South Slough National Estuarine Research Reserve

Oregon’s South Slough reserve is comprised of 4,771 acres of open water, emergent islands, tidal wetlands, salt marshes, conifer-forested uplands and streams. These habitats support a rich mix of fish and wildlife, including salmon great blue herons, bald eagles, migrating ducks, elk, sea otters, oysters, and crabs. Reserve staff support and coordinate research, education, and stewardship programs focused on enhancing scientific and public understanding of estuaries and contributing to improved estuarine management.

Visit the Reserve's Website

Vital Stats

  • State: Oregon
  • State Partner:

    Oregon Department of State Lands

  • Acreage: 4,771
  • Habitats: Uplands with conifer forests and stream systems, and lowlands with freshwater wetlands and ponds, high and low salt marshes, emergent islands, sand and mud flats, and eelgrass beds.
  • Designated: 1974
  • Site Profile: View
The South Slough reserve participates in the System-Wide Monitoring Program (SWMP), which collects, analyzes, and makes available weather, water quality, and nutrient data from all National Estuarine Research Reserves. Learn more


Dig for clams, attend a native plant workshop, hike the trails, paddle the estuary for a view of the marsh, or visit the Interpretive Center art gallery and see works of local painters. There are many ways to enjoy the South Slough.


Volunteers have many opportunities to use their skills and interests to support the work of the reserve—from helping out with the Christmas bird count and collecting samples in the salt marsh to restoring oyster beds and helping at the Visitors Center.  Find out about internship opportunities in research, education, business, stewardship, forestry, writing, and customer service.

Learn more

Become a Friend

The Friends of South Slough Reserve is a volunteer, non-profit organization that promotes and assists South Slough reserve in its educational and research activities and works to fund the Reserve and its programs. New members are always welcome. Learn more at

Did you know?

Established in 1974, South Slough was the very first National Estuarine Research Reserve in our system.


Bree Yednock
Acting Manager
South Slough National Estuarine Research Reserve
PO Box 5417, Charleston, OR 97420
T: 541-888-8270 ext. 302