Sugarland Run Dam Reservoir Report

Last Updated: December 5, 2025

Sugarland Run Dam in Loudoun, Virginia, is a privately owned structure designed for flood risk reduction along an unnamed tributary to Sugarland Run.


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Summary

Standing at 20 feet high and 550 feet long, this earth dam has a storage capacity of 51.5 acre-feet, with a normal storage level of 25.8 acre-feet. Despite being regulated by the Department of Conservation and Recreation in Virginia, the dam's hazard potential and condition assessment remain undetermined and not rated, respectively.

Located within the Baltimore District of the US Army Corps of Engineers, Sugarland Run Dam plays a crucial role in mitigating flood risks in the area. While its emergency action plan status and risk assessment measures remain to be determined, the dam's structural integrity and operational efficiency are subject to regular inspections by state authorities. With its primary purpose of flood risk reduction, this dam serves as a vital component of water resource management in the region.

For water resource and climate enthusiasts, Sugarland Run Dam offers a fascinating case study of a privately owned structure designed to address flood risks in Loudoun, Virginia. As discussions around dam safety, emergency preparedness, and risk management continue, this earth dam stands as a testament to the ongoing efforts to protect communities and ecosystems from the impacts of extreme weather events and changing climate conditions.

Dam Length

550

Dam Height

20

River Or Stream

Un-named Tr to Sugarland Run

Primary Dam Type

Earth

Surface Area

4.6

Hydraulic Height

20

Nid Storage

51.5

Structural Height

20

Hazard Potential

Undetermined

Nid Height

20
       
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.