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  • Barbara Hysell Monarch Butterfly

    The Migratory Generation is Developing

    Did you know that the monarch butterflies that are caterpillars or chrysalis right now will migrate south?

    Track Their Journey

  • 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

  • Refuge 5K Run Walk

    October 8 Walk or run to support wildlife. Registration starts at 9:00 am. For preregistration see form.

    Refuge Run Walk Registration Form 2016

Location / Hours

Refuge Facilities

Horicon National Wildlife, located in Mayville WI, encompasses the northern two-thirds of the Horicon Marsh. Refuge public use areas are open year-round - daylight hours. Visitor Center Hours: Jan-Mar & Dec: Monday-Friday 9a.m.- 4p.m. + 1 Sat/month. Dates for 2016: Jan 16, Feb 13, Mar 19, Dec 3. For 2017: Jan 21, Feb 11, Mar 18, Dec 2 Apr-Nov: (Peak visitor season) Monday-Saturday 9 a.m.- 4 p.m. (+ Sun. in Oct.) Open July 4, Labor and Columbus Days. (*Closed all other federal holidays and noon closure on Christmas and New Years Eves*). The office and visitor center is located on Cty Rd. Z on the east side of Horicon Marsh.

About the Complex

Horicon Leopold Complex

Horicon National Wildlife Refuge is part of a Complex that includes Fox River, Green Bay and Gravel Island National Wildlife Refuges as well as Leopold 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  

Follow NWRS Online


Public Programs / Education

  • Public Programs and Events

    Refuge and marsh-wide.

    Horicon Marsh Public Programs and Events Fall/Winter 2017
  • Refuge Seeks Public Input on Environmental Assessment for Proposed Hunt Plan

    The Refuge is proposing to update the existing Hunt Plan and to open new areas and species during the Wisconsin state seasons beginning in the 2017/2018 season. The proposed changes would open additional acreage (231 acres) to deer and upland game (squirrel, pheasant, partridge, and rabbit) hunting on Horicon NWR, would open additional acreage (80 acres)to deer hunting on Fox River NWR, would open wild turkey hunting on Horicon NWR, and would add migratory bird species (geese) to migratory bird hunting for Learn to Hunt and special hunt programs on Horicon NWR. A Draft Environmental Assessment and a Draft Hunt Plan are available for public comment regarding the proposed hunting activities on these refuges. The 30-day comment period will run from July 9, 2016 through August 9, 2016. Please review the proposed changes and provide written comments to Horicon NWR, W4279 Headquarters Road, Mayville, WI 53050, or by email to . For more information, contact Steve Lenz, Complex Project Leader, at 920-387-2658 ext.111.

    Draft EA and Hunt Plan
Page Photo Credits — All photos courtesy of USFWS unless otherwise noted.
Last Updated: Aug 16, 2016
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