Rockwood Pond Dam Reservoir Report

Last Updated: January 2, 2026

Rockwood Pond Dam, located in Fitzwilliam, New Hampshire, is a privately owned earth dam constructed in 1922 for recreational purposes on Rockwood Brook.


°F

°F

mph

Wind

%

Humidity

Summary

The dam stands at 11 feet tall and spans 349 feet in length, with a maximum storage capacity of 521 acre-feet. The dam has a spillway width of 70 feet and a low hazard potential, with a fair condition assessment as of July 2017.

Despite being privately owned, the Rockwood Pond Dam is regulated by the New Hampshire Department of Environmental Services (NHDES DAM BUREAU) and undergoes regular inspections, with the last one conducted in July 2017. The dam has a moderate risk assessment level, indicating a need for ongoing risk management measures to ensure public safety. With its scenic location and contribution to the local recreation scene, Rockwood Pond Dam is an important water resource in Cheshire County, New Hampshire, for both residents and visitors to enjoy.

Year Completed

1922

Dam Length

349

Dam Height

11

River Or Stream

ROCKWOOD BROOK

Primary Dam Type

Earth

Surface Area

92.4

Drainage Area

1.4

Nid Storage

521

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

11
       
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.