Sunset Lake Dam Reservoir Report

Last Updated: December 5, 2025

Sunset Lake Dam, located in Bridgeton City, New Jersey, is a local government-owned structure that has been regulating the flow of the Cohansey River since its completion in 1927.


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Summary

With a primary purpose of recreation, this earth dam stands at a height of 20 feet and has a length of 6200 feet, creating a surface area of 94 acres and a normal storage capacity of 310 acre-feet. Despite its fair condition assessment, the dam has a high hazard potential, highlighting the importance of regular inspections and maintenance.

Managed by the New Jersey Department of Environmental Protection, Sunset Lake Dam is state-regulated, with permits, inspections, and enforcement measures in place to ensure its safe operation. The dam's last inspection in April 2019 revealed its fair condition, prompting a biennial inspection frequency to monitor any changes. While no emergency action plan (EAP) is currently in place, it is crucial for stakeholders to consider implementing one to address any potential risks or hazards associated with the dam.

As a key feature in the local landscape, Sunset Lake Dam plays a vital role in providing recreational opportunities and regulating the water flow of the Cohansey River. With its historical significance dating back to the early 20th century, this earth dam serves as a reminder of the importance of sustainable water resource management and climate resilience in the face of changing environmental conditions.

Year Completed

1927

Dam Length

6200

Dam Height

20

River Or Stream

Cohansey River

Primary Dam Type

Earth

Surface Area

94

Drainage Area

45.7

Nid Storage

310

Hazard Potential

High

Nid Height

20
       
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.