While you need a permit to reach much of the waterfall corridor in Oregon and Washington, some trails don't take so much planning.
9 Columbia River Gorge Waterfalls
Don't Miss the Triple Falls Trail in the Columbia River Gorge
Latourell Falls — Washington Trails Association
Columbia River Gorge: Top Hikes, Waterfalls, and More — The Grah Life
Columbia River Gorge National Scenic Area - All You Need to Know
New Timed Permits Required in Columbia Gorge's Waterfall Corridor
New Permit System Implemented for the Historic Columbia River Highway
New Timed Permits Required in Columbia Gorge's Waterfall Corridor
These Columbia River Gorge Waterfall Hikes Don't Require a Timed
Tunnel Falls via Eagle Creek: Everything You Need to Know About
A Day Trip to the Columbia River Gorge and Waterfall Alley.
Timed-Access Permits Will be Required for Drivers Heading to the
Columbia River Gorge: Top Hikes, Waterfalls, and More — The Grah
Columbia River Gorge Elopement Guide