Big Bay Lagoon is a 130 acre lake located in Ashland County on Madeline Island. It is partly in Big Bay State Park and partly in the Big Bay Town Park. It has a maximum depth of only 10 feet and fish include Panfish and Northern PIke. Visitors have access to the lake from Big Bay Town Park. A small channel connects the lagoon to Big Bay of Lake Superior. This is an absolutely gorgeous place to paddle. It is very quiet and is surrounded by marshland plants, forest, and the vast Lake Superior.