Green Street Dam Reservoir Report

Last Updated: December 8, 2025

Green Street Dam, located in Woodbridge, New Jersey, along the Rahway River, serves as a critical flood risk reduction structure.


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Summary

Completed in 1988, this earth-type dam stands at 8 feet high and spans 755 feet in length, with a storage capacity of 10 acre-feet. Despite its relatively small size, the dam plays a significant role in protecting the surrounding area from potential flooding events, making it an essential asset for the local government.

Maintained and regulated by the New Jersey Department of Environmental Protection, Green Street Dam has been assessed as being in satisfactory condition, with a significant hazard potential. Regular inspections are conducted, with the most recent one taking place in May 2021, to ensure the dam's structural integrity and functionality. The dam's emergency action plan is up to date, reflecting a commitment to preparedness and risk management in the face of potential emergencies.

With its strategic location and purposeful design, Green Street Dam stands as a testament to effective flood risk reduction measures in Middlesex County. As climate change continues to impact water resources and weather patterns, structures like Green Street Dam play a crucial role in safeguarding communities and mitigating the effects of extreme weather events.

Year Completed

1988

Dam Length

755

Dam Height

8

River Or Stream

Rahway River

Primary Dam Type

Earth

Surface Area

1

Drainage Area

0.67

Nid Storage

10

Hazard Potential

Significant

Nid Height

8
       
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.