South River Colony Parcel A Swm Lake Reservoir Report

Last Updated: December 5, 2025

South River Colony Parcel A Stormwater Management (SWM) Lake, also known as Bass Pond, is a critical flood risk reduction infrastructure owned by the local government in Edgewater, Maryland.


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Summary

This Earth dam, constructed in 1991 and modified in 2003, stands at a height of 14 feet and spans 1400 feet in length. With a storage capacity of 100 acre-feet and a normal storage of 20 acre-feet, this SWM lake covers a surface area of 5 acres and serves a drainage area of 0.42 square miles.

Managed by the Maryland Dam Safety regulatory agency, South River Colony SWM Lake has a low hazard potential and a moderate risk assessment rating. Despite not being conditionally assessed, this SWM lake has a regular inspection frequency of 5 years to ensure its structural integrity and functionality. With an uncontrolled spillway type and a maximum discharge capacity of 2850 cubic feet per second, this infrastructure plays a crucial role in mitigating flood risks in the surrounding Glebe Creek-TR watershed.

Overall, South River Colony Parcel A SWM Lake is a key component of the flood risk reduction strategy in Anne Arundel County, Maryland. As a vital piece of infrastructure with a low hazard potential and moderate risk assessment, this Earth dam plays a crucial role in managing stormwater and protecting the local community from potential flooding events. With regular inspections and oversight by the Maryland Dam Safety regulatory agency, this SWM lake continues to serve its primary purpose effectively while contributing to the overall resilience of the region in the face of changing climate patterns.

Year Completed

1991

Dam Length

1400

Dam Height

14

River Or Stream

Glebe Creek-TR

Primary Dam Type

Earth

Surface Area

5

Drainage Area

0.42

Nid Storage

100

Hazard Potential

Low

Foundations

Soil

Nid Height

14
       
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.