Public Works and Environmental Services

CONTACT INFORMATION: Our administrative offices are open 8 a.m. – 4:30 p.m., Mon - Fri
703-324-5500 TTY 711
12000 Government Center Parkway
Suite 449, Fairfax, Va 22035
Craig Carinci
Director, Stormwater Planning

Tripps Run at Barrett Road Flood Mitigation Study

Project Number: SD-000032-069

Project Update: September 5, 2023

The design of the selected scenario from the Tripps Run at Barrett Road Flood Mitigation Study began in summer 2023.

The Final Report can be found here: Final Report | Appendix A | Appendix B | Appendix C | Appendix D

Project Background

This study involves the investigation of potential flood mitigation measures in an area of historic flooding along Tripps Run near Barrett Road.

Project Description and Location

The study assessed and evaluated four flood mitigation project scenarios. These scenarios included grading and stream enhancements within county properties and easements as well as acquiring properties for additional grading opportunities.

The overall study area is located along Tripps Run between Annandale Road and Sleepy Hollow Road in the Bel Air neighborhood. Limits of the potential projects varied with the longest project starting just downstream of Annandale Road and extending to 1,000 feet downstream of Holloway Road.

Map - Tripps Run at Barrett Road Flood Mitigation project
The project area is shown in the red outline.


Depending on the scenario, the following benefits may be realized:

  • Reduction in property flooding
  • Reduction in residential structure flooding
  • Creation of an environmental corridor with a passive recreational area for the community
  • Improved floodplain connectivity
  • Stream stability, flow diversity and possibly water quality improvements


The design of the project began in summer 2023.

Project Cost and Funding Source

Funding through the Department of Conservation and Recreation (DCR) Community Flood Preparedness Fund (CFPF) in the amount of $8,985,200 has been awarded. A Grant Agreement from the Virginia Resources Authority (VRA) was authorized in April 2023 for the design and construction of the Tripps Run at Barrett Road Flood Mitigation Project.


For more information, please email Joni Calmbacher, Stormwater Planning Division, Department of Public Works and Environmental Services, or call 703-324-2183, TTY 711.

Fairfax Virtual Assistant