Whitewater Brook Dam Reservoir Report

Last Updated: December 15, 2025

Whitewater Brook Dam in Claremont, New Hampshire, stands as a vital local government-owned structure designed for water supply purposes.


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Summary

Completed in 1968, this Earth-type dam boasts a height of 95 feet and a length of 425 feet, with a storage capacity of 665 acre-feet. Situated on the White Water Brook, it plays a crucial role in regulating water flow and ensuring a stable water supply for the region.

With a high hazard potential but a satisfactory condition assessment, Whitewater Brook Dam is closely monitored by the New Hampshire Department of Environmental Services Dam Bureau, showcasing a commitment to safety and regulatory compliance. The dam's uncontrolled spillway, with a width of 120 feet, is designed to handle maximum discharges of up to 9695 cubic feet per second, ensuring effective flood control measures. Despite its moderate risk level, the dam's emergency action plan and risk management measures are essential components in safeguarding the surrounding community from potential hazards.

Overall, Whitewater Brook Dam stands as a significant infrastructure asset in Sullivan County, New Hampshire, serving as a critical water resource for the area. Its strategic location, design features, and regulatory oversight highlight its importance in water management and climate resilience efforts, making it a valuable asset for water resource and climate enthusiasts alike.

Year Completed

1968

Dam Length

425

Dam Height

95

River Or Stream

WHITEWATER BROOK

Primary Dam Type

Earth

Surface Area

20

Drainage Area

4.13

Nid Storage

665

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

95
       
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.