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Lake or Pond

O'Sullivan Lake

🌡️ Thermal regime Cold-water
📏 Max depth 45.7 m
📐 Surface area 4,293 ha
📋 Regulations FMZ 2 →

Fish species recorded here

White Sucker Yellow Perch Northern Pike Walleye Lake Trout Lake Whitefish Cisco Iowa Darter Spottail Shiner Burbot Johnny Darter x Tesselated Darter Emerald Shiner Ninespine Stickleback

Species come from MNRF survey records — absence of a record doesn't guarantee absence of the fish.

Open O'Sullivan Lake on the interactive map → for live weather, water levels, solunar times and full stocking history. Always confirm seasons, limits and sanctuaries in the official Ontario Fishing Regulations Summary.