Hamlin Lake Park Reservoir Report

Last Updated: December 8, 2025

Hamlin Lake Park in McKean, Pennsylvania is a picturesque destination boasting a stunning earth dam completed in 1915 across Marvin Creek.


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Summary

The park spans 27.6 acres and offers a tranquil retreat for water resource and climate enthusiasts. The dam stands at a height of 10 feet and has a storage capacity of 144 acre-feet, making it a vital asset for recreation purposes in the area.

Managed by the Pennsylvania Department of Environmental Protection, Hamlin Lake Park is a regulated site with state inspection and enforcement protocols in place. Despite its high hazard potential, the dam is assessed to be in fair condition, ensuring the safety of visitors and the surrounding community. The park's location in Smethport Borough, nestled within the Pittsburgh District, adds to its allure as a recreational hub for outdoor activities such as fishing, hiking, and wildlife observation.

With its rich history and scenic beauty, Hamlin Lake Park stands as a beacon of conservation and sustainable water management in Pennsylvania. Whether you are a local resident or a nature enthusiast, a visit to this charming park promises a rejuvenating experience amidst the serenity of Marvin Creek and the lush surroundings of McKean County. Explore the wonders of this hidden gem and immerse yourself in the harmony of water resources and climate preservation at Hamlin Lake Park.

Year Completed

1915

Dam Length

653

Dam Height

10

River Or Stream

MARVIN CREEK

Primary Dam Type

Earth

Surface Area

27.6

Drainage Area

56.7

Nid Storage

144

Hazard Potential

High

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.