Beaver Creek (Pa-433) Reservoir Report

Last Updated: December 6, 2025

Beaver Creek (Pa-433) is a vital flood risk reduction structure located in East Brandywine Township, Chester County, Pennsylvania.


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Summary

Built in 1975 by the USDA NRCS, this earth dam stands at a height of 36 feet and spans a length of 1370 feet. With a storage capacity of 1410 acre-feet and a drainage area of 3.1 square miles, Beaver Creek plays a crucial role in mitigating flood risks in the area.

Managed by the Pennsylvania Department of Environmental Protection, Beaver Creek is regularly inspected to ensure its structural integrity and functionality. With a high hazard potential, this dam is classified as being in satisfactory condition, providing a sense of security to the local community. The dam has undergone modifications in 2005 and 2008, demonstrating a commitment to maintaining its effectiveness in flood risk reduction.

Chrissy Houlahan, the Congressional representative for the area, oversees the regulatory aspects of Beaver Creek, ensuring that it complies with state regulations and standards. As a key component in the local water resource management system, Beaver Creek serves as a testament to the importance of proactive flood risk reduction measures in safeguarding communities and the environment against the impacts of climate change.

Years Modified

2005 - Other, 2008 - Other

Year Completed

1975

Dam Length

1370

Dam Height

36

River Or Stream

BEAVER CREEK

Primary Dam Type

Earth

Surface Area

11

Drainage Area

3.1

Nid Storage

1410

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

36
       
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.