Public Use Information

Refuge Parcel of Detroit Island Opened for Public Use

The U.S. Fish and Wildlife Service announced the addition of a 148-acre parcel of Detroit Island to the Green Bay National Wildlife Refuge on March 28, 2019. The establishing purpose for the parcel on Detroit Island is “…to protect native and migratory bird habitat and endangered species habitat within the Great Lakes Basin ecosystem.” Detroit Island is located in Lake Michigan off the tip of Wisconsin's Door County Peninsula, near Washington Island, Wisconsin. The 148-acre refuge owned parcel of Detroit Island is a part of the Green Bay National Wildlife Refuge, which is managed by staff at the Horicon National Wildlife Refuge Complex in Mayville, WI. Rules and regulations pertaining to the refuge owned parcel on Detroit Island are as follows: The parcel is open for general public use during daylight hours Memorial Day weekend through Labor Day weekend for outdoor enjoyment including hiking, wildlife observation, and nature photography. Access is via boat only. Dogs are welcome but must be leashed and pet waste picked up and removed. Refuge land on Detroit Island is also open for white-tailed deer hunting according to state regulations and state seasons. No special refuge permit is required. Access is by boat, and may not exceed one hour before or one hour after legal shooting hours. The parcel is located on the west shoreline at coordinates: N 45o 18’ 17.7” W 086o 54’ 11.6” and is posted with boundary signs and has a boot brush station required for use to reduce the spread of invasive species. Shoreline landing by water craft is best approached with caution due to rocky waters and gravel and driftwood shoreline. Refuge boundary signs are posted on all sides, and refuge staff ask that you please respect the private lands owned on the southwest and northern boundaries of the refuge owned parcel. There are no facilities or restrooms to accommodate visitors, and use is best described as primitive.

Green Bay NWR Hunt Map 2019

Plum Island Nuisance Deer Control Program

The U.S. Fish and Wildlife Service is partnering with the Wisconsin Department of Natural Resources to implement a Nuisance Deer Control Program on Plum Island, of the Green Bay National Wildlife Refuge. Controlling the deer on Plum Island will have a positive impact on forest regeneration and the rare plant community of this alvar ecosystem. Currently, there is an overabundance of deer, which are impacting sensitive plant communities. A maximum of 30 deer are able to be harvested to meet the conservation objectives of the nuisance deer program. Groups will be notified by refuge staff prior to their hunt period exactly how many tags remain to be filled. When all 30 of the nuisance tags have been filled, all subsequent groups will be notified, and the nuisance control program will end for the year. Applicants will be allowed to take up to eight people with them to hunt. The application period begins October 1, 2019, and ends October 9, 2019. Completed Special Use Permit Applications must be received by mail or e-mail by 4:00 P.M. on October 9, 2019. Completed applications should be e-mailed to, or mailed to: Horicon NWR, W4279 Headquarters Road, Mayville, WI 53050. Questions should be directed to Dustan Hoffman at 920-948-5037. See "Permits" for application and instructions.


Green Bay NWR Public Events and Volunteer Days

Explore Plum Island's natural treasures and help the Friends of Plum and Pilot Islands with improvement projects.

Green Bay Events 2019
Location & Hours

Location & Hours

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 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


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