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 |