Stretching leisurely for six and a half miles along the sandy shore of Lake Michigan in northern Illinois, Illinois Beach State Park encompasses the only remaining beach ridge shoreline left in the state.

Illinois Beach is a unique and captivating natural resource for all to enjoy. It was created by the titanic forces of glacial advance and retreat and the steady winds that breathed across expansive Lake Michigan. The park has dunes and swales with sprawling marshes, forests of oak and vast arrays of animal life and vegetation.

The 4,160-acre park, consisting of two separate areas, offers ample opportunities for swimming, boating, picnicking, hiking, fishing, camping and just appreciating nature.

More than 650 species of plants have been recorded in the dunes area alone, including dozens of types of colorful wildflowers. Prickly pear cactus thrives in large colonies in the dry areas, and the wet prairies are carpeted with a wide variety of grasses and sedges. Large expanses of marsh in the swales support dense stands of cattail, bluejoint grass, prairie cordgrass, reed grass, big bluestem and sedges.

The sandy ridges are crowned by black oak forests with an open, savanna-like appearance, and several kinds of fragrant pines, introduced here a century ago, also prosper in the southern area.

Just north of these pines is the Dead River which actually is a stream that is blocked by sandbars much of the year forming an elongated pond. When the water finally rises high enough, it breaks through the sandbar and drains the surrounding marshes. The abundance of aquatic plants and fish flourishing in this changing environment belie its name.