Franklinville Lake Dam Reservoir Report

Last Updated: December 5, 2025

Franklinville Lake Dam in Gloucester, New Jersey, stands as a vital structure regulating the flow of the Little Ease Run Branch.


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Summary

Owned by the local government, this earth-type dam serves primarily for recreational purposes, offering a serene and picturesque backdrop for visitors to enjoy. With a height of 8 feet and a length of 800 feet, the dam provides a storage capacity of 52 acre-feet, encompassing a surface area of 31 acres within its drainage area of 11.7 square miles.

Despite its essential role in the community, Franklinville Lake Dam poses a high hazard potential due to its poor condition assessment, with the last inspection conducted in April 2021. The dam is regulated by the New Jersey Department of Environmental Protection and undergoes state permitting, inspection, and enforcement activities. The emergency action plan for the dam was last revised in August 2021, ensuring preparedness for any unforeseen events. As climate change continues to impact water resources, the maintenance and monitoring of Franklinville Lake Dam will be crucial to safeguarding the surrounding area and ensuring the safety of residents and visitors alike.

Dam Length

800

Dam Height

8

River Or Stream

Little Ease Run Branch

Primary Dam Type

Earth

Surface Area

31

Drainage Area

11.7

Nid Storage

52

Hazard Potential

High

Nid Height

8
       
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.