Knappton

The Knappton boat ramp offers year-round access to the Columbia River via a rough, unimproved gravel launch located directly off Washington State Route 401 near milepost 4.0. This historic site sits on the grounds of a former cannery, now listed on the Washington State Historical Register. The ramp provides a straightforward entry point for kayakers, canoeists, and motorboats looking to explore this section of the lower Columbia River.

Be prepared for significant tidal influence in this area—plan your paddling around tide schedules for safer conditions. The launch is basic in amenities, with restroom facilities available and a trailer parking area nearby. Given the Columbia River's size and current, paddlers should be cautious of debris, pilings, and other hazards. Recent improvements to the launch site and surrounding infrastructure have been completed to enhance access and drainage.

The site's proximity to the Lewis and Clark National Historical Park and Lewis and Clark National Wildlife Refuge makes it an excellent starting point for exploring the lower Columbia's islands, wildlife viewing, and historic sites. Always exercise caution on the river and be courteous to other users sharing the water.