Lake Winnebago is Wisconsin's largest inland lake, covering approximately 138,000 acres with a sprawling 88 miles of shoreline. This shallow waterbody averages only 15.5 feet deep with a maximum depth of 21 feet. The lake features many shallow reefs along the western shore, a drop-off shoreline on the east, and several islands along the west shore. It's fed by two primary tributaries, the Wolf River and the Fox River, and is part of the larger Winnebago Pool system of interconnected lakes. With its diverse underwater structure, Lake Winnebago has earned a reputation as one of the nation's premier walleye fisheries, attracting anglers year-round for both open water and ice fishing opportunities.