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Glendale Creek Restoration Project - Enhancing Fish Habitat and Passage

The Glendale Creek Restoration Project aims to ensure long-term stability of road and stream, manage excessive gravel and debris, and provide essential habitat and fish passage for sustainable aquatic ecosystems. Efforts focus on middle and lower reach areas to address challenges like channel down-cutting, unstable soils, and degraded habitat. Methods include stabilizing stream banks, adding large wood elements, and enhancing fish passage through various structures. With a targeted completion in 2010, the project involves design, permitting, construction bidding, and phased implementation to restore and protect Glendale Creek's valuable ecosystem.

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Glendale Creek Restoration Project - Enhancing Fish Habitat and Passage

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  1. Glendale Creek Restoration

  2. Restoration Goals • Ensure long-term stability of road and stream • Manage excess gravel and debris • Provide habitat/fish passage

  3. Fish Needs • Food (Rearing) • Shelter (Rearing / Refuge) • Ability to Reproduce (Spawning) • Access (Passage)

  4. Habitat = Hydraulic Diversity • Fast/slow • Deep/shallow

  5. Habitat Varies • Species • Life stage

  6. Middle Reach Lower Reach Fish Passage, Spawning Habitat Glendale Creek Project Areas Road Washout Fish Passage

  7. Road Washout Focus: Passage • Island County (2009) • Stabilize Stream Banks • Remove Road Fill • Add Habitat Elements

  8. Middle Reach Focus: Habitat • Tulalip Tribe (2010) • Add Large Wood • Stabilize Stream

  9. Lower Reach Focus: Channel and Slope Stability Fish Passage/Spawning

  10. Challenges in the Lower Reach Channel Down-Cutting Narrow Channel Segments Undercut Road Prism Unstable Soils

  11. … More Challenges 6% Average Grade Degraded Instream Habitat Excessive Incoming Sediment (originating in Middle Reach)

  12. Bank Stabilization Upper Culvert Stabilize / Replant (100 ft) (locations to be finalized) Glendale Road Road Edge Stabilization (350 ft)

  13. Bank Stabilization Spiralnail Spider Slope System

  14. Road Edge Stabilization Welded Wire Structural Earth System

  15. Road Edge Stabilization Welded Wire Structural Earth System - Installed

  16. Fish Usage Upper Culvert Wider and flatter (380 ft) Glendale Road • Rearing / Refuge • Spawning • Passage Steeper and narrower (420 ft)

  17. Wood Structures For fish passage For fish habitat

  18. Rock Structures

  19. First Steps…

  20. Next Steps • Design in process • Target completion in 2010 • Permits • Construction bidding and contracts • Funding • Possible phased approach

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