Furnace Brook W.S. #2 Dam Reservoir Report

Last Updated: December 6, 2025

Furnace Brook W.S.


°F

°F

mph

Wind

%

Humidity

Summary

#2 Dam, located in Warren County, New Jersey, is a crucial structure owned by the local government and regulated by the New Jersey Department of Environmental Protection. Built in 1971, this earth dam stands at a height of 55 feet and spans a length of 1680 feet, with a primary purpose of flood risk reduction. With a storage capacity of 1440 acre-feet and a drainage area of 2.8 square miles, the dam plays a vital role in managing water resources in the region.

Managed and funded by the Natural Resources Conservation Service, Furnace Brook W.S. #2 Dam has a high hazard potential but is currently assessed to be in satisfactory condition as of the last inspection in October 2021. Despite its critical role in flood risk reduction, there are no spillways or outlet gates associated with the dam. The dam's emergency action plan was last revised in October 2018, and it meets the necessary guidelines for ensuring public safety in case of a dam failure.

In the event of any emergencies or risk assessments, the local authorities and relevant agencies are responsible for taking necessary measures to mitigate potential risks associated with the dam. With its strategic location and design for flood risk reduction, Furnace Brook W.S. #2 Dam stands as a key infrastructure for water resource management in the region, highlighting the importance of maintaining and monitoring such critical structures for climate resilience and disaster preparedness.

Year Completed

1971

Dam Length

1680

Dam Height

55

River Or Stream

Furnace Brook

Primary Dam Type

Earth

Surface Area

53

Drainage Area

2.8

Nid Storage

1440

Hazard Potential

High

Nid Height

55
       
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.