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Project description

Mid Fork Snoqualmie Valley - contact Mark Boyer for permission to use photo

Plant enthusiasts, hikers and others who want to help protect our natural areas are encouraged to join the effort to locate (and control) invasive species in the beautiful Middle Fork Snoqualmie Valley and the Snoqualmie Pass Gateway trails of the South Fork Snoqualmie. The Upper Snoqualmie invasive weed project trains volunteers to survey along the beautiful trails of the Middle Fork Snoqualmie Valley and in the upper South Fork Snoqualmie watershed. Help survey the area's spectacular trail system for invasive weeds so we can stop them before they get entrenched. We are surveying trails from Mt. Si near North Bend to Dutch Miller Gap in the heart of the Alpine Lakes Wilderness.

2017 training schedule

  • Saturday, June 3, 9 am - 3 pm, North Bend Ranger Station, Conference Hall (behind Ranger Station), 902 SE North Bend Way, North Bend 98045
  • Friday, June 23, 9 am - 3 pm, Center for Urban Horticulture, Douglas Research Conservatory, 3501 NE 41st St., Seattle 98105

The agenda will be the same for both sessions. In the morning there will be a classroom-based workshop covering the program's goals and methods and focusing on learning to identify the priority invasive plants for the region, using a combination of slides and plant specimens. In the afternoon, there will be a field-based activity to get further practice identifying plants and to get familiar with recording data on both the paper and online forms. This is a joint training for King County's Trail Weed Watchers and the PNW‐IPC Citizen Science EDRR program.

To sign up or for more information, contact Sasha Shaw,

Project resources
2009 Map of Invasive Plant and Noxious Weed Surveys in the South and Middle Fork Snoqualmie River Basins - click for larger image

Note: You will need Acrobat Viewer to read most of these files. Download times are based on a 56K modem.

Training video (2013)


Weed Identification




Project Contacts

    Mark Boyar, Volunteer, Mountains to Sound Greenway Trust, 206-760-9041,

    Sasha Shaw, Education Specialist, King County Noxious Weed Control Program, 206-477-4824,

    Jonathane Schmitt, Invasive Plant Coordinator, Mt. Baker Snoqualmie National Forest,

    Katie Woolsey, Natural Areas and State Lands Steward, South Puget Sound Region, Snoqualmie Corridor,  Washington State Department of Natural Resources (DNR), (206) 375-3558,

    Lisa Nelson, Mountains to Sound Greenway Trust, (206) 373-1598,


For more information, email Mark Boyar or Sasha Shaw. To find out about weed removal work parties in the Middle Fork, contact Katie Woolsey with Washington Department of Natural Resources or the Mountains to Sound Greenway Trust.

Related information

Related agencies

Program offices are located at 201 S. Jackson St., Suite 600, Seattle, WA 98104. To contact staff, see the Noxious Weed Control Program Directory, send an email, or call 206-477-WEED (206-477-9333).