Knight Meadow Pond Dam Reservoir Report

Last Updated: December 19, 2025

Knight Meadow Pond Dam in Webster, New Hampshire, is a state-regulated structure with a primary purpose of recreation.


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Summary

Built in 1966, this earth dam stands at a height of 9 feet and has a length of 90 feet, creating a reservoir with a storage capacity of 483 acre-feet. The dam is situated on Knight Meadow Brook, within the Merrimack County of New Hampshire, and is owned by the state.

Despite being classified as having a low hazard potential, the dam's condition is assessed as fair, with the last inspection in June 2017. The structure boasts a moderate risk assessment rating, indicating the need for careful monitoring and risk management measures. With a drainage area of 3.7 square miles and a maximum discharge rate of 748 cubic feet per second, Knight Meadow Pond Dam plays a crucial role in water resource management and flood control in the region.

Enthusiasts of water resources and climate will find Knight Meadow Pond Dam an intriguing example of a recreational dam with both recreational and practical functions. Its design and construction reflect the engineering efforts to balance water storage needs with environmental considerations, making it a vital component of the local landscape and ecosystem. As climate change continues to impact water resources, structures like Knight Meadow Pond Dam will play a crucial role in adapting to and mitigating the effects of changing weather patterns on the region's water supply and flood control efforts.

Year Completed

1966

Dam Length

90

Dam Height

9

River Or Stream

KNIGHT MEADOW BROOK

Primary Dam Type

Earth

Surface Area

50

Drainage Area

3.7

Nid Storage

483

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

9
       
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.