Annual Great Slough Clean-Up

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Annual Great Slough Clean-Up

July 20 @ 9:00 am - 1:00 pm PDT

Join the Columbia Slough Watershed Council and the Multnomah County Drainage District for the 12th annual trash-hauling extravaganza!  Borrow a boat, bring your own, or sort out trash on land.  With your help, the Slough gets cleaner each year!


Clearing garbage and debris from the Slough helps to keep water moving through our conveyance systems. This helps to reduce flood-risk for critical habitat, adjacent communities, and visitors. Interested participants will have the opportunity to tour a section of our 27-mile levee system that helps protect people, property and the environment from flooding along the Lower Columbia River.


Boats, gloves, tools, and Slough mud provided. For this event we welcome volunteers age 14 and up. 


3 Locations

Portland Water Bureau Launch
16650 NE Airport Way
Portland, Oregon 97230

Multomah County Drainage District
1880 Ne Elrod Dr.
Portland, Oregon 97211

5432 NE 112th Ave.
Portland, OR 97220


July 20
9:00 am - 1:00 pm


Columbia Slough Watershed Council, Stewardship Program


MCDD Office
1880 NE Elrod Dr
Portland, OR 97211
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TRAFFIC ALERT: Expect delays at the intersection of NE Marine Drive and NE 122nd Ave Sep 30 - Oct 30, 2019. Click here for more information.