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Plan Your Visit

Plan Your Visit

Green Bay National Wildlife Refuge consists of Hog Island, Plum Island, Pilot Island St. Martin Island, and Rocky 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

Know Before You Go

Plum Island is open to public use during daylight hours Memorial Day weekend through Labor Day weekend for hiking, wildlife observation, and nature photography on designated trails and beach areas only. 

Dock rehabilitation has been completed. Commerical charters may be reserved in the near future to access Plum Island - More information TBA. Email .  

Kayaks, canoes, and dinghies may access Plum Island at the designated landing area (near boathouse on northeast side of Plum Island).

Special event days planned by the Friends of Plum and Pilot Islands, the U.S. Fish and Wildlife Service, and other partners will offer transportation via charter service on those days. (See the events schedule below for more information) 

Foot travel only on the island (no motorized vehicles or bicycles) and use of boot brush station is mandatory to prevent the spread of invasive species. Dogs are welcome but must be leashed and pet waste picked up and removed. 

NOT PERMITTED on Plum Island: fishing from the dock or beach; swimming from the dock or other structures; collection of plants, berries, seeds, mushrooms, rocks, fossils, antlers, or other artifacts; fireworks; camping; campfires; geocaches

Pilot, St. Martin, Rocky, and Hog Islands (Green Bay NWR) and Spider and Gravel Islands (Gravel Island NWR) are closed to public access for use by nesting birds. Please maintain ¼ mile distance from these islands to minimize disturbance to the birds and their nests/young. 

Other Visitor Information

Restrooms are available but drinking water and garbage cans are not. Please practice "Pack it in - Pack it out"

No entry fees

Cellular service is extremely limited

Plum Island coordinates: 85 56' 52.073"W
                                  45 18' 46.55"N

Washington Island Chamber of Commerce

Door County Visitor Bureau




2017 Green Bay NWR Events and Volunteer Work Days

Plum Island Regulations 

Plum Island Trail Map

Plum Island Kayak Brochure

Plum Island Wildlife Brochure  

Map of Refuge Islands   

Lake Michigan Islands Map





Last Updated: Feb 17, 2017
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