Deerfield Lake Reservoir Report

Last Updated: December 6, 2025

Deerfield Lake, located in Salem Township, Pennsylvania, is a privately owned recreational reservoir that offers a tranquil escape amidst the natural beauty of Wayne County.


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Summary

The lake, constructed in 1971, has a dam height of 11.5 feet and a storage capacity of 133 acre-feet, providing ample opportunities for outdoor activities such as fishing, boating, and picnicking. With a surface area of 21 acres and a drainage area of 0.53 square miles, Deerfield Lake serves as a popular destination for water resource and climate enthusiasts looking to immerse themselves in the serene surroundings of Ariel Creek.

Managed by the Pennsylvania Department of Environmental Protection, Deerfield Lake has been classified as a high hazard potential dam with a fair condition assessment. The dam's primary purpose is for recreation, and it has undergone modifications in 2012 to enhance its hydraulic capabilities. Despite its remote location, the dam is regularly inspected and regulated by state authorities to ensure its safe operation and to mitigate any potential risks to surrounding communities. With its picturesque setting and well-maintained facilities, Deerfield Lake is a hidden gem for nature lovers and outdoor adventurers seeking a peaceful retreat in the heart of Pennsylvania's countryside.

As an integral part of the Philadelphia District's water infrastructure, Deerfield Lake not only contributes to the region's recreational opportunities but also plays a crucial role in flood control and water management. The dam's construction and operation are closely monitored to meet state permitting and inspection requirements, highlighting the commitment to maintaining the integrity and safety of this vital water resource. Whether enjoying a leisurely day by the lake or exploring the surrounding wilderness, visitors to Deerfield Lake can appreciate the harmonious balance between human enjoyment and environmental conservation in this idyllic corner of Wayne County.

Years Modified

2012 - Hydraulic

Year Completed

1971

Dam Length

800

Dam Height

11.5

River Or Stream

ARIEL CREEK

Primary Dam Type

Earth

Surface Area

21

Drainage Area

0.53

Nid Storage

133

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

12
       
Seasonal Comparison

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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.