Manor Lake Reservoir Report

Last Updated: December 8, 2025

Manor Lake, located in Bucks County, Pennsylvania, is a privately owned recreational water resource that was completed in 1930.


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Summary

The dam, with a height of 9 feet and a length of 3383 feet, serves to create a storage capacity of 5329 acre-feet, providing a surface area of 380 acres for recreational activities. The lake is situated along Scotts Creek and is under the regulatory jurisdiction of the Pennsylvania Department of Environmental Protection.

Despite its low hazard potential, Manor Lake has been assessed to be in poor condition, raising concerns about its long-term sustainability and safety. The last inspection in May 2019 highlighted the need for improvements and maintenance. With a designated inspection frequency of 5 years, there is a clear need for continued monitoring and potential rehabilitation efforts to ensure the integrity of the dam and the safety of the surrounding community.

Enthusiasts interested in water resource management and climate resilience may find Manor Lake to be a valuable case study in balancing recreational benefits with the need for proper maintenance and risk management. As climate change impacts continue to pose challenges to water infrastructure, understanding the condition and regulatory framework of dams like Manor Lake can offer insights into sustainable practices and resilience strategies for the future.

Year Completed

1930

Dam Length

3383

Dam Height

9

River Or Stream

SCOTTS CREEK

Primary Dam Type

Earth

Surface Area

380

Drainage Area

4.7

Nid Storage

5329

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

9
       
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.