Mid-spencer Island Restoration

Efforts

Efforts describe the work of workgroups

Involved Workgroups:

• Knowledge Creation
  • Adaptive Management
  • Arts and Crafts
  • Lessons
  • Monitoring
  • Research
• Protection
  • Acquisition
  • Green Infrastructure
  • Regulation
• Restoration
  • Beach Nourishment
  • Engineered Log Jams
  • Fish Passage
  • Revegetation
• Social Change
  • Advocacy
  • Coordination
  • Education
  • Funding
  • Integrated Ecosystem Management
  • Legislation
  • Planning

Effort References

• RCO's PRISM Project Search
• Salmon Recovery Portal
• Ecology's Administration of Grants and Loans
• USACE Regulatory In-lieu Fee and Bank information Tracking System

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The dikes of Mid-spencer island breached (in the 1960's), resulting in restoration of tidal flow but poor connectivity. Snohomish County is developing designs to remove additional dikes to support more complex channel formation, and improve fish access. Work will be completed as part of the Smith Island Restoration

• File:Snohomish County 2020 smith and mid-spencer monitoring year 0-1.pdf

Notes

• Unclear how construction will be phased in relation to the two-year Smith Island work.
• Two contracts observed in PRISM:
  • ESRP Design Contract (2014)
  • Restoration Contract (2016)
  • Construction was incorporated into Smith Island Restoration contracting: https://secure.rco.wa.gov/prism/search/projectsnapshot.aspx?ProjectNumber=16-2152
• Key Documents in PRISM
  • Conceptual Design
  • File:Baek et al 2015 mid-spencer 60% design.pdf
  • Final Design Report
  • As Built Memo
• NWFSC has completed some initial monitoring of fish composition and density within the island, however the connections between high tidal channels through historical mother ditches make strong sampling methods like fyke netting difficult.