Horsham Towne Upper Pond Reservoir Report

Last Updated: December 6, 2025

Horsham Towne Upper Pond, located in Horsham Township, Montgomery County, Pennsylvania, serves as a crucial infrastructure for flood risk reduction along the TR Pennypack Creek.


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Summary

This private dam, with a height of 17 feet and a storage capacity of 22 acre-feet, plays a significant role in managing water flow and protecting the surrounding area from potential flooding events.

Managed and regulated by the Pennsylvania Department of Environmental Protection, this earth dam primarily serves the purpose of flood risk reduction. Despite being classified as having a significant hazard potential, the dam's condition is assessed as fair, indicating a need for ongoing monitoring and potentially maintenance efforts to ensure its continued effectiveness in mitigating flood risks in the region.

With a surface area of 2 acres and a drainage area of 0.3 square miles, Horsham Towne Upper Pond stands as a vital component of the local water resource infrastructure. Its strategic location and design make it a key asset in safeguarding the community against the impacts of extreme weather events and climate variability, making it an essential structure for water resource and climate enthusiasts to be aware of and appreciate for its role in enhancing resilience to natural hazards.

Dam Length

300

Dam Height

17

River Or Stream

TR PENNYPACK CREEK

Primary Dam Type

Earth

Surface Area

2

Drainage Area

0.3

Nid Storage

22

Hazard Potential

Significant

Foundations

Unlisted/Unknown

Nid Height

17
       
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.