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The City of Portland, Oregon

Portland Water Bureau

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Get to Know Your Watershed at Slough 101

Activities on the Slough

Join the Columbia Slough Watershed Council on Saturday, March 14 for Slough 101, a FREE workshop about the Columbia Slough watershed and its unique story.

Event detailsSponsored by the Portland Water Bureau and the Bureau of Environmental Services, Slough 101 covers local history, water, wildlife, and current issues in the watershed. 

Explore watershed health, environmental issues, and recreation opportunities in North and Northeast Portland, Gresham, and Fairview, and participate in hands-on groundwater activities, levee and pump station tours, and macroinvertebrate (aka: stream critters) identification.

Light refreshments will be provided. The workshop is suitable for adults and teens, age 14 and older.

Pre-registration is required. Register online or call 503 281-1132.

For more information, visit the Columbia Slough Watershed Council’s Activities and Events webpage

The Columbia Slough is a 60-mile long remnant of lakes, wetlands, and slow-moving channels in the southern floodplain of the Columbia River. Today the 40,000 acre watershed contains 24,000 homes, 4,500 businesses, andis home to 1/10 of all the jobs in Oregon. The region’s back-up drinking water source, the Columbia South Shore Well Field, also lies deep below the eastern half of the watershed.

As habitats are modified throughout the Portland metropolitan region and the entire Northwest, the Slough’s importance as a component of our regional system of greenspaces grows. The Slough is one of the largest urban waterways contained wholly within the metropolitan urban growth boundary. This vast ribbon of habitat and open space can be explored by foot, bicycle or canoe and kayak.

The Slough and its watershed represent an irreplaceable resource, both for the region and for north and northeast Portland, Gresham, Fairview, Troutdale, and Wood Village. Learn more here.

Doug Wise
Groundwater Protection


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Spam Prevention In the Pacific Northwest, what state is Portland in?