The refuge includes the Brown Farm Dike, which was breached in 2009 to restore tidal flow to 762 acres of former pasture land.
The area is home to over 200 bird species throughout the year.
It contains the southernmost point of the Puget Sound, serving as a critical nursery for salmon populations.
The boardwalk structure is specifically designed to allow tidal waters to move underneath, maintaining the natural salt marsh ecosystem.
The land was originally reclaimed for farming in the early 20th century before federal acquisition and subsequent habitat restoration.
Billy Frank Jr. Nisqually National Wildlife Refuge protects the Nisqually River delta, the largest relatively undisturbed estuary in the Puget Sound. The site features a mix of freshwater marshes, grasslands, and riparian forests that support diverse migratory bird populations. A signature feature is the one-mile-long boardwalk that extends over the tidal flats, providing elevated views of the estuary and the surrounding saltwater habitat. The refuge is named in honor of the Nisqually Tribe leader and treaty rights activist Billy Frank Jr. Habitats here are managed to support species such as Chinook salmon, steelhead trout, and bald eagles. Unlike many zoos, the refuge is a wild protected area focusing on ecological restoration and conservation rather than captive animal display. The site serves as a vital stopover point on the Pacific Flyway, hosting thousands of waterfowl seasonally.
The observation tower at the end of the boardwalk offers panoramic views of the delta with Mount Rainier visible in the background on clear days.
Bring binoculars, as the best wildlife viewing occurs at a distance from the main trails.
Check the local tide tables before visiting; bird activity and the visual landscape change significantly between high and low tide.
Carry layers of clothing, as the open delta is exposed to wind and unpredictable weather shifts.
Do not attempt to walk on the mudflats during low tide, as the terrain can be unstable and dangerous.
The visitor center and certain trails may have limited operations during federal holidays; periodic maintenance closures occur for trail repairs.
Stay strictly on designated trails and boardwalks to protect sensitive salt marsh vegetation; pets and bicycles are prohibited on most trails.
