Sacajawea State Park is a 284-acre inland waters, day-use park at the confluence of the Snake and Columbia rivers. It features 9,100 feet of freshwater shoreline. The area is spread out with a big sky and excellent views of the two rivers as they flow together. The property was deeded to Washington State Parks in 1931. The park is named for Sacajawea, a Shoshone Indian woman who traveled with the Lewis and Clark expedition. The park is located on one of the expedition’s campsites, used by Lewis and Clark from October 16 to 18, 1805.