Pine Grove Reservoir Report

Last Updated: December 8, 2025

Pine Grove, located in Little Britain Township in Chester County, Pennsylvania, is a stone dam constructed in 1919 along the Octoraro Creek.


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Summary

This recreational dam serves as a vital water resource for the area, providing a storage capacity of 153 acre-feet and covering a surface area of 10 acres. With a dam height of 10 feet and a length of 200 feet, Pine Grove contributes to the conservation and management of water in the region, supporting various recreational activities for the local community.

Managed by the Pennsylvania Department of Environmental Protection, Pine Grove is regulated, inspected, and enforced for safety and compliance with state guidelines. Despite its low hazard potential, the dam has not been rated for its condition as of yet. The dam's emergency action plan status, risk assessment, and inundation maps preparedness are currently undisclosed, indicating a need for further evaluation and risk management measures to ensure the safety and sustainability of this important water infrastructure.

For water resource and climate enthusiasts, Pine Grove offers a glimpse into the historical and environmental significance of dam structures in Pennsylvania. With its peaceful surroundings and recreational opportunities, Pine Grove stands as a reminder of the delicate balance between water conservation, public safety, and sustainable development in the face of changing climate patterns and increasing demands on water resources. As efforts continue to assess and enhance the resilience of Pine Grove and similar structures, the importance of proactive risk management and community engagement in water management practices becomes increasingly clear.

Year Completed

1919

Dam Length

200

Dam Height

10

River Or Stream

OCTORARO CREEK

Primary Dam Type

Stone

Surface Area

10

Drainage Area

145

Nid Storage

153

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

10
       
Seasonal Comparison

Weather Forecast

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.