Height |
17 |
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.
Chase Pond Dam
Pleasant Lake boat launch