Iowa Great Lakes

The Iowa Great Lakes, often referred to as Okoboji, is a group of natural lakes in northwestern Iowa in the United States. There are seven lakes in the region totaling 12,687 acres (5,134 ha) with the three principal lakes of the group being Big Spirit Lake, West Okoboji Lake, and East Okoboji Lake. They are the largest natural lakes in the state of Iowa. The largest, Spirit Lake, is 5,684 acres (2,300 ha). The lake area extends to the north into Jackson County, Minnesota. The headwaters of Little Sioux River flow past the west side of the lake area.