Deer Lake Reservoir Report

Last Updated: December 9, 2025

Deer Lake, located in Shrewsbury Township, Sullivan County, Pennsylvania, is a private water resource regulated by the Pennsylvania Department of Environmental Protection.



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Summary

With a primary purpose of recreation, this earth dam spans 228 feet in length and stands at a height of 7 feet. The reservoir has a normal storage capacity of 55.16 acre-feet and a maximum storage capacity of 75.76 acre-feet, providing plenty of opportunities for outdoor enthusiasts to enjoy.

Constructed in the year 2000, Deer Lake underwent modifications both hydraulically and structurally to enhance its functionality. The earth dam, with a buttress core type and unlisted/unknown foundations, presents a significant hazard potential. Despite its hazard potential, the condition of Deer Lake is currently not rated, with its last inspection taking place in September 2017. While the risk assessment and management measures for this water resource are not specified, the presence of regular state inspections and enforcement ensures the safety and integrity of Deer Lake for its recreational users.

With its picturesque location along Ogdonia Creek and a surface area of 19.7 acres, Deer Lake offers a serene escape for water resource and climate enthusiasts. Its strategic position and purpose for recreation make it a valuable asset in the region, attracting visitors and locals alike to enjoy its tranquil surroundings and leisure activities. As a state-regulated water resource, Deer Lake is a testament to the efforts of the Pennsylvania Department of Environmental Protection in overseeing the management and maintenance of essential natural reservoirs for public enjoyment and environmental preservation.

Years Modified

2000 - Hydraulic, 2000 - Structural

Dam Length

228

Dam Height

7

River Or Stream

OGDONIA CREEK

Primary Dam Type

Earth

Surface Area

19.7

Drainage Area

0.61

Nid Storage

75.76

Hazard Potential

Significant

Foundations

Unlisted/Unknown

Nid Height

7
       
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.