Lake May (Section F) Reservoir Report

Last Updated: December 5, 2025

Lake May (Section F) is a picturesque water resource located in Liberty Township, Adams, Pennsylvania.


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Summary

Managed by the local government, this earth dam structure was completed in 1967 and serves primarily for recreational purposes. With a dam height of 22 feet and a storage capacity of 271 acre-feet, the lake covers a surface area of 24 acres and is fed by Toms Creek.

Despite its serene appearance, Lake May poses a high hazard potential due to its condition being assessed as fair. The Pennsylvania Department of Environmental Protection oversees state regulation, permitting, inspection, and enforcement to ensure the safety and integrity of the dam. A recent structural modification in 2010 further enhances its reliability, although the dam's hazard potential underscores the importance of regular inspections and risk management measures.

Enthusiasts of water resources and climate will find Lake May (Section F) a captivating destination for recreation and appreciation of natural beauty. As a regulated water body in Pennsylvania, its management and maintenance reflect a commitment to safeguarding both the environment and public safety. With its rich history and ongoing efforts to address potential risks, Lake May exemplifies the balance between human enjoyment and responsible stewardship of water resources in a changing climate.

Years Modified

2010 - Structural

Year Completed

1967

Dam Length

2850

Dam Height

22

River Or Stream

TOMS CREEK

Primary Dam Type

Earth

Surface Area

24

Drainage Area

0.3

Nid Storage

271

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

22
       
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.