Weston Mill Pond Dam Reservoir Report

Last Updated: December 8, 2025

Weston Mill Pond Dam, located in New Brunswick, New Jersey, serves as a vital water supply source in Middlesex County.


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Summary

Built in 1916, this masonry dam stands at a height of 15.5 feet and spans 309 feet in length, with a storage capacity of 1,060 acre-feet. The dam regulates the flow of Lawrence Brook, ensuring a reliable water source for the surrounding area.

Managed by the local government and regulated by the New Jersey Department of Environmental Protection, Weston Mill Pond Dam has been assessed as having a fair condition with significant hazard potential. Regular inspections are conducted to ensure the dam's structural integrity and safety. In case of emergencies, an Emergency Action Plan is in place to guide response efforts and protect downstream communities.

With a maximum discharge capacity of 1,645 cubic feet per second, Weston Mill Pond Dam plays a crucial role in water management and flood control in the region. Its historical significance, combined with its functional purpose, makes it a noteworthy structure for water resource and climate enthusiasts to study and appreciate.

Year Completed

1916

Dam Length

309

Dam Height

15.5

River Or Stream

Lawrence Brook

Primary Dam Type

Masonry

Surface Area

162

Drainage Area

42

Nid Storage

1965

Hazard Potential

Significant

Nid Height

16
       
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.