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4 County Cooperative Weed Management Area
Affiliated Counties or Partnership
Clackamas, Clark (WA), Multnomah, Washington 
 4 County CWMA
Lauren Brown, Lead Contact
Phone: 503-410-6572
Email:  info@4countycwma.org
The following questions were answered by cooperators as part of an Oregon CWMA survey project in 2009.
CWMA Mission
The Clackamas, Clark, Multnomah, Washington (CCMW) CWMA exists to create and support collaborative weed management among land managers and owners within these four counties.
List the Cooperators involved in your CWMA.

Lower Columbia River Estuary Partnership; Tualatin Soil and Water Conservation District; East Multnomah Soil and Water Conservation District; West Multnomah Soil and Water Conservation District; Clackamas Soil and Water Conservation District; Clark County Weed Management; Port of Portland; Johnson Creek Watershed Council; Tualatin River Watershed Council; Tualatin Hills Park and Recreation District; The Nature Conservancy; City of Portland Parks and Recreation; Oregon Department of Transportation; Oregon Department of Parks and Recreation; Oregon Department of Agriculture; Bureau of Land Management, Salem District; Northwest Oregon Resource Conservation and Development, Inc.; Portland Bureau of Environmental Services; Mt. Hood National Forest; Metro Parks and Greenspaces; Cascade Pacific Resource Conservation and Development, Inc.; Three Rivers Land Conservancy; The Wetlands Conservancy; Oregon Department of Fish and Wildlife; Noah's Nibblers, LLC; Oregon Department of Forestry.
What makes the structure of your CWMA successful?
Multiple agencies freely sharing information for a common good. Ability to work with one another as needed.
What is the highest priority species in your area?
Garlic mustard, knotweed, false brome 
Describe your most valuable outreach/education tool.
A combination of brochures, workshops/tours, demonstration plots, and one on one outreach.
What are some of your most successful on the ground accomplishments?
Many, ranging from citizen based ivy removal projects, to multi-county knotweed and garlic mustard projects. We are embracing early detection rapid response (EDRR) in order to train individuals to spot potential invasives.
List your highest priority on the ground projects and why they are high priority.
Containment and control of species such as spurge laurel, garlic mustard and ED/RR species arising from within the Portland metropolitan area, decreasing the abundance of more common invasive species impacting ecological health at the urban/natural area interface, and creating an informed and supportive citizenry through publications, outreach events, and trainings.
What would you say is your CWMA's largest obstacle in the way of achieving your mission?
Lack of long term predictable funding prevents effective planning.
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