Conashaugh Lake Reservoir Report

Last Updated: December 7, 2025

Conashaugh Lake, located in Dingman Township, Pennsylvania, is a privately owned recreational lake regulated by the Pennsylvania Department of Environmental Protection.


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Summary

Built in 1969, this Earth-type dam stands at a height of 13.7 feet and has a storage capacity of 206 acre-feet. With a surface area of 20.88 acres and a normal storage level of 86.8 acre-feet, Conashaugh Lake provides a picturesque setting for outdoor activities such as fishing, boating, and swimming.

Despite its fair condition assessment and significant hazard potential, Conashaugh Lake remains a popular destination for water enthusiasts in Pike County, Pennsylvania. The dam's spillway type is uncontrolled, and it has a drainage area of 0.17 square miles, with a moderate risk rating. The last inspection in February 2020 found the dam to be in fair condition, with an inspection frequency of every two years. With its tranquil waters and scenic surroundings, Conashaugh Lake continues to be a beloved spot for recreation and relaxation in the region.

As part of the Philadelphia District, Conashaugh Lake is overseen by the Pennsylvania Department of Environmental Protection, ensuring that it meets state regulatory standards for safety and maintenance. While it may pose a significant hazard if not properly managed, the dam's risk level is currently rated as moderate. With its long history of providing recreational opportunities for the community, Conashaugh Lake remains a cherished water resource for residents and visitors alike, offering a tranquil escape in the heart of Pike County's natural beauty.

Year Completed

1969

Dam Length

566

Dam Height

13.7

River Or Stream

TR RATTLESNAKE CREEK

Primary Dam Type

Earth

Surface Area

20.88

Drainage Area

0.17

Nid Storage

206

Hazard Potential

Significant

Foundations

Unlisted/Unknown

Nid Height

14
       
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.