Public Works and Environmental Services Alert:
This project was identified in the Difficult Run Watershed Management Plan for stream restoration and stabilization activities. It was placed in the county's Fiscal Year 2019 work plan as a result of severe erosion and maintenance issues related to a downstream stormwater management basin.
The project will restore about 2,000 linear feet of natural stream channel, replace the culvert under Ashgrove Lane and repair the trail. The stream channel exhibits severely eroded and over-widened banks, and the potential for further bed and bank instability. This project is part of larger efforts to restore many of Fairfax County’s degraded streams while improving overall water quality and the condition of the Chesapeake Bay.
The primary goals of the restoration are:
The project is located on public land and within stormwater easements south of the Dulles Access Road, extending downstream through Old Courthouse Spring Branch Stream Valley Park to Ashgrove Lane.
View the downloadable map. The project area is shown in blue.
Construction began in the Winter of 2024. Completion of construction activities is scheduled for Winter of 2025/2026. Landscaping activities are scheduled for completion in the Spring of 2026.