Btmua Reservoir Dam Reservoir Report

Last Updated: December 8, 2025

The Btmua Reservoir Dam in Brick Township, New Jersey, is a crucial water supply structure owned and regulated by the local government.


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Summary

Situated offstream with a height of 20 feet and a length of 5000 feet, this earth-type dam serves the primary purpose of water supply, with a storage capacity of 10 acre-feet and a surface area of 84 acres. Despite its high hazard potential, the dam is currently in satisfactory condition, as assessed during the last inspection in October 2021.

Managed by the New Jersey Department of Environmental Protection (NJDEP), the Btmua Reservoir Dam plays a vital role in ensuring water availability in the region. Located in Ocean County, the dam is subject to state jurisdiction and regulatory oversight, with regular inspections and enforcement measures in place. Although there have been no modifications or major incidents reported in recent years, the dam's emergency action plan (EAP) readiness and risk assessment protocols could benefit from further review and updating to meet current guidelines and standards.

As a significant infrastructure asset in the area, the Btmua Reservoir Dam provides essential water resources while also posing potential risks that require careful management and preparedness. With its strategic location and critical role in water supply, ongoing monitoring and maintenance efforts are essential to ensure the dam's continued safety and functionality for the surrounding community and environment.

Dam Length

5000

Dam Height

20

River Or Stream

Offstream

Primary Dam Type

Earth

Surface Area

84

Drainage Area

0.5

Nid Storage

10

Hazard Potential

High

Nid Height

20
       
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.