Wisconsin Ecological Services Field Office

Midwest Region


Wisconsin Field Office

2661 Scott Tower Drive
Green Bay, WI 54229-9565
Phone: 920-866-1717
Fax: 920-866-1710
TTY: 1-800-877-8339 (Federal Relay)

e-mail: GreenBay@fws.gov


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Wisconsin Field Office Fact Sheet


Fassett's locoweed at Plainfield Lake in central Wisconsin, 2008.  Photo by USFWS; Joel Trick.

Fassett's locoweed is an endangered plant that grows on the shores of some Wisconsin lakes.

Photo by USFWS; Joel Trick

Our History

For over 60 years Ecological Services has protected and restored fish, wildlife, plants and their habitats. Our roots trace back to the River Basins Program that reviewed Federal water development projects. Since 1945, Ecological Services’ responsibilities have expanded to include reviews of most Federal construction projects, endangered species, environmental contaminants, and a variety of conservation partnerships and grants.


Quick Facts

Wisconsin is home to 19 federally listed endangered, threatened, or candidate species, including the gray wolf, whooping crane, Karner blue butterfly, Hine’s emerald dragonfly, and prairie bush clover. Go here for more information about these and other rare and declining Wisconsin species.


Project Planning

Through early and thoughtful planning we work to conserve fish, wildlife, and their habitats by providing technical assistance on construction activities such as Corps of Engineers’ projects and permits, energy development (hydro and wind power), transportation and urban development.


Environmental Contaminants

The Environmental Contaminants program is the only program in the Federal Government solely responsible for evaluating the impact of environmental contaminants on fish and wildlife. We work to prevent, reduce and eliminate the adverse effects of environmental contaminants.


Threatened and Endangered Species

Our responsibilities under the Endangered Species Act include conserving declining species before listing is necessary, adding species to the list of threatened and endangered species, working to recover listed species, and cooperating with other Federal agencies to conserve endangered species.



The Green Bay Field Office leads rangewide recovery efforts for the endangered Karner blue butterfly and is involved with implementation of Wisconsin’s Statewide Habitat Conservation Plan for the butterfly. Also, through relicensing of hydroelectric dams in Wisconsin, we work to restore freshwater mussel populations and fish passage upstream and downstream of the dams for species that include lake sturgeon and paddlefish.



We administer a number of Endangered Species Act grants to provide funding to States, Tribes, organizations, and individuals for listed species conservation activities.



We work to restore habitat on private lands through the Partners for Fish and Wildlife Program. We work with others to restore Great Lakes coastal habitats through our Coastal Program.


Contacting the Field Office

Supervisor: Peter Fasbender
2661 Scott Tower Drive
New Franken, WI 54229

Phone: 920-866-1717
Fax: 920-866-1710
TTY: 1-800-877-8339 (Federal Relay)

e-mail: GreenBay@fws.gov



Wisconsin ES Field Office Home


Last updated: January 7, 2020