Lake Natalie Reservoir Report

Last Updated: December 7, 2025

Lake Natalie, located in Lackawanna, Pennsylvania, is a private water resource regulated by the Pennsylvania Department of Environmental Protection.


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Summary

With a rockfill dam completed in 1900, this recreational lake offers a serene setting for water and climate enthusiasts to enjoy. The dam stands at a height of 10 feet and has a storage capacity of 163 acre-feet, providing ample water for various recreational activities.

Measuring 320 feet in length and covering a surface area of 44 acres, Lake Natalie is nestled in Lehigh Township along the Lehigh River. The dam has undergone multiple structural and hydraulic modifications in 2004, 2006, and 2013 to ensure its safety and efficiency. Despite being classified as having a high hazard potential, the dam's condition is deemed satisfactory, with regular inspections carried out to maintain its integrity.

As a popular destination for outdoor recreation, Lake Natalie serves as a vital water resource for the surrounding community. With its scenic beauty and ample storage capacity, this dam contributes to the conservation and enjoyment of water in Lackawanna County. Climate and water enthusiasts can appreciate the efforts made to ensure the safety and sustainability of this picturesque lake for generations to come.

Years Modified

2004 - Structural, 2006 - Structural, 2013 - Hydraulic

Year Completed

1900

Dam Length

320

Dam Height

10

River Or Stream

LEHIGH RIVER

Primary Dam Type

Rockfill

Surface Area

44

Drainage Area

15.7

Nid Storage

163

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.