The Lakes At Red Rock Dam Reservoir Report

Last Updated: December 5, 2025

Located in Loudoun, Virginia, The Lakes At Red Rock Dam is a private water resource managed by the Department of Conservation and Recreation.


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Summary

This recreational dam on Cattail Branch offers a serene escape with a surface area of 7.33 acres and a normal storage capacity of 45.7 acre-feet. The dam stands at 18 feet in height, providing a picturesque setting for water and climate enthusiasts to enjoy various outdoor activities.

While the dam's hazard potential is classified as high, its condition assessment remains satisfactory, ensuring the safety of visitors. The last inspection in December 2017 revealed no significant issues, with regular inspections conducted to maintain the dam's integrity. With a maximum storage capacity of 126.02 acre-feet, The Lakes At Red Rock Dam offers a beautiful oasis for recreational activities while also prioritizing safety and environmental conservation. Visitors can immerse themselves in the tranquil surroundings while appreciating the importance of sustainable water resource management in the face of climate change challenges.

Dam Length

150

Dam Height

18

River Or Stream

Cattail Branch

Primary Dam Type

Earth

Surface Area

7.33

Hydraulic Height

18

Drainage Area

2.4

Nid Storage

126.02

Structural Height

18

Hazard Potential

High

Nid Height

18
       
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.