Glatco Lake Reservoir Report

Last Updated: December 5, 2025

Glatco Lake, located in Heidelberg Township, York, Pennsylvania, is a private recreational lake regulated by the Pennsylvania Department of Environmental Protection.


°F

°F

mph

Wind

%

Humidity

Summary

With a dam height of 20 feet and a storage capacity of 73 acre-feet, the lake covers a surface area of 6 acres and drains an area of 0.35 square miles through TR Oil Creek. The primary purpose of the lake is recreation, offering visitors a tranquil and scenic environment for various water activities.

Despite its picturesque setting, Glatco Lake has a high hazard potential and an unsatisfactory condition assessment, indicating potential risks associated with its dam structure. The last inspection in March 2021 revealed the need for improvements to ensure the safety and integrity of the dam. While the lake has not been modified in recent years, it remains crucial for the regulatory agency to monitor and enforce safety measures to mitigate any potential hazards and protect surrounding communities.

Water resource and climate enthusiasts interested in Glatco Lake can appreciate its contribution to local recreation and its ecological significance within the region. As a privately owned water body, the lake serves as a reminder of the importance of proper dam maintenance and regulatory oversight to ensure the safety of both the environment and the public. With ongoing inspections and potential risk management measures, Glatco Lake represents a balancing act between human enjoyment and environmental stewardship in the face of changing climate conditions.

Dam Length

275

Dam Height

20

River Or Stream

TR OIL CREEK

Primary Dam Type

Earth

Surface Area

6

Drainage Area

0.35

Nid Storage

73

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

20
       
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.