Amphibious Lake Dam Reservoir Report

Last Updated: December 6, 2025

Amphibious Lake Dam, located in Burlington, New Jersey, is a vital water resource managed by the US Air Force with a primary purpose of recreation.


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Summary

Completed in 1967, this Earth dam stands at a height of 21 feet and has a storage capacity of 126 acre-feet, making it a significant structure along the Newbold Run river. With a low hazard potential and a controlled spillway, the dam is designed to ensure the safety of the surrounding area while providing ample recreational opportunities.

The dam's location in Browns Mills, near the city of New Hanover, offers visitors a picturesque setting for activities such as fishing, boating, and wildlife observation. The dam's surface area of 13.5 acres and drainage area of 0.62 square miles contribute to its ecological significance in the region. Despite its age, the dam remains well-maintained by the US Air Force, with regular inspections conducted to ensure its structural integrity and safety for the public.

With a very high risk assessment rating of 1, Amphibious Lake Dam is a critical infrastructure managed by the US Air Force to mitigate potential risks and protect the surrounding community. As a popular spot for outdoor enthusiasts and nature lovers, the dam serves as a valuable resource for both recreation and water management in the area. Its controlled spillway, low hazard potential, and well-maintained condition make it a model structure for sustainable water resource management in New Jersey.

Year Completed

1967

Dam Length

400

Dam Height

13

River Or Stream

NEWBOLD RUN

Primary Dam Type

Earth

Surface Area

13.5

Hydraulic Height

11

Drainage Area

0.62

Nid Storage

126

Structural Height

21

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

21
       
Seasonal Comparison

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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.