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Lake Information for Green Bay


Green Bay is an arm of Lake Michigan, located along the south-west coast of Michigan's Upper Peninsula and the east coast of Wisconsin. It is separated from the rest of the lake by the Door Peninsula in Wisconsin, the Garden Peninsula in Michigan, and the chain of islands between them, all formed by the Niagara Escarpment. Green Bay is some 120 miles (193 km) long, with a width ranging from about 10 miles (16 km) to 20 mi (32 km). It is 186 square miles (480 km2) in area.

Green Bay is the largest freshwater estuary in the world. At the southern end of the bay is the city of Green Bay, Wisconsin, where the Fox River enters the bay. The bay is navigable by large ships.

Green Bay cools faster than Lake Michigan in the fall, and becomes thermally stratified earlier in the summer. The southern bay is more than 7° C warmer than the northern bay, and 12° warmer than deep lake water.

Fishing Description: 

Fishing in Green Bay is much better in the northern end of the bay. It provides excellent fishing for yellow perch, trout, and walleye.

The DNR continues annual stocking of brown and rainbow trout, Chinook and coho
salmon, and splake in Upper Green Bay.

Brook Trout
Brown Trout
Chinook Salmon
Coho Salmon
Optional Information
Maximum depth: 
Surface area: 
Green Bay
Lake type: 

Businesses Located Nearby

Bait & Tackle

    Willow Bay Sporting Goods
  • 202 Main St - Oconto, WI
  • (920) 834-4910

Boat Rental

Vacation Rental

    Rose of Sharon Bed & Breakfast
  • 1109 Superior Ave - Oconto, WI
  • (920) 834-9885

Bar and Restaurant

    Betty's Bar
  • 3895 Wi-22 - Oconto, WI
  • (920) 834-5782
    Mc Guire's Sports Bar & Rstrnt
  • 211 S Rosera St - Lena, WI
  • (920) 829-6160
    Liquid Supply House
  • 522 Broadway Ave - Oconto, WI
  • (920) 835-9707

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