Help us manage invasive species across the 4-county region by reporting it to the Oregon Invasive Species Hotline or Washington Invasive Species Council.
If you have questions about reporting invasive species or want to work directly with your local 4-County CWMA partner:
Clackamas County: contact the Weedwise Program.
Clark County: contact the Clark County Noxious Weed Control Board.
Multnomah County: email our Multnomah County partners.
Washington County: email Tualatin SWCD.
Once an invasive species is reported, the nearest partner organization will verify the species, determine the most effective response, and then begin treatment.
