Bethany Hole Dam Reservoir Report
Nearby: Kettle Run Dam Braddocks Mill Dam
Last Updated: December 13, 2025
Bethany Hole Dam, located in Medford, New Jersey, is a privately owned structure with a primary purpose of recreation and water supply.
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Summary
This earth dam stands at a height of 11.4 feet and has a length of 180 feet, providing a storage capacity of 12 acre-feet. Despite its relatively small size, the dam poses a significant hazard potential and has been assessed to be in poor condition as of September 2021.
Managed by the New Jersey Department of Environmental Protection, Bethany Hole Dam is subject to state regulation, inspection, and enforcement to ensure its safety and compliance with standards. The dam, situated on Haynes Creek-TR, serves the surrounding area with its water supply functions and recreational opportunities. However, with a risk assessment and risk management measures yet to be determined, there is a need for ongoing monitoring and maintenance to mitigate potential hazards associated with the dam.
In the event of an emergency, the dam's Emergency Action Plan (EAP) status remains unclear, highlighting the importance of preparedness and communication in safeguarding downstream communities. With a significant hazard potential and poor condition assessment, Bethany Hole Dam serves as a reminder of the crucial role that proactive risk management and maintenance play in ensuring the safety and sustainability of water resources in the face of changing climate conditions.
Dam Length |
180 |
Dam Height |
11.4 |
River Or Stream |
Haynes Creek-TR |
Primary Dam Type |
Earth |
Surface Area |
2 |
Drainage Area |
0.1 |
Nid Storage |
12 |
Hazard Potential |
Significant |
Nid Height |
11 |
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.
Bethany Hole Dam