The site was historically known as Cottonwood Beach, named for the vast groves of black cottonwood trees lining the shore.
The location serves as the starting point for the 7-mile Columbia River Renaissance Trail connecting to Marine Park.
It is situated within the Sandy River Delta confluence area, a critical habitat for migratory birds.
The park was developed as part of an effort to revitalize former industrial riverfront land into public recreational space.
The area is prone to seasonal flooding, which periodically submerges lower-lying sections of the beach and trails.
Captain William Clark Park, formerly known as Cottonwood Beach, is a riverfront recreational site located on the north bank of the Columbia River. The park marks the site where the Lewis and Clark Expedition camped in April 1806. The 80-acre site features expansive sandy beaches and paved pathways suitable for walking and cycling. The park serves as a primary access point for the Columbia River Renaissance Trail. It incorporates natural floodplains and restoration areas dedicated to riparian habitat. Visitors can view the Columbia River Gorge and nearby river islands from the shoreline. The park is managed by Clark County Public Works as part of a larger regional trail system. It offers direct boat ramp access for non-motorized and motorized watercraft depending on water levels.
The western end of the beach at sunset, framing the Columbia River with Mount Hood visible in the distance.
Bring polarized sunglasses to reduce the glare from the expansive Columbia River surface.
Check local river flow reports if you plan to launch a kayak or paddleboard, as currents can be strong.
Use bug spray during the summer months, as the riverfront environment attracts mosquitoes.
Attempting to swim in the main channel of the Columbia River, which contains dangerous undertows and hidden debris.
The park may experience temporary access restrictions during periods of high water or spring runoff.
Leash your dogs at all times and practice leave-no-trace principles to protect the sensitive riverbank restoration zones.
