The Elwha River is a 45-mile-long river located in the Olympic Peninsula in Washington State. It flows from the Olympic Mountains to the Strait of Juan de Fuca. Historically, the Elwha River was a vital salmon habitat for the Lower Elwha Klallam tribe until two hydroelectric dams, the Elwha Dam and the Glines Canyon Dam, were built in the early 1900s. The dams were removed in 2011 and 2014, respectively, as part of the largest dam removal project in U.S. history. Since then, the river has been gradually returning to its natural state, restoring salmon habitats and benefiting other wildlife. The river is also a popular spot for recreational activities such as fishing, kayaking, and hiking. Agriculture is limited in the area due to the rugged terrain and high rainfall.