Willamette Floodplain

The Willamette Floodplain extends across 713 acres of bottomland interior valley grassland within the William L. Finley National Wildlife Refuge near Corvallis.

The land received National Natural Landmark designation in 1987, preserving the largest unplowed native grassland example in the North Pacific Border natural region.

Researchers and ecologists study the floodplain's native plant communities and wildlife habitats to understand the valley's original environmental characteristics.

Visitors access the floodplain through the William L. Finley National Wildlife Refuge, located 10 miles south of Corvallis via Highway 99W or Bellfountain Road.

Five plant species found in this floodplain are listed as candidate threatened or endangered by the U.S. Fish and Wildlife Service.

Location: Oregon

GPS coordinates: 44.41350,-123.29900

Latest update: March 13, 2025 05:14