Cranberry Lakes Dam #5 Reservoir Report

Last Updated: December 13, 2025

Cranberry Lakes Dam #5, located in Medford Township, New Jersey, is a private earth dam with a primary purpose of recreation.


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Summary

The dam stands at a height of 11 feet and has a length of 300 feet, providing a storage capacity of 12 acre-feet. The dam is situated on the Birchwood Lake-TR river or stream and is regulated by the New Jersey Department of Environmental Protection (NJDEP).

The dam has a significant hazard potential but is currently assessed to be in satisfactory condition as of the last inspection in July 2020. The dam is subject to regular inspections every two years to ensure its safety and functionality. Despite its potential risk, Cranberry Lakes Dam #5 plays a crucial role in flood risk reduction in the area while also providing recreational opportunities for the community.

As an enthusiast of water resources and climate, understanding the key details of Cranberry Lakes Dam #5 offers insight into the management and maintenance of vital infrastructure that serves both practical and recreational purposes in Burlington County, New Jersey. The dam's location, design, and regulatory oversight provide a comprehensive picture of its role in the local ecosystem and its impact on surrounding areas in terms of water storage, flood management, and community recreation.

Dam Length

300

Dam Height

11

River Or Stream

Birchwood Lake-TR

Primary Dam Type

Earth

Surface Area

2

Drainage Area

0.3

Nid Storage

12

Hazard Potential

Significant

Nid Height

11
       
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.