The Pecatonica River is a tributary of the Rock River, 194 miles (312 km) long, in southern Wisconsin and northern Illinois in the United States.
The Pecatonica River in the Pecatonica River Woods State Natural Area in Iowa County, Wisconsin
Rock River (Mississippi River tributary)
The Rock River is a tributary of the Mississippi River, approximately 299 miles (481 km) long, in the U.S. states of Wisconsin and Illinois. The river was known as the Sinnissippi to Sauk and Meskwaki peoples; the name means "rocky waters".
Rock River at Rockford, Illinois
The Rock River Trail in Dodge County, Wisconsin
Watertown River Walk 02
Rock River flooding downtown Fort Atkinson, June 2004