Crosspointe Lake Dam Reservoir Report

Last Updated: December 5, 2025

Crosspointe Lake Dam, located in Fairfax, Virginia, serves as a critical infrastructure for flood risk reduction along Giles Run.


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Summary

This private earth dam stands at a height of 20 feet, with a storage capacity of 88 acre-feet and a surface area of 8.4 acres. The dam, with a length of 440 feet, plays a vital role in maintaining the ecological balance by serving as a fish and wildlife pond while also mitigating the risk of flooding in the region.

Managed by the Department of Conservation and Recreation in Virginia, Crosspointe Lake Dam is regulated, inspected, and enforced upon by the state authorities to ensure its structural integrity and adherence to safety standards. While the dam's hazard potential is classified as high, its condition assessment remains unrated, suggesting a need for further evaluation and risk management measures. Despite lacking specific completion and assessment dates, the dam continues to fulfill its primary purpose of flood risk reduction, safeguarding the surrounding communities in Fairfax County.

As water resource and climate enthusiasts monitor the developments around Crosspointe Lake Dam, the oversight provided by the state regulatory agency and the enforcement of inspection protocols underscore a commitment to maintaining the dam's functionality and safety. With its strategic location and essential role in flood control and ecological preservation, the dam stands as a testament to effective water resource management in the region, ensuring the sustainability of water infrastructure for future generations.

Dam Length

440

Dam Height

20

River Or Stream

Giles Run

Primary Dam Type

Earth

Surface Area

8.4

Hydraulic Height

20

Nid Storage

88

Structural Height

20

Hazard Potential

High

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.