Green Bay National Wildlife Refuge is a National Wildlife Refuge of the United States located in the state of Wisconsin. It includes all or part of six islands in Lake Michigan: Hog Island, Plum Island, Pilot Island, part of St. Martin Island and Rocky Island. Additionally it includes part of Detroit Island.Green Bay National Wildlife Refuge Hunt, Fish & Public Use Regulations 2021-2022, USFWS (Archived February 23, 2022) The islands are near Washington Island off the tip of the Door Peninsula of Wisconsin and the Garden Peninsula of Michigan.

History An executive order in 1913 declared Hog Island a national preserve for the benefit of native birds. Plum and Pilot Island were transferred from the U.S. Coast Guard to the U.S. Fish and Wildlife Service in 2007.

The Green Bay National Wildlife Refuge became the second National Wildlife Refuge in Great Lakes area and the 28th overall. Gravel Island National Wildlife Refuge was created under the same executive order. In 1970, the islands which at the time where included in the Green Bay National Wildlife Refuge and Gravel Island National Wildlife Refuge were declared part of the Wisconsin Islands Wilderness Area. This wilderness area is one of the smallest in the entire United States."Green Bay National Wildlife Refuge: About Us, U.S. Fish & Wildlife Service, Retrieved May 4, 2022. The refuge is managed by staff at the Horicon National Wildlife Refuge, in Mayville, Wisconsin."Green Bay National Wildlife Refuge Island Habitat Restoration Project" Wisconsin Department of Natural Resources. March 1, 2005, (Archived March 8, 2012) Public use of the land is prohibited on the islands which are located in the wilderness area,Profile: Green Bay National Wildlife Refuge, fws.gov, (Archived December 2, 2013) contrary to the testimony given before a joint meeting of several U.S. House subcommittees in preparation for the establishment of the Wilderness Area.Designation of Wilderness Areas: Hearings Before the Subcommittees on Public Lands and National Parks and Recreation of the Committee on Interior and Insular Affairs, 1970, page 243 In 1969, the U.S. Representatives present at the subcommittee meeting were told that out of a group of six lake islands including the islands in the proposed Wisconsin Islands Wilderness, five out of six of them would be open to the general public.

Lighthouse facilities were constructed on Plum Island and Pilot Island. By 1939, the Coast Guard had taken control of Plum Island, and acquired control of the lighthouse on the island. The old wooden lighthouse was eventually replaced with a steel structure in 1964, and workers were moved to the island in order to oversee the operations of the lighthouse. At this time the lighthouse used range lights. By 1969, these lights were replaced with an automatic lighting system. The lighthouse is still in use today, but Coast Guard employees no longer remain on the island to operate it.Plum Island Rear Range Lighthouse, us-lighthouses.com by Bryan Penberthy, December 2, 2007 The Plum Island Range Lights and the Pilot Island Light are listed in the National Register of Historic Places.

On October 17, 2007, Pilot and Plum Islands were officially added to the Green Bay National Wildlife Refuge. Previously under the control of the United States Coast Guard, they are now managed by the United States Fish and Wildlife Service.Public Land Order No. 7681; Revocation of the Withdrawal Established by Executive Orders Dated December 11, 1848 and May 28, 1858; Withdrawal and Transfer of Jurisdiction; Wisconsin, federalregister.gov, October 17, 2007; also see Discovering Plum Island: Historic Island Now Open to Public by Jackson Parr, Peninsula Pulse June 9, 2017

Geography and geology Hog Island covers of land, Plum Island , and Pilot Island approximately .

The islands are part of the Niagara Escarpment as opposed to the Black River or Magnesian escarpments. The underlying bedrock is dolomite. The area was sculpted by glaciers. The islands have been eroded, inundated, and re-shaped over many years by changing water levels.

Biota Flora

Green Bay National Wildlife Refuge contains a variety of plants native to the area. Hog Island has an abundance of Canada yew. This plant was functionally extirpated on St. Martin's Island because of the introduction of white-tailed deer and their appetite for this shrub.Habitat Management Plan for Green Bay and Gravel Islands National Wildlife Refuges, by Will Taylor and Dan Salas for Cardno Limited of Brisbane, Australia and Sadie O'Dell, Refuge Biologist, March 27, 2018, page 1-6 (page 34 of the pdf) The rare dwarf lake iris (Iris lacustris) can be found along the shoreline of Plum Island. Plum Island is most well known for having large forests of basswood, sugar maple, and white cedar. These trees are associated with the dolomite geology of the area.

Fauna

The Green Bay National Wildlife Refuge provides habitat for many kinds of wildlife, especially birds. The refuge was established first for the purpose of conserving native birds of the Great Lakes Basin. Great blue herons, red-breasted mergansers, and herring gulls are common. Migratory birds breed undisturbed by human presence on the islands. No development has occurred on Hog Island due to its small size, remoteness, and landing difficulties.

Plum Island is open to public use. The local flora provides habitat for birds. Pilot Island provides a safe haven for approximately 3,600 double-crested cormorant nests and about 650 herring gull nests. Black-crowned night herons also find nesting habitat there.Habitat Management Plan for Green Bay and Gravel Islands National Wildlife Refuges, by Will Taylor and Dan Salas for Cardno Limited of Brisbane, Australia and Sadie O'Dell, Refuge Biologist, March 27, 2018, page 1-2 (page 16 of the pdf) Smallmouth bass are commonly found in the waters northwest of Plum and Pilot Islands.DRAFT Environmental Assessment for the Proposed 2019Fishing Plan for the Green Bay National Wildlife Refuge by the U.S. Fish and Wildlife Service, January 2019 (Archived May 4, 2022)

Wisconsin Islands Wilderness Area

In 1964, the United States Congress passed the Wilderness Act of 1964, which created the National Wilderness Preservation System. This bill declared almost of land across the United States federal wilderness."Wilderness Areas in the United States" The Encyclopedia of Earth. Retrieved 10-22-2009. In 1970, Hog Island and Gravel Island became one of the smallest areas of land protected by the Wilderness Act, and thus became known as the Wisconsin Islands Wilderness Area.

References

External links Green Bay National Wildlife Refuge