We're excited to have you visit our city and enjoy the north central region of the great state of Idaho. Lewiston is located at the confluence of the Snake and Clearwater rivers. Immediately west of Lewiston is the smaller twin city of Clarkston, Washington. The north-flowing Snake River departs Hells Canyon and forms the state boundary with Washington, while west-flowing Clearwater River defines the northern border of the city. At their confluence at the city's northwest corner, the lower Snake River turns west into Washington, and after passing four dams, empties into the Columbia River at Burbank.