Coronavirus (COVID-19) Notice
Although most refuge lands and outdoor spaces have remained open for the public to enjoy, we ask that you recreate responsibly.

  • Check alerts and local conditions on this website and call ahead for current information. Operations vary based on local public health conditions.
  • Consistent with CDC recommendations, all visitors (age 2 and older), who are fully vaccinated are required to wear a mask inside of federal buildings in areas of substantial or high community transmission.. All visitors who are not fully vaccinated must continue to wear masks indoors and in crowded outdoor spaces.
  • Most importantly, stay home if you feel sick and continue to watch for symptoms of COVID-19 and follow CDC guidance on how to protect yourself and others.


Public Use Information

Plan Your Visit

Events,maps,transportation information.

Plan Your Visit
Location & Hours

Location & Hours

Green Bay National Wildlife Refuge consists of Hog Island, Plum Island, Pilot Island, St. Martin Island, Rocky Island and a parcel located on Detroit Island. The islands are located in Lake Michigan, near Washington Island, off the tip of Wisconsin's Door County Peninsula. The refuge is managed by staff at the Horicon National Wildlife Refuge Complex in Mayville, WI. Contact 920-387-2658 or greenbay@fws.gov. Plum Island is open to public use Memorial Day weekend - Labor Day weekend.

Plan Your Visit

About the Complex

Horicon Leopold Complex

Green Bay National Wildlife Refuge is managed as part of the Horicon Leopold Complex.

Read more about the complex
About the NWRS

National Wildlife Refuge System

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The National Wildlife Refuge System, within the U.S. Fish and Wildlife Service, manages a national network of lands and waters set aside to conserve America's fish, wildlife, and plants.

Learn more about the NWRS