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  • October Monarch 2

    Missing the Monarchs?

    While many monarchs head to Mexico for the winter, others overwinter in Texas, California, or Florida.

    Save the Monarch

  • One Marsh, Three Centers

    Horicon Marsh has three visitor centers, one federal, one state and one non-profit.

    Three Centers and Friends

  • Refuge National Map

    Check out details of Refuges across the United States. Set the zoom for detail.

    National Refuge System

  • St. Martin Island

    Expansion of the Green Bay NWR

    The Green Bay National Wildlife Refuge adds another 1290 acres with the additions of St. Martin Island and Rocky Island.

    Feature Story

Location and Hours, Mayville, WI

Hours and Location

The Refuge visitor center is open year-around.


About the Complex

Horicon Leopold Complex

Horicon National Wildlife Refuge is part of a Complex that includes three other refuges and one wetland management district.

Horicon is managed as part of the Horicon Leopold Complex.

Learn 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  

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Public Programs/Education

Page Photo Credits — All photos courtesy of USFWS unless otherwise noted.
Last Updated: Nov 17, 2015
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