Located in northeastern Wisconsin, the Oconto River is a tributary of Lake Michigan via Green Bay. The Oconto River is 56.9 miles (91.6 km) long, stretching from the confluence of its North and South branches at Suring, Wisconsin, to Green Bay at the city of Oconto. Its drainage basin covers 2,416 square miles (6,260 km2), encompassing most of Oconto County as well as portions of Shawano, Marinette, Menominee, Langlade, and Forest counties.
- ^ U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map, accessed December 19, 2011
Coordinates: 44°53′39″N 87°49′48″W / 44.8942°N 87.8300°W