Wyndemere Swm Pond Reservoir Report

Last Updated: December 5, 2025

Wyndemere Swm Pond, also known as Old Scaggsville Road, is a privately owned water resource in Howard County, Maryland.


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Summary

Constructed in 1995 by TSA Group & E2Si, this earth-type dam serves primarily for flood risk reduction along the Patuxent River-TR. Standing at a height of 13.2 feet and stretching 380 feet in length, it has a storage capacity of 8 acre-feet and a maximum discharge rate of 1443 cubic feet per second.

Managed by the Maryland Dam Safety agency, Wyndemere Swm Pond has a significant hazard potential but has been assessed to be in satisfactory condition as of June 2018. The dam is subject to regular inspections, with the last one conducted in May 2019, and has an established Emergency Action Plan to ensure preparedness in case of any emergencies. Its risk assessment is rated as moderate, reflecting the potential risks associated with its location and design.

Water resource and climate enthusiasts will find Wyndemere Swm Pond an intriguing case study for flood risk reduction infrastructure in Maryland. With its unique design features, regulatory oversight by the state, and management practices, this dam stands as a testament to the importance of maintaining and monitoring critical water resources to ensure the safety and well-being of surrounding communities.

Year Completed

1995

Dam Length

380

Dam Height

13.2

River Or Stream

Patuxent River-TR

Primary Dam Type

Earth

Drainage Area

0.13

Nid Storage

8

Hazard Potential

Significant

Foundations

Unlisted/Unknown

Nid Height

13
       
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.