Project Background

The proposed flood mitigation project is in the Cameron Run watershed within the Chowan Avenue neighborhood.  Larger storm events in recent years have overwhelmed the conveyance system, resulting in recurring roadway overtopping at the 8th Street and Chowan Avenue culverts and structural flooding at multiple residences in the neighborhood. This project was initiated by the County to address these challenges. 

Project Description

This project will utilize hydrologic and hydraulic modeling to simulate and analyze a variety of flood mitigation approaches in order to determine the best solution for the neighborhood’s flooding challenges. The county seeks to implement a solution that will reduce risk of structural flooding by increasing capacity in the stormwater conveyance system and overland relief paths. The project will also include stabilization of the natural channel between Cherokee Avenue and Chowan Avenue, preventing streambank erosion and improving water quality. 

The primary goals of the project include:

• Reduce localized flooding and erosion
• Address public safety concerns
• Improve the stormwater conveyance system
• Improve water quality and protect the local stream
• Use an innovative, sustainable and functional design

Project Location

The project is located in the Chowan Avenue neighborhood in the vicinity of Cherokee Avenue, 8th Street, and Chowan Avenue in Lincolnia. The project drainage area consists of approximately 246 acres that drain to Turkeycock Run.   

Project Phase

The project is currently in the pre-design phase. 

Timeline

Flood mitigation modeling and analysis are complete. The project will advance to the design phase pending land rights and easement acquisition needed to implement the proposed solution.  

What to Expect

In the coming months, the County will be soliciting feedback on the proposed solution.  

Presentations to the Community

The Chowan Avenue Stormwater Improvement Project is in design. We have prepared a video presentation to provide a project update on the history of flooding and the recommended solution. The video has been translated into several different languages spoken in this community based on a Fairfax County Public School language survey. Additionally, a solutions summary can be found below the videos and the technical report can be provided upon request. We look forward to your feedback.

Project Cost and Funding Source

Design and construction of the Chowan Avenue Stormwater Improvement Project is estimated to cost approximately $4.2 million. Funding for construction is dependent upon future budget availability and allocations. Stormwater projects are funded through the county Stormwater Service District.

Other Information

• Chowan Avenue Solutions Summary PDF

If you would like to review a copy of the “Chowan Ave. Y4-TO#09 Additional Modeling Technical Memorandum 2025-05-09 (Revised 2025-06-16)” please reach out to us for a copy.

Contact

For more information please email Project Manager Paul Reynolds, Stormwater Planning Division, Department of Public Works and Environmental Services, or call 703-877-2862, TTY 711.