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
Joni Calmbacher
Director, Stormwater Planning

Difficult Run Tributaries and Basins Restoration at Government Center

Project Update: May 8, 2024

KBS Earthworks, Inc. (KBS) is currently working on setting up Erosion and Sediment Control measures within Phase 4 of the project site. This area can be found at the southern portion of the Government Center property, near the intersection of Government Center Parkway and Forum Drive.

Based on the monthly schedule, KBS will be within this Phase from approximately May 2024 until October 2024, weather and crew availability dependent. The trails located within these areas will be closed until the work is complete. KBS has finished in-stream work within Phases 2/3 and will be working to open the trails within these areas.

See the map: Difficult Run Tributary at GC Stream and Pond Restoration Pedestrian Path Closure Signage

Project Background

Government Center Basin

This project was identified for stream restoration and basin enhancement as part of the overall effort to improve water quality on the Government Center campus. Staffs of the Stormwater Planning Division initiated the design of the project in July 2019.

Project Description

The Difficult Run Tributary and Basins at Government Center project will consist of approximately 1,600 linear feet of stream restoration using Natural Channel Design (NCD) standards and dredging of two amenity ponds to improve stream health and water quality adjacent to the Fairfax County Government Center. The work includes the following: grading, excavation, fill, stream alignment, in-stream and log structure, and riparian corridor enhancement, native species landscaping, and trail rehabilitation.

Project Location

The project is located north of the Government Center, bounded on the upstream by Government Center Parkway and downstream by Monument Drive. The project is in the Braddock Magisterial District.

Proposed construction entrance at existing pond, Proposed construction entrance at government center parkway, limits of disturbance, trails, trail closures, proposed pond improvements

Difficult Run Tributaries and Basins Restoration Story Map

Learn all about the stream restoration and pond dredging project, located near the Fairfax County Government Center building. The Story Map includes engaging interactive features such as the Existing Conditions Map Tour and the Proposed Habitat & Vegetation Zones.

Project Benefits

  • Improvement of water quality through the removal of Nitrogen, Phosphorous and Total Suspended Solids.

Project Timeline

The project is expected to begin construction in summer 2023 and will conclude fall 2024.

What to Expect

Construction work will include truck traffic entering the site through the Government Center parking lot, and at the southern trail head located off of the Government Center Parkway. The typical work week is Monday through Friday, starting after 7 a.m. Note that at some periods during construction, work may occur on weekends. Deliveries on those days will occur after 9 a.m.

Project Cost and Funding Source

Stormwater projects are funded through the county Stormwater Service District.


For more information please email Project Manager Kenneth Trinh, Stormwater Planning Division, Department of Public Works and Environmental Services, or call 703-324-1016, TTY 711.

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