Tripps Run Stream Improvement

Providence District

Project No. FX0100-CA014

FOCUS No. SD-000031-027

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

Project Location

Shreve Road, Falls Church, VA - Tax Map No. 40-3

PROJECT

LOCATION

Pre-existing Condition: Existing Culvert and

Plunge Pool

Post Construction: Stream Restoration at existing

Culvert with Step Pools and new Landscaping

STEP

POOL

Pre-Existing Condition: Channel going

Downstream From 2nd

Existing Culvert

Post Construction: New Channel Work Going

Downstream From 2nd

Existing Culvert

STONE TOE

PROTECTION

PLUNGE POOL

RIFFLE

HABITAT

STRUCTURE

Post Construction: Channel Reconstruction &

New Landscaping

Post Construction: Stream Restoration Work

Added Landscaping and Imbricated Stone Wall

IMBRICATED

STONE WALL

For additional Information, please call

Irene Haske, Public Information Officer

703-324-5821, TTY 711

SWPDmail@fairfaxcounty.gov

www.fairfaxcounty.gov/dpwes