Iowa Great Lakes, popular resort area in Dickinson county, northwestern Iowa, U.S., just south of the Minnesota border. Included are Spirit (or Big Spirit), West Okoboji, East Okoboji, and Silver lakes, all of which are of glacial origin. Spirit Lake, the largest—4 miles (6 km) long and 3 miles (5 km) wide—lies just north of the town of Spirit Lake, which is the chief community of the region. West Okoboji Lake is noted for the crystalline clarity of its waters.
A number of state parks, including Mini-Wakan and Marble Beach, provide public access to the lakes, which have swimming, boating, and fishing facilities. Rich in Native American lore, the region was the scene of the so-called Spirit Lake Massacre (March 1857) of more than 30 white settlers by a band of Sioux led by Inkpaduta. The incident is commemorated by a monument (1895) marking the mass grave of the settlers and by the Gardner Log Cabin-Museum in Arnolds Park. It also provided the background for MacKinlay Kantor’s novel Spirit Lake (1961). The Spirit Lake Fish Hatchery is in Orleans just north of the town of Spirit Lake, and Hawkeye Point, at an elevation of 1,670 feet (509 metres) the highest point in the state, is about 25 miles (40 km) west in Osceola county.