Luhrs Dam Reservoir Report

Last Updated: December 5, 2025

Luhrs Dam, also known as Luhrs Lake, is a private-owned structure located in Loudoun, Virginia, along the South Fork Catoctin Creek tributary.


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Summary

The dam is primarily used for irrigation purposes, with a height of 23.5 feet and a storage capacity of 125.4 acre-feet. Despite being privately owned, the dam is regulated by the Department of Conservation and Recreation in Virginia, ensuring that it meets the necessary safety and inspection standards.

The earth-type dam spans 477 feet in length and covers a surface area of 11.8 acres. While the hazard potential of the dam is currently marked as "Undetermined" and its condition is not rated, it is subject to state inspection, enforcement, and permitting requirements. As a significant part of the water resource infrastructure in the area, Luhrs Dam plays a crucial role in supporting agricultural activities through its irrigation capabilities.

Although details about the dam's construction year and modification history are not provided, its existence highlights the importance of water management and climate resilience in the region. With its strategic location and purpose, Luhrs Dam stands as a key component in the water resource system of Loudoun, Virginia, contributing to the sustainable use of water for agricultural practices in the area.

Dam Length

477

Dam Height

23.5

River Or Stream

South Fork Catoctin Creek tributary

Primary Dam Type

Earth

Surface Area

11.8

Hydraulic Height

23.5

Nid Storage

125.4

Structural Height

23.5

Hazard Potential

Undetermined

Nid Height

24
       
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.