Southern Illinois Southern Illinois Southern Illinois (also known as "Little Egypt") is the southern third of the state of Illinois. The southern part of Illinois has a unique cultural and regional history. Part of downstate Illinois, the Southern Illinois region is bordered by the two most voluminous rivers in the United States: the Mississippi River and its connecting Missouri River to the west, and the Ohio River to the east and south with the Wabash as tributary. Southern Illinois' most populated city is Belleville at 44,478. Other principal cities include Alton, Centralia, Collinsville, Edwardsville, Effingham, O'Fallon, Harrisburg, Herrin, Mt. Vernon, Marion, and
Muddy Run (Maurice River tributary) Known as Indian Head. Inden Head Was Named Due To The Numerous Arrow Heads Found At That Location and it Was Also Known As A Tribal Meeting Location For The Various Native American Indian Tribes MManitaco Manumuskin That Traveled These River Highways in Early America. Also Is Rainbow Lake NJ Landis Avenue Vineland To Bridgeton NJ Rt 56 Muddy Run (Maurice River tributary) Muddy Run is a tributary of the Maurice River in southwestern New Jersey in the United States. It flows in a generally southeastern direction through southern Gloucester County. Muddy Run (Maurice River) (section) Begins at Palatine Lake