Double Trouble North Dam Reservoir Report

Last Updated: December 8, 2025

Double Trouble North Dam in Ocean County, New Jersey, is a state-owned structure that plays a crucial role in flood risk reduction along the North Branch Forked River.


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Summary

This earth-type dam stands at 10 feet high and stretches for 1100 feet, with a storage capacity of 333 acre-feet. Despite its relatively low hazard potential, the dam is regularly inspected and maintained to ensure its fair condition and effectiveness in mitigating flooding events in the area.

Located in Berkeley Township, Double Trouble North Dam is under the regulatory oversight of the New Jersey Department of Environmental Protection (NJDEP). The dam's primary purpose is flood risk reduction, reflecting its role in protecting the surrounding community from potential water-related hazards. The dam's proximity to the Philadelphia District of the US Army Corps of Engineers highlights its importance in the regional water resource management infrastructure.

With a surface area of 50 acres and draining an area of 46.5 square miles, Double Trouble North Dam is a key component of the local watershed. Its fair condition and low hazard potential ensure that it continues to serve its purpose effectively. The dam's regular inspections, state regulation, and enforcement further underscore its critical role in maintaining water resource sustainability and climate resilience in the region.

Dam Length

1100

Dam Height

10

River Or Stream

North Branch Forked River

Primary Dam Type

Earth

Surface Area

50

Drainage Area

46.5

Nid Storage

333

Hazard Potential

Low

Nid Height

10
       
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.