Loading Events

« All Events

  • This event has passed.

Walking Tour of Restored Stream at Lake Fairfax, Oct 6

October 6, 2017 @ 10:00 am - 12:00 pm


The first phase of a stream restoration project located within Lake Fairfax Park in Reston, Va., was completed in late August 2017. The project restored 2,220 feet of Colvin Run, a tributary of Difficult Run, which drains into the Potomac River. This was a joint project completed by the Fairfax County Department of Public Works and Environmental Services and the Fairfax County Park Authority. The stream was restored using natural channel design and achieved the following environmental benefits:

  • Improved channel shape and flow characteristics
  • Reduced erosion using in-stream grade control structures
  • Reduction in phosphorus, nitrogen, and suspended solids
  • Reduced flooding hazards by reconnecting the stream to the floodplain.

In addition, a new culvert was placed under the main road in the park to convey a higher volume of water during storms, and the pedestrian bridge was stabilized and raised. Before and after pictures of the project may be seen here. The general contractor for the $2.2 million project was Avon Corporation of Alexandria, Va. Wetland Studies and Solutions, Inc. of Gainesville, Va., provided the design.

The Park Authority and DPWES have an extensive history of successful partnerships that result in such thriving stream restorations, such as the completed Wakefield Park Stream Restoration in Annandale. In 2016 DPWES won the Harold L. Strickland Partnership Award from the Park Authority Board for “a long list of stormwater projects it has completed in partnership with the Fairfax County Park Authority for the benefit of the community.”

A walking tour of the project site will be held on Friday, Oct. 6, starting at 10 a.m. Project team members will discuss the benefits to the park and surrounding environment. Participants will meet in the parking lot beyond the administrative building. Lake Fairfax Park is located at 1400 Lake Fairfax Drive, Reston, Va. The tour includes walking and standing on a moderately rough path through a wooded area. Attendees are requested to dress appropriately and to bring bug spray and a refillable water bottle.


October 6, 2017
10:00 am - 12:00 pm
Event Category:


Lake Fairfax Park
1400 Lake Fairfax Dr.
Reston, VA United States
+ Google Map