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Pohick Creek Tributary Stream Restoration Project
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Pohick Creek Tributary Stream Restoration Project

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Pohick Creek Tributary Stream Restoration Project

Pohick Creek Tributary Stream Restoration Project

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  • 1. A Fairfax County, VA, publication Department of Public Works and Environmental Services Working for You! Pohick Creek Tributary Stream Restoration CN13125083 SD-000031-114 Braddock District June 5, 2014
  • 2. Pohick Creek Tributary Stream Restoration Utilities Design & Construction Division- Transportation and Stormwater Construction Branch
  • 3. Project Details Pohick Creek Tributary Stream Restoration Utilities Design & Construction Division- Transportation and Stormwater Construction Branch Description: The Pohick Creek Tributary project was substantially completed on May 22, 2014. The project consisted of restoring approximately 1,314 linear feet of highly degraded tributary of Pohick Creek using natural channel design techniques. Project Overview: • Establishment of new and stable channel geometry • Reconnection of the channel with its floodplain by raising the stream bed • Placement of a reinforced bed to prevent future incision • Stabilization of the stream bed and banks, reduction of erosion, and improvement of habitats through the installation of various in-stream structures to include: Log Sills, Rock Sills, Boulder Riffles, Rock Step Pools, Modified Cross-Vanes • Maintenance of existing stormwater management pond (clean & repair) • Restoration of the site with native trees, herbaceous plants, and grasses to promote natural reforestation. • Reduction of 1,736 lbs. of total nitrogen per year, 129 lbs. of total phosphorus per year, and 123 tons of sediment per year leading to the Pohick Creek. Project Team: • Stormwater Planning Division – Sajan Pokharel • Utilities Design and Construction Division – Yudhie Brownson, Jeffrey Bartlett, Mannan Qureshi • Urban Forestry Management Division – Hugh Whitehead • Avon Corporation – Kurt Lorenz, Mike Avon • Wetland Studies and Solutions, Inc. – John Connelly, Nathan Staley, Brian Chromey
  • 4. Pohick Creek Tributary Stream Restoration Utilities Design & Construction Division- Transportation and Stormwater Construction Branch Guinea Road & Harford Lane (Burke, VA) – Tax Map No. 69-4 Project Site
  • 5. Pohick Creek Tributary Stream Restoration Utilities Design & Construction Division- Transportation and Stormwater Construction Branch Existing Condition - Stream Very steep, highly eroded stream banks
  • 6. Pohick Creek Tributary Stream Restoration Utilities Design & Construction Division- Transportation and Stormwater Construction Branch Existing Condition – Stream Head cut in the stream channel
  • 7. Pohick Creek Tributary Stream Restoration Utilities Design & Construction Division- Transportation and Stormwater Construction Branch Construction – Stream Grade control rock structure Reinforced bed material Excavated existing channel
  • 8. Pohick Creek Tributary Stream Restoration Utilities Design & Construction Division- Transportation and Stormwater Construction Branch Construction – Pond Accumulated pond debris and silt were removed
  • 9. Pohick Creek Tributary Stream Restoration Utilities Design & Construction Division- Transportation and Stormwater Construction Branch Completed – Stream
  • 10. Pohick Creek Tributary Stream Restoration Utilities Design & Construction Division- Transportation and Stormwater Construction Branch Completed – Stream
  • 11. Pohick Creek Tributary Stream Restoration Utilities Design & Construction Division- Transportation and Stormwater Construction Branch Completed – Pond
  • 12. Before After Pohick Creek Tributary Stream Restoration Utilities Design & Construction Division- Transportation and Stormwater Construction Branch
  • 13. Additional Information For additional Information, please call www.fairfaxcounty.gov/dpwes Pohick Creek Tributary Stream Restoration Utilities Design & Construction Division- Transportation and Stormwater Construction Branch Irene Haske, Public Information Officer 703-324-5821, TTY 711 SWPDmail@fairfaxcounty.gov

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