Upper Lummis Pond Dam Reservoir Report

Last Updated: December 13, 2025

Upper Lummis Pond Dam in Cedarville, New Jersey, is a privately-owned structure situated on Cedar Creek.


°F

°F

mph

Wind

%

Humidity

Summary

This earth dam, standing at a height of 8 feet and spanning 475 feet in length, primarily serves for recreational purposes, providing a serene backdrop for water enthusiasts and nature lovers alike. With a storage capacity of 97 acre-feet and a surface area of 15 acres, the dam offers a peaceful escape within Lawrence Township.

Managed by the New Jersey Department of Environmental Protection, the dam has a low hazard potential and has not been rated for its condition as of the last inspection in May 2002. While the dam has not been modified over the years, it undergoes inspections every four years to ensure its safety and functionality. Despite being privately owned, the dam falls under state jurisdiction, with permits, inspections, and enforcement handled by the NJDEP to guarantee compliance with regulations and standards.

The picturesque Upper Lummis Pond Dam, nestled in Cumberland County, New Jersey, not only enhances the natural landscape of the region but also provides a recreational haven for locals and visitors to enjoy. With its tranquil water body and surrounding greenery, this dam on Cedar Creek offers a peaceful retreat for water resource and climate enthusiasts seeking a serene escape in the heart of New Jersey.

Dam Length

475

Dam Height

8

River Or Stream

Cedar Creek

Primary Dam Type

Earth

Surface Area

15

Drainage Area

4

Nid Storage

97

Hazard Potential

Low

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.