Boonton Reservoir Dam Reservoir Report

Last Updated: December 10, 2025

Boonton Reservoir Dam, located in Boonton, New Jersey, is a critical piece of infrastructure owned by the local government and regulated by the New Jersey Department of Environmental Protection.


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Summary

Built in 1900, this Earth-type dam serves as a vital water supply source for the region, with a normal storage capacity of 1060 acre-feet and a maximum storage capacity of 1265 acre-feet. The dam stands at a height of 14.9 feet and spans a length of 600 feet, playing a crucial role in managing water resources in Morris County.

With its significant hazard potential, the Boonton Reservoir Dam undergoes regular inspections to ensure its structural integrity and overall condition. The most recent assessment in March 2021 deemed the dam to be in satisfactory condition, providing assurance of its ability to withstand potential emergencies. In addition, emergency action plans are in place, although details about their last revision date and adherence to guidelines are currently unavailable. Boonton Reservoir Dam's role in water supply management and its importance for the community underscore the need for continued monitoring and maintenance to uphold public safety and environmental stewardship.

Year Completed

1900

Dam Length

600

Dam Height

14.9

River Or Stream

Stony Brook-TR

Primary Dam Type

Earth

Surface Area

133

Drainage Area

2

Nid Storage

1265

Hazard Potential

Significant

Nid Height

15
       
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.