Slabtown Lake Dam Reservoir Report
Nearby: Daretown Lake Dam Sadies Dam
Last Updated: December 13, 2025
Located in Woodstown, New Jersey, Slabtown Lake Dam is a private structure built in 1926 for recreational purposes along the Salem River.
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Summary
Standing at a height of 10 feet and stretching 440 feet in length, the dam provides a storage capacity of 73 acre-feet with a normal storage level of 42 acre-feet. Despite its low hazard potential, the dam's condition has been assessed as poor, highlighting the need for maintenance and potential improvements.
Managed by the New Jersey Department of Environmental Protection, Slabtown Lake Dam is regularly inspected, with the last assessment conducted in April 2017. The dam's emergency action plan status and risk assessment measures are currently not available, raising concerns about its preparedness for potential emergencies. Although the dam's primary purpose is for recreation, its outdated condition assessment underscores the importance of proactive monitoring and maintenance to ensure the safety and integrity of the structure for both water resource and climate enthusiasts in the area.
With its historical significance and recreational value, Slabtown Lake Dam serves as a picturesque attraction in Upper Pittsgrove Township. As a gravity and earth structure, the dam's design reflects the engineering practices of its time, but ongoing assessments are needed to address its deteriorating condition. As climate change impacts water resources, the importance of maintaining and updating infrastructure like Slabtown Lake Dam becomes increasingly critical to ensure the safety of surrounding communities and the preservation of this unique water feature.
Year Completed |
1926 |
Dam Length |
440 |
Dam Height |
10 |
River Or Stream |
Salem River |
Primary Dam Type |
Earth |
Surface Area |
16 |
Drainage Area |
4.5 |
Nid Storage |
73 |
Hazard Potential |
Low |
Nid Height |
10 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Slabtown Lake Dam
Harding Highway Pittsgrove Township