Protecting and enhancing the Columbia Slough and its watershed through community engagement, education, and restoration.
Help make our watershed a better place for people, fish, and wildlife.
Engage in meaningful learning for your K-12 students with hands-on, science-based programs.
Begin your adventures with our in-depth recreation guides.
Connect with fellow nature-lovers through outdoor excursions, workshops and clean-up events.
Learn About the Watershed
The Columbia Slough Watershed is a 60-mile drainage area with 19 miles of navigable waterways that support an urban landscape of 170,000 residents, 4,200 businesses, along with river otters, painted turtles, and Bald Eagles. The watershed stretches across four municipalities and is the homeland of the Upper Chinook Native people.
