Osakis Fishing Map, Lake Lake Osakis is a wonderful multi-species lake, and is one of the state's best and most popular lakes. It is known for large bluegill, with 1- to 1 3/4-pound fish caught each year. Tops for ice fishing. Made of durable, waterproof material Shaded depth areas Expertly researched, color coded, marked fishing areas included and boat accesses clearly marked