Canistear Reservoir #2 Dam Reservoir Report

Last Updated: December 10, 2025

Canistear Reservoir #2 Dam, located in Sussex, New Jersey, was completed in 1896 and serves as a vital water supply source for the region.


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Summary

This masonry dam stands at a height of 44 feet and has a storage capacity of 7,400 acre-feet. The dam is situated on Peacock Brook and covers a surface area of 302 acres, with a drainage area of 5.3 square miles.

The dam is owned and regulated by the local government and falls under the jurisdiction of the New Jersey Department of Environmental Protection (NJDEP). Its primary purpose is water supply, and it undergoes regular inspections to ensure its structural integrity. Despite being classified as having a high hazard potential, the dam is currently assessed as being in fair condition, with the last inspection conducted in April 2021.

In the event of an emergency, there are protocols in place for the dam, although specific details about emergency action plans and risk management measures are not provided in the data. Overall, Canistear Reservoir #2 Dam plays a crucial role in water resource management in the region and highlights the importance of maintaining and monitoring infrastructure to ensure the safety and reliability of water supplies in the face of changing climate conditions.

Year Completed

1896

Dam Length

330

Dam Height

44

River Or Stream

Pacock Brook

Primary Dam Type

Masonry

Surface Area

302

Drainage Area

5.3

Nid Storage

7400

Hazard Potential

High

Nid Height

44
       
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.