Glendale Creek Restoration
Restoration Goals Ensure long-term stability of road and stream Manage excess gravel and debris Provide habitat/fish passage
Fish Needs Food (Rearing) Shelter (Rearing / Refuge) Ability to Reproduce (Spawning) Access (Passage)
Habitat = Hydraulic Diversity Fast/slow Deep/shallow
Habitat Varies Species Life stage
Glendale Creek Project Areas Road Washout Fish Passage Lower Reach Fish Passage, Spawning Middle Reach Habitat
Road Washout Island County (2009) Stabilize Stream Banks Remove Road Fill Add Habitat Elements Focus: Passage
Middle Reach Tulalip Tribe (2010) Add Large Wood Stabilize Stream Focus: Habitat
Lower Reach Focus: Channel and Slope Stability Fish Passage/Spawning
Challenges in the Lower Reach Undercut Road Prism Unstable Soils Channel Down-Cutting Narrow Channel Segments
… More Challenges 6% Average Grade Degraded Instream Habitat Excessive Incoming Sediment (originating in Middle Reach)
Bank Stabilization Glendale Road Stabilize / Replant (100 ft) (locations to be finalized) Road Edge Stabilization (350 ft) Upper Culvert
Bank Stabilization Spiralnail Spider Slope System
Road Edge Stabilization Welded Wire Structural Earth System
Road Edge Stabilization Welded Wire Structural Earth System - Installed
Fish Usage Steeper and narrower (420 ft) Wider and flatter (380 ft) Upper Culvert Glendale Road Rearing / Refuge Spawning Passage
Wood Structures For fish passageFor fish habitat
Rock Structures
First Steps…
Next Steps Design in process Target completion in 2010 Permits Construction bidding and contracts Funding Possible phased approach