Roosevelt Park Dam Reservoir Report

Last Updated: December 8, 2025

Roosevelt Park Dam in Middlesex, New Jersey, is a vital structure along the South Branch Rahaway River, serving as a key recreational resource for the local community.


°F

°F

mph

Wind

%

Humidity

Summary

Owned by the local government, this earth dam stands at a height of 7.7 feet and has a storage capacity of 26 acre-feet. With a surface area of 11 acres and a drainage area of 1.2 square miles, the dam plays a crucial role in managing water resources in the region.

Maintained by the New Jersey Department of Environmental Protection, Roosevelt Park Dam has been deemed to have a significant hazard potential but is currently in satisfactory condition. The dam offers a serene backdrop for outdoor activities and wildlife observation, making it a popular spot for enthusiasts interested in water resources and climate studies. With its strategic location in Edison Township and close oversight by regulatory agencies, the dam serves as a prime example of sustainable infrastructure that balances recreational use with environmental stewardship.

With regular inspections and a well-prepared emergency action plan, Roosevelt Park Dam ensures the safety of nearby communities while providing a picturesque setting for residents and visitors to enjoy. As part of ongoing risk management measures, the dam continues to be a focal point for water resource and climate enthusiasts seeking to understand the intersection of infrastructure, nature, and public recreation in a changing climate.

Dam Length

638

Dam Height

7.7

River Or Stream

South Branch Rahaway River

Primary Dam Type

Earth

Surface Area

11

Drainage Area

1.2

Nid Storage

26

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.