Mishe - Mokwa Dam Reservoir Report

Last Updated: December 13, 2025

Mishe - Mokwa Dam, located in Medford Lakes, New Jersey, is a local government-owned structure that serves as a recreational site along the Haynes Creek.


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Summary

The dam is primarily designed for recreation purposes and is classified as an Earth type dam with a height of 16 feet and a length of 165 feet. It has a maximum storage capacity of 74 acre-feet and covers a surface area of 11 acres, making it a significant water resource in Burlington County.

Despite its recreational focus, the dam also plays a crucial role in water management and flood control in the area. With a high hazard potential but a satisfactory condition assessment, regular inspections are conducted to ensure the safety and integrity of the structure. The New Jersey Department of Environmental Protection (NJDEP) regulates the dam, emphasizing the importance of state oversight in maintaining water infrastructure and protecting downstream communities from potential risks.

Overall, Mishe - Mokwa Dam stands as a vital component of the local water resource system, providing both recreational opportunities and essential water management functions. Its presence along the Haynes Creek contributes to the environmental landscape of the region and highlights the intersection of water resources and climate resilience in New Jersey's infrastructure planning and management.

Dam Length

165

Dam Height

16

River Or Stream

Haynes Creek

Primary Dam Type

Earth

Surface Area

11

Drainage Area

0.83

Nid Storage

74

Hazard Potential

High

Nid Height

16
       
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.