East Okoboji Lake is a natural body of water, approximately 1,835 acres (7.43 km2) in area, in Dickinson County in northwest Iowa in the United States. It is part of the chain of lakes known as the Iowa Great Lakes. The area was long inhabited by the Santee or Eastern Dakota Sioux. The lake was known after its Dakota-language name, Okoboozhy, meaning reeds and rushes.
Geologically, the lake, like its neighbors, is a glacial pothole, a remnant of the most recent ice age approximately 13,000 years ago.
The lake is shallow, with an average depth of 10 ft (3.0 m) and a maximum depth of 22 ft (6.7 m). During the summer months, it is prone to stratification and to overgrowth with algae.
The lake is a popular fishing destination in the region, for both open water and ice fishing. East and West Lake Okoboji have a healthy population of numerous species including: Black Crappie, Bluegill, Channel Catfish, Largemouth Bass, Muskie, Northern Pike, Smallmouth Bass, Walleye, White Bass, Yellow Bass, Yellow Bullhead, and Yellow Perch.
