The Skagit Headquarters Unit is located at the south end of Fir Island in Skagit County, adjacent to the South Fork of the Skagit River and Skagit Bay.
The Fir Island Farm Unit is located in southwest Skagit County on Fir Island. The unit is located on Fir Island Road, about 2.7 miles west of the South Fork Skagit River bridge in Conway.
The Island Unit is located between Steamboat and Freshwater Sloughs in the Skagit River’s South Fork in Skagit County.