Lewis and Clark State Recreation Site, State park in Multnomah County, Oregon, United States

Lewis and Clark State Recreation Site is a state park located where the Sandy River flows, featuring open grassy areas with trees and riverbank access. The grounds include designated swimming areas, picnic spots, and a boat launch for visitors looking to enjoy water activities.

The Lewis and Clark Expedition camped here on 3 November 1805 on its way to the Pacific, and returned in April 1806 to stay six days at the mouth of the Sandy River. In 1936 Multnomah County handed part of the land to the State of Oregon; purchases and donations through 1962 brought the park to its present size of 22 hectares.

The park is named for the Lewis and Clark Expedition, which camped here on 3 November 1805 and returned for six days in April 1806 at the Sandy River mouth. A small group went upriver but found rapids and waterfalls made it impassable, and quicksand at their landing led them to call it Quicksand River, later shortened to Sandy River.

The site is open for day use only and entry is free. A ramp gives boat access to the Sandy River, and a path leads up Broughton's Bluff, where trails allow rock climbing. Picnic benches and restrooms sit on a tree-shaded lawn along the Historic Columbia River Highway.

Broughton's Bluff, a 160-foot rock wall, marks the geological boundary between the Cascade Mountains and the Willamette Valley. Climbers use this natural formation year-round, making it a notable feature of the park.