Lake Winnebago is the largest lake in Wisconsin, covering approximately 137 square miles. It is situated in the east-central part of the state and is part of the Winnebago System, which includes several rivers and smaller lakes. The lake is known for its recreational activities, including fishing, boating, and swimming. The lake has a maximum depth of about 21 feet and is fed by the Fox River and Wolf River. It is home to various fish species, such as walleye, perch, and white bass, making it a popular destination for anglers. The surrounding area also offers parks and trails for outdoor enthusiasts.