Mill Pond Reservoir Report

Last Updated: December 6, 2025

Mill Pond, located in South Canaan Township, Pennsylvania, is a private hydroelectric dam on TR Middle Creek.


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Summary

Completed in 1917, this earth dam stands at 10 feet high and spans a length of 156 feet. With a storage capacity of 39 acre-feet and a drainage area of 11.3 square miles, Mill Pond serves as a vital water resource in Wayne County.

Managed by the Pennsylvania Department of Environmental Protection, Mill Pond is regulated, inspected, and enforced to ensure safety and compliance with state guidelines. Despite being classified as having a significant hazard potential, the dam's condition is assessed as fair. Regular inspections are conducted, with the last one taking place in November 2019, to mitigate risks and maintain the dam's integrity.

As a key structure for hydroelectric purposes, Mill Pond contributes to the local energy supply while also playing a role in water resource management. With its historical significance and ongoing regulatory oversight, this dam serves as a focal point for water resource and climate enthusiasts interested in sustainable infrastructure and environmental stewardship in Pennsylvania.

Year Completed

1917

Dam Length

156

Dam Height

10

River Or Stream

TR MIDDLE CREEK

Primary Dam Type

Earth

Drainage Area

11.3

Nid Storage

39

Hazard Potential

Significant

Foundations

Unlisted/Unknown

Nid Height

10
       
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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.