Tripps Run Stream Improvement Providence District

1. Tripps Run Stream Improvement
Providence District
Project No. FX0100-CA014
FOCUS No. SD-000031-027

2. Project Details
Description:
This project consisted of stabilizing approximately 1,500 linear feet of stream channel. The work
included installation of in-stream structures (Step Pools, Cross Vane Structures, J-Vane Structures,
Riffle Habitat Structure, Plunge Pool Structure, Imbricated Stone Wall, and Stone Toe Protection), the
stabilization of stream channel bed and banks, enhancement of the riparian buffer through the planting of
native vegetation, and other related items. The completion of this project will maximize the water quality
benefits and provide downstream protection.
Project Overview:
• Constructed In-Stream Structures to stabilize the streambed and banks, reduce erosion, improve
habitat, and improve water quality.
• Replaced the failing existing concrete wall with Imbricated Stone Wall.
• Water quality benefits: Reduction of Phosphorous by 15.5 pounds per year, reduction of Nitrogen by
290 pounds per year, reduction of suspended solids by 2.35 tons per year.
• Restored native trees, shrubs, herbaceous plants, and grasses along the stream channel.
DPWES Project Team:
• Project Manager: Justin Pistore
• Construction Manager: Bill “Newt” Nolan
• Project Inspector: Michael Stevens

3. Project Location
Shreve Road, Falls Church, VA - Tax Map No. 40-3
PROJECT
LOCATION

4. Pre-existing Condition: Existing Culvert and
Plunge Pool

5. Post Construction: Stream Restoration at existing
Culvert with Step Pools and new Landscaping
STEP
POOL

6. Pre-Existing Condition: Channel going
Downstream From 2nd Existing Culvert

7. Post Construction: New Channel Work Going
Downstream From 2nd Existing Culvert
STONE TOE
PROTECTION
PLUNGE POOL
RIFFLE
HABITAT
STRUCTURE

8. Post Construction: Channel Reconstruction &
New Landscaping

9. Post Construction: Stream Restoration Work
Added Landscaping and Imbricated Stone Wall
IMBRICATED
STONE WALL

10. For additional Information, please call
Irene Haske, Public Information Officer
703-324-5821, TTY 711
SWPDmail@fairfaxcounty.gov
www.fairfaxcounty.gov/dpwes