Sullivan Reservoir Report

Last Updated: December 9, 2025

Sullivan is a private-owned dam located in Cherry Township, Sullivan County, Pennsylvania, along Birch Creek.


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Summary

Built in 1948 for recreational purposes, this Earth-type dam stands at 11 feet high and spans 165 feet in length, with a storage capacity of 123 acre-feet. The dam is regulated by the Pennsylvania Department of Environmental Protection and undergoes regular inspections, with a low hazard potential rating.

Despite its modest size and low hazard potential, Sullivan serves as a vital recreational resource in the area, offering 3 acres of surface area for activities such as fishing, boating, and wildlife observation. The dam's close proximity to nature and the Buffalo District adds to its appeal for water resource and climate enthusiasts seeking to explore the diverse ecosystems of Pennsylvania.

With its serene location and well-maintained structure, Sullivan represents a harmonious blend of human intervention and natural beauty, showcasing how dams can provide both functional benefits and recreational opportunities while maintaining environmental integrity. For those passionate about water resources and climate conservation, Sullivan stands as a prime example of responsible dam management in a picturesque setting.

Year Completed

1948

Dam Length

165

Dam Height

11

River Or Stream

BIRCH CREEK

Primary Dam Type

Earth

Surface Area

3

Drainage Area

7.5

Nid Storage

123

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

11
       
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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.