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Upper Green Bay Basin

The Upper Green Bay basin consists of 18 watersheds in northeastern Wisconsin, including all of Florence, Marinette and Oconto counties and a major portion of Forest County and smaller regions of Brown, Langlade, Menominee, Outagamie, Shawano and Vilas counties.

The basin consists of all waters draining to Green Bay between the city of Green Bay and the Wisconsin-Michigan border. Major river systems include the Menominee, Oconto and Peshtigo rivers in the north and the Pensaukee, Suamico and Little Suamico rivers further to the south. The Upper Green Bay GMU is a subset of the larger Green Bay hydrologic basin and includes all or portions of 16 watersheds entirely or partially within the Upper Green Bay basin.

Water Resource Information For Specific Watersheds

Watershed Name/View Details Watershed Size Lists (Streams, Lakes, Bays & Harbors) Counties Water Management Unit (WMU) Major Drainage System
Brule River 194.73 mi 2 GB18 Water lists Florence, Forest, Vilas Green Bay Lake Michigan
Little Peshtigo River 158.43 mi 2 GB08 Water lists Marinette, Oconto Green Bay Lake Michigan
Little River 210.34 mi 2 GB04 Water lists Marinette, Oconto Green Bay Lake Michigan
Lower North branch Oconto River 389.28 mi 2 GB05 Water lists Forest, Langlade, Marinette, Menominee, Oconto Green Bay Lake Michigan
Lower Oconto River 196.48 mi 2 GB03 Water lists Menominee, Oconto, Shawano Green Bay Lake Michigan
Lower Peshtigo River 194.98 mi 2 GB07 Water lists Marinette, Oconto Green Bay Lake Michigan
Middle Inlet and Lake Noquebay 155.58 mi 2 GB09 Water lists Marinette Green Bay Lake Michigan
Middle Peshtigo and Thunder Rivers 193.54 mi 2 GB10 Water lists Forest, Marinette, Oconto Green Bay Lake Michigan
Otter Creek and Rat River 141.51 mi 2 GB12 Water lists Forest, Marinette Green Bay Lake Michigan
Pemebonwon and Middle Menominee Rivers 290.8 mi 2 GB15 Water lists Florence, Marinette Green Bay Lake Michigan
Pensaukee River 163.77 mi 2 GB02 Water lists Oconto, Shawano Green Bay Lake Michigan
Pike River 284.74 mi 2 GB14 Water lists Florence, Forest, Marinette Green Bay Lake Michigan
Pine River 342.57 mi 2 GB16 Water lists Florence, Forest Green Bay Lake Michigan
Popple River 231.25 mi 2 GB17 Water lists Florence, Forest, Marinette Green Bay Lake Michigan
South branch Oconto River 219.27 mi 2 GB06 Water lists Langlade, Menominee, Oconto Green Bay Lake Michigan
Suamico and Little Suamico Rivers 171.78 mi 2 GB01 Water lists Oconto, Outagamie, Brown, Shawano Green Bay Lake Michigan
Upper Peshtigo River 338.33 mi 2 GB11 Water lists Forest, Marinette, Oconto Green Bay Lake Michigan
Wausaukee and Lower Menominee Rivers 187.05 mi 2 GB13 Water lists Marinette Green Bay Lake Michigan