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Monitoring Riparian Restoration Sites in Snohomish County

Native Plant Project Steward Team

Native Plant Project Steward Team Lin Kyan, Mary Monfort, Greg Dunster.

Native Plant Steward Project Team

Greg Dunster, Lin Kyan, Mary Monfort

This project is designed to continue native vegetation monitoring of six riparian restoration sites established by Snohomish County's Surface Water Management Division. All of these sites affect salmon spawning habitats and water quality, so assessing their health and recovery are important.

Annual assessment and measurements of the restored native habitats is important to analyze growth patterns, develop response to accruing problems, and make predictions for existing and future habitat restoration sites. The collected monitoring data will be added into an existing Snohomish County monitoring database.

Listed below are the individual sites to be visited:

  1. Alpine Rockeries – 2004, Little Bear Creek Watershed
    • Located along Little Bear Creek 
    • Area was raked, mowed and sprayed with glyphosate for two years to kill reed canarygrass
    • One-foot thick tub grind chips laid down
    • Jute fabric was placed over chips and staked with thousands of willow cuttings 
  2. Bob Heirman Park - 2004, Snohomish Watershed
    • Located along the Snohomish River
    • 500 large trees (5-6+ feet tall) planted using tree spade
    • Larger cottonwood posts buried in floodplain to see if they would survive and slow flood water down and filter out debris
  3. Duanes Creek/Trib 80 – 1997, Stillaguamish Watershed
    • Located on Duanes Creek near Granite Falls
    • Restoration included removing invasives and replanting with native plant species
    • Snohomish Conservation District and Stillaguamish Tribe assisted
    • Installed fish-friendly culvert under the Millennium Trail
    • Placed large woody debris weirs in stream
  4. Tatum – 1998, Stillaguamish River
    • Located along Glade Bekken (originally Tributary 13)
    • Restored with approximately 150 native plants
    • Fenced when planted to keep cattle out of area
  5. Twin Creeks - 2003, North Creek Watershed
    • Located on North Creek near Mill Creek
    • Restoration included removing invasives and replanting with native plant species
    • Large woody debris placed in stream to help reduce flooding
    • Planted with native species from 2003 to 2008
    • Teaching site about native plants and salmon habitat - Salmon and Plants for kids
  6. Wright – 1998, Stillaguamish Watershed
    • Located along Glade Bekken (originally Tributary 13)
    • Restoration included replanting with native plant species
    • Fenced when planted to keep cattle out of area

Project Goals

  • Monitor six established riparian restoration sites for vegetation cover
  • Seek landowner permission to enter areas
  • Retrieve site maps, historical information and previous monitoring data
  • Use monitoring protocol to monitor each site
  • Take reference photos or prepare reference drawings of each site; establish reference points if none exist
  • Enter data into Snohomish County Surface Water Management database

Accomplishments

  • Two sites monitored as of December 2008 (Bob Heirman Park, Twin Creeks)
  • Data entered into County computer system




Updated: March 5, 2015
Copyright 2000-2017 Washington Native Plant Society. All rights reserved.

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