Lost Creek Reservoir Report

Last Updated: December 5, 2025

Lost Creek, located in Somerset, Pennsylvania, is a private dam regulated by the Pennsylvania Department of Environmental Protection.


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Summary

Completed in 1954, this earth dam stands at a height of 18 feet and has a length of 315 feet, providing recreational opportunities in the area. The dam has a storage capacity of 270 acre-feet and serves as a significant water resource for the region, with a fair condition assessment as of the last inspection in 2018.

With a drainage area of 3 square miles, Lost Creek plays a crucial role in managing water flow and providing flood protection in Middlecreek Township. Despite its fair condition, the dam is considered to have a significant hazard potential, highlighting the importance of regular inspections and maintenance. The dam underwent structural modifications in 2014, ensuring its continued functionality and safety for both recreational users and surrounding communities.

Lost Creek is a vital part of the local landscape, offering not only recreational opportunities but also serving as a key water management infrastructure in the region. As climate change continues to impact water resources, the proper regulation and maintenance of dams like Lost Creek are essential for ensuring the safety and sustainability of our water supply. The collaboration between private owners, state agencies, and regulatory bodies is crucial in managing and protecting these important water resources for future generations.

Years Modified

2014 - Structural

Year Completed

1954

Dam Length

315

Dam Height

18

River Or Stream

LOST CREEK

Primary Dam Type

Earth

Surface Area

18

Drainage Area

3

Nid Storage

270

Hazard Potential

Significant

Foundations

Unlisted/Unknown

Nid Height

18
       
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.