Raven Run No 2 Reservoir Report

Last Updated: December 15, 2025

Raven Run No 2 is a historic earth dam located in West Mahanoy Township, Pennsylvania, built in 1885 for the primary purpose of water supply.


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Summary

This dam on Lost Creek stands at a height of 37 feet and has a length of 475 feet, providing a storage capacity of 133 acre-feet. The dam serves as a key infrastructure for water management in the region with a fair condition assessment and a high hazard potential.

Managed by local government authorities and regulated by the Pennsylvania Department of Environmental Protection, Raven Run No 2 is subject to regular inspections, enforcing state permitting, and ensuring compliance with safety measures. The dam's location in Schuylkill County highlights its significance in safeguarding water resources and supporting the surrounding ecosystem. Despite its age, the dam continues to play a crucial role in maintaining water supply reliability and flood control in the area.

Water resource and climate enthusiasts will appreciate Raven Run No 2 for its historical significance, engineering design, and environmental impact. As a focal point for water supply management in the region, the dam's structure, storage capacity, and regulatory oversight contribute to the sustainable use of water resources and the protection of downstream communities. With ongoing monitoring and maintenance efforts, Raven Run No 2 serves as a valuable asset in ensuring water security and resilience in the face of changing climatic conditions.

Year Completed

1885

Dam Length

475

Dam Height

37

River Or Stream

LOST CREEK

Primary Dam Type

Earth

Surface Area

9

Drainage Area

0.93

Nid Storage

133

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

37
       
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.