Mountain Springs Dike Reservoir Report

Last Updated: December 8, 2025

Mountain Springs Dike in Monroe, Pennsylvania, stands as a testament to engineering ingenuity and serves as a recreational oasis for water resource and climate enthusiasts.


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Summary

Built in 1919, this private earth dam spans 480 feet in length and reaches a height of 8 feet, harnessing the waters of Appenzell Creek to create a reservoir with a maximum storage capacity of 707 acre-feet. With a surface area of 76 acres and a drainage area of 2.6 square miles, this tranquil sanctuary offers a haven for outdoor activities such as fishing, boating, and wildlife observation.

Despite its age, Mountain Springs Dike remains in good condition, with a hazard potential that is currently classified as undetermined. With a normal storage capacity of 436 acre-feet, the dam provides a vital source of water for the surrounding area while also serving as a picturesque backdrop for nature enthusiasts. While the dam's primary purpose is for recreation, its historical significance and functional value make it a valuable asset to the community.

Located in Jackson Township and managed by a private owner, Mountain Springs Dike is a hidden gem waiting to be explored by those passionate about water resources and climate conservation. As visitors wander the shores of the reservoir and witness the harmonious blend of human engineering and natural beauty, they are reminded of the vital role that sustainable water management plays in preserving our environment for future generations.

Year Completed

1919

Dam Length

480

Dam Height

8

River Or Stream

APPENZELL CREEK

Primary Dam Type

Earth

Surface Area

76

Drainage Area

2.6

Nid Storage

707

Hazard Potential

Undetermined

Foundations

Unlisted/Unknown

Nid Height

8
       
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.