Thomas Branch Dam Reservoir Report

Last Updated: December 5, 2025

Thomas Branch Dam, located in Westmoreland, Virginia, is a privately owned structure regulated by the Department of Conservation and Recreation.


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Summary

Standing at a height of 23 feet with a length of 391 feet, this earth-type dam serves primarily for recreational purposes, providing a storage capacity of 199 acre-feet. Despite being categorized as having an undetermined hazard potential and not rated in terms of condition assessment, the dam is subject to regular inspections and state jurisdiction, ensuring its safety and compliance with regulations.

While the dam's construction year remains unknown, its location within the Norfolk District of Virginia offers water resource and climate enthusiasts an opportunity to explore and appreciate the vital role of dams in managing water resources and providing recreational opportunities. With its proximity to the Thomas Branch, this dam contributes to the local ecosystem and serves as a focal point for outdoor activities. Although details regarding its emergency action plan and risk management measures are currently unavailable, the presence of this structure highlights the importance of maintaining and monitoring dams for sustainable water management in the region.

As enthusiasts delve into the intricacies of water resource management and climate resilience, Thomas Branch Dam stands as a notable example of private ownership and state regulation in maintaining water infrastructure. With its unassessed condition and undetermined hazard potential, there is a need for continued monitoring and assessment to ensure the safety and functionality of this essential structure. As climate change impacts water resources, understanding the role of dams like Thomas Branch in providing water storage and recreational opportunities becomes increasingly crucial for sustainable water management and environmental conservation efforts in Westmoreland, Virginia.

Dam Length

391

Dam Height

23

Primary Dam Type

Earth

Hydraulic Height

23

Nid Storage

199

Structural Height

23

Hazard Potential

Undetermined

Nid Height

23
       
Seasonal Comparison

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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.