Active Cooperative Weed Management Areas

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Click on the map numbers below to view 2008 CWMA surveys.

1. Asotin Cooperative Weed Management Area
2. Biological Control Program (statewide)
3. Cedar River Cooperative Weed Management Area
4. Channeled Scablands
5. Chehalis River Watershed Aquatic Management Group
6. Columbia Gorge Cooperative Weed Management Area
7. Crupina Task Force
8. Ebey's Landing
9. Four County/Clackamas Cooperative Weed Management Area
10. Green/Duwamish Watershed Cooperative Weed Management Area
11. Highway 12/State Road 410 Cooperative Weed Management Area
12. Lake Roosevelt Cooperative Weed Management Area
13. Nisqually River Cooperative Weed Management Area
14. Nooksack Basin Knotweed Working Group
15. Okanogan County Cooperative Weed Management Area
16. Olympic Knotweed Working Group
17. Phragmites Task Force (statewide)
18. Purple Loosestrife Task Force (statewide)
19. Saltcedar Task Group (statewide)
20. Selkirk Cooperative Weed Management Area
21. Skagit Cooperative Weed Management Area
22. Skykomish River (south-fork) Cooperative Weed Management Area
23. Snoqualmie River (mid-fork) Cooperative Weed Management Area
24. Southeast Washington Cooperative Weed Management Area
25. Stillaquamish Watershed Cooperative Weed Management Area
26. Tri-State Cooperative Weed Management Area (Washington, Oregon, Idaho)
27. Weeds Across Borders (Washington, British Columbia)
28. Yakima River Task Group

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