The St. Marys River is a 99-mile-long (159 km) tributary of the Maumee River in northwestern Ohio and northeastern Indiana in the United States. Prior to development, it was part of the Great Black Swamp. Today, it drains a primarily rural farming region in the watershed of Lake Erie.
The Green River is an 89-mile-long (143 km) tributary of the Rock River in northwestern Illinois in the United States. Via the Rock, it is part of the Mississippi River watershed. Much of the Green's course has been straightened and channelized. The Green River was created to drain water from former swamps to create better farmland. The Green River is home to many fish species including largemouth bass, smallmouth bass, hybrid bass, common carp, northern pike, and creek chub.
The Leaf River is a tributary of the Rock River, about 31 miles (50 km) long, in northwestern Illinois in the United States. Via the Rock, it is part of the Mississippi River watershed.
The Edwards River is a 73.7-mile-long (118.6 km) tributary of the Mississippi River in northwestern Illinois in the United States. It rises 3 miles (5 km) west of Kewanee in southeastern Henry County and flows generally westwardly into Mercer County, where it joins the Mississippi 2 miles (3 km) southeast of New Boston. In Henry County it collects the South Edwards River, which flows past Bishop Hill.
The Kyte River is a tributary of the Rock River, about 32 miles (51 km) long, in northern Illinois in the United States. It is sometimes known locally as "Kyte Creek". Via the Rock River, it is part of the watershed of the Mississippi River.
The Plum River is a tributary of the Mississippi River, about 46.6 miles (75.0 km) long, in northwestern Illinois in the United States. It rises in Jo Daviess County and flows generally south-southwestwardly into Carroll County, where it joins the Mississippi at Savanna. Among its several short tributaries are:
The Little Wabash River is a 240-mile-long (390 km) tributary of the Wabash River in east-central and southeastern Illinois in the United States. Via the Wabash and Ohio rivers, it is part of the watershed of the Mississippi River. It is the third largest tributary after the White River and the Embarras River.
Skillet Fork is a 98-mile-long (158 km) river in southern Illinois in the United States. It is a tributary of the Little Wabash River; via the Little Wabash, Wabash and Ohio rivers, it is part of the watershed of the Mississippi River.
Marys River is a tributary of the Mississippi River in Illinois. It drains a small watershed between the Big Muddy River and the Kaskaskia River. It joins the Mississippi just southeast of Chester, near Kaskaskia. Because of its proximity to Kaskaskia — the capital of Illinois Territory and the first capital of the State of Illinois — Marys River was the site of early settlements leading into the interior of Illinois.
The Middle Fork of the Vermilion River is a tributary of the Vermilion River in Illinois. The Middle Fork rises in Ford County and flows southeast to join the Vermilion near Danville.
The Mazon River or Mazon Creek, is a tributary of the Illinois River in the United States. The confluence is near Morris, Illinois.
The Fox River is a tributary of the Little Wabash River in southern Illinois. It rises in Jasper County to the southeast of Newton and flows south past Olney, then joins the Little Wabash at the northeast corner of Edwards County, near Mt. Erie. The river is 46.4 miles (74.7 km) in length.
The Sinsinawa River is a 21.1-mile-long (34.0 km) tributary of the Mississippi River. It rises in Grant County, Wisconsin, with headwaters just outside Cuba City, flowing southwards into Jo Daviess County, Illinois, joining the Mississippi a few miles west of Galena.
Salt Creek is a major tributary to the Sangamon River, which it joins at the boundary between Mason and Menard County, Illinois. There are at least two other Salt Creeks in Illinois, Salt Creek, and in Effingham County, Illinois.
The Menominee River is an 11.3-mile-long (18.2 km) tributary of the Mississippi River, which it joins in Jo Daviess County, Illinois.
The Little Menominee River is a 13.9-mile-long (22.4 km) tributary of the Upper Mississippi River, which it joins in Jo Daviess County, Illinois.
The Little Mackinaw River is an 18.5-mile-long (29.8 km) river in the U.S. state of Illinois. It is a tributary of the Mackinaw River, which it joins near Hopedale in Tazewell County. The river's name is derived from the Ojibwe word mikinaak meaning "turtle".
Panther Creek is a large creek in the U.S. state of Illinois. It rises near Minonk, and after flowing southwestward approximately 26 miles (42 km), discharges into the Mackinaw River near Eureka. The largest town in the Panther Creek drainage is El Paso, Illinois.
Rock Creek is a 24.7-mile-long (39.8 km) tributary of the Kankakee River in the U.S. state of Illinois. It empties into the Kankakee River in Kankakee River State Park, northwest of Kankakee, Illinois. It starts in higher land and then drops into the Kankakee River Valley. Because of this, the river has cut through the rock, forming a gorge, most of which is in the state park. A trail in the park follows the creek. The Rock Creek waterfall is approximately 1.5 miles (2.4 km) upstream from the main entrance of the state park and is on land owned by Camp Shaw-waw-nas-see, a private youth camp. The cliffs reach as much as 80 feet (24 m) high in the area from the park entrance to the falls.
This is a list of the National Register of Historic Places listings in Ralls County, Missouri.
