Hikes›United States›Oregon›Big Four Corners Natural Area›Columbia Slough TrailColumbia Slough TrailDay hike · 3.1 km · ↑ 0 mIn Big Four Corners Natural Area, OregonTrip reports and guidesCity teams up with ODOT to pave new section of Columbia Slough Trail - UPDATEDbikeportland.org · Oct 2013 · trip report