Pioneer Park is an 18-acre floodplain forest along the West Branch DuPage River.

Several state and regionally rare species rely on Pioneer Park for habitat, including belted kingfishers, American redstarts, yellow-billed cuckoos, red-headed woodpeckers, and ovenbirds as well as breeding Cooper’s hawks, downy woodpeckers, and white-breasted nuthatches. Ecologists have identified beavers, coyotes, American toads, water and queen snakes, and a variety of freshwater mussels and aquatic invertebrates at the forest preserve as well.