Goose Pond Dike Reservoir Report

Last Updated: December 14, 2025

Goose Pond Dike is a historic earth dam located in Keene, New Hampshire, along the picturesque TR Ashuelot River.


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Summary

Built in 1868, this dam serves primarily for recreational purposes, offering a serene environment for water resource and climate enthusiasts to enjoy. With a dam height of 8 feet and a length of 210 feet, Goose Pond Dike provides a storage capacity of 472 acre-feet, with a normal storage level of 344 acre-feet over a surface area of 51 acres.

Managed by the NHDES Dam Bureau, Goose Pond Dike has a low hazard potential and is currently assessed to be in fair condition. The dam has a spillway width of 3 feet and is uncontrolled, helping regulate water flow in the event of heavy precipitation. Regular inspections are conducted, with the last assessment taking place in May 2019, ensuring the safety and integrity of the structure. Despite its moderate risk assessment, Goose Pond Dike continues to be a popular destination for outdoor enthusiasts seeking to appreciate the beauty of New Hampshire's natural landscapes.

Year Completed

1868

Dam Length

210

Dam Height

8

River Or Stream

TR ASHUELOT RIVER

Primary Dam Type

Earth

Surface Area

51

Drainage Area

1.63

Nid Storage

472

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

8
       
Seasonal Comparison

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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.