Course
The river rises in southern Mount Rainier National Park, fed by the Nisqually Glacier on the southern side of Mt. Rainier. It flows west through Ashford and Elbe along Route 706. It is then impounded for hydroelectricity by the Alder Dam, completed in 1944, and the LaGrande Dam, completed in 1912 and rebuilt in 1945. They hold back Alder Reservoir and the inaccessible two-mile long LaGrande Reservoir. Before the construction of the dams, a natural fish barrier prevented anadromous fish from ascending the Nisqually above what is now La Grande Reservoir.
Below Elbe, the river flows northwest through the foothills, passes near McKenna, Washington, and through Fort Lewis and the Nisqually Indian Reservation. The river crosses beneath Interstate 5 and into the Nisqually River Delta, which is the location of the Nisqually National Wildlife Refuge. The Nisqually enters the Nisqually Reach portion of Puget Sound approximately 15 miles (24 km) east of Olympia.
Read more about this topic: Nisqually River