The park is named in honor of Captain William Clark, who camped near this location during the 1805–1806 Lewis and Clark Expedition.
The beach is characterized by its large, driftwood-filled shoreline typical of the Columbia River gorge environment.
The regional park encompasses over 80 acres of land, serving as a transitional zone between urban development and river wetlands.
The site features a specific boat ramp designed for non-motorized and smaller motorized watercraft access to the Columbia River.
The sandy shoreline is a dynamic landscape that changes shape depending on the current discharge levels regulated by upstream dams.
Cottonwood Beach is a riverfront park located along the Columbia River within the Captain William Clark Regional Park in Washougal, Washington. The site features a sandy beach accessible for swimming and wading, backed by a significant cottonwood forest habitat. It is situated on the historical route of the Lewis and Clark Expedition. The park grounds include a boat launch for watercraft and extensive gravel walking trails connecting to the larger regional park network. High water levels during spring runoff can occasionally submerge beach access areas. The park is managed by Clark County Public Works and maintains a focus on riparian ecosystem preservation.
The western end of the beach at sunset, framing the Washougal river bridge against the Columbia River.
Bring water shoes to navigate the rocky sections of the riverbed comfortably.
Check the Columbia River water flow reports before visiting, as high levels can significantly reduce usable beach space.
Utilize the designated paved trails to avoid damaging sensitive riparian vegetation near the water's edge.
Do not attempt to swim in the main channel of the Columbia River, as the current can be dangerously strong even for experienced swimmers.
Pack out all trash to protect the riparian wildlife; observe local signs regarding leash requirements for pets.
