Canistear Reservoir Dike Reservoir Report

Last Updated: December 10, 2025

The Canistear Reservoir Dike in Hardyston Township, New Jersey, is a crucial water infrastructure owned by the local government and regulated by the New Jersey Department of Environmental Protection.


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Summary

This earth dam stands at a height of 14 feet and stretches 150 feet in length, with a storage capacity of 6000 acre-feet to support water supply needs in the region. Situated along the Pequannock River-TR, this reservoir plays a vital role in managing water resources and ensuring a reliable water supply for the community.

With a low hazard potential and satisfactory condition assessment, the Canistear Reservoir Dike has been inspected regularly to uphold safety standards. Although the dam was last assessed in 2012, its emergency action plan status and risk management measures are currently unspecified. As a primary water source for the area, this structure serves as a key component of the local water supply system and contributes to water resource management efforts in Sussex County, New Jersey. Water resource and climate enthusiasts can appreciate the significance of the Canistear Reservoir Dike in sustaining water security and resilience in the region.

Dam Length

150

Dam Height

14

River Or Stream

Pequannock River-TR

Primary Dam Type

Earth

Surface Area

400

Drainage Area

5

Nid Storage

6000

Hazard Potential

Low

Nid Height

14
       
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.