Big Slough Wildlife Area is a critical wetland habitat in Oregon, attracting birdwatchers, hunters, and anglers to its rich ecosystem of marshes, sloughs, and riparian zones.
Big Slough Wildlife Area lies in the Willamette Valley of northwestern Oregon and covers diverse wetland habitats including marshes, flooded meadows, and open water areas. Established primarily for waterfowl habitat management, it is managed by the Oregon Department of Fish and Wildlife and provides key sanctuary and breeding grounds for migratory birds on the Pacific Flyway. The landscape includes interconnected sloughs that support a wide variety of aquatic species and plant communities such as cattails, sedges, and wild grasses. Wildlife enthusiasts can observe a rich diversity of bird species including ducks, geese, herons, and the occasional sandhill crane. The area's open water and flooded wetlands also make it a prime location for fishing, especially for species like largemouth bass and black crappie. Hunting is permitted during regulated seasons, attracting waterfowl hunters seeking plentiful game. Access to Big Slough is primarily through gravel roads and small trails, offering opportunities for walking and wildlife observation. Despite its modest size compared to larger federal preserves, it plays an important environmental role by protecting critical wetland habitat within a rapidly developing valley. Visitors appreciate quiet, low-impact recreation, with opportunities for photography, birdwatching, and nature study. Management emphasizes habitat restoration including invasive species control and water level manipulation to optimize conditions for native wildlife. The area's proximity to Corvallis and Albany makes it an important outdoor destination for residents and regional visitors interested in wetland ecosystems and waterfowl conservation.
Extensive wetland marshes and flooded sloughs ideal for waterfowl viewing
Diverse bird populations including ducks, geese, and herons during migration seasons
Fishing opportunities for largemouth bass and black crappie in open water areas
Quiet walking trails offering immersive wildlife observation experiences
A large complex of marshes and shallow water bodies providing vital habitat for migratory waterfowl and aquatic wildlife.
Key staging and wintering grounds for species on the Pacific Flyway including mallards, Canada geese, and pintails.
Managed open water areas supporting warm-water fish species that attract local anglers.