Wilderness Landscape & Natural Heritage
Theresa Marsh Wildlife Area spans approximately 2,312 acres in Dodge County, Wisconsin. Created to protect one of the largest and most intact wetland complexes in the southeastern part of the state, the area includes marshes, sedge meadows, hardwood swamps, and upland forests. The wildlife area supports an abundance of bird species, including waterfowl, shorebirds, and raptors, making it a prime destination for birdwatchers and nature enthusiasts. The diverse habitats also provide refuge for amphibians, mammals, and a variety of plant species native to the region. Historically, the area was shaped by glacial processes and has been managed by the Wisconsin Department of Natural Resources for habitat preservation and public recreation. Outdoor visitors enjoy hiking, wildlife observation, hunting, trapping, and fishing, particularly in the marshy and open water areas. There are several maintained trails and observation decks that provide excellent vantage points for viewing the wetland ecosystems. The area is valued not only for its ecological importance but also for offering a tranquil outdoor experience within driving distance of larger urban centers. In addition to its natural offerings, Theresa Marsh Wildlife Area plays a critical role in water filtration and flood control for the region. Visitors appreciate the quiet ambiance, accessibility for day visits, and the chance to engage closely with a variety of Wisconsin’s native wetland wildlife.
