Note: Horicon Marsh water levels information available
Horicon Marsh is the largest freshwater cattail marsh in the United States. Located in southeast Wisconsin, Horicon Marsh has been formally recognized as a Wetland of International Importance by the Ramsar Convention of the United Nations. This renowned marsh is now home to the Horicon Marsh Education and Visitor Center. The Wildlife Education Program has been conducted at the marsh since the mid-1980s. This program focuses on the abundant wildlife resources of the marsh, their ecology and applied management.
- Horicon Marsh Education and Visitor Center