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The Illinois Basin is a Paleozoic depositional and structural basin in the United States, centered in and underlying most of the state of Illinois, and extending into southwestern Indiana and western Kentucky. The basin is elongate, extending approximately 400 miles (640 km) northwest-southeast, and 200 miles (320 km) southwest-northeast.
These basins, termed the Illinois Basin and Michigan Basin, allowed for extensive deposition of sedimentary rock during the Palaeozoic Era. [2] The Illinois Basin is a northwest–southeast asymmetrical structural basin that is filled with more than 4000 meters of Paleozoic sedimentary rocks. The basin covers most of Illinois, and extends into ...
The Illinois River (Miami-Illinois: Inoka Siipiiwi[4]) is a principal tributary of the Mississippi River at approximately 273 miles (439 km) in length. Located in the U.S. state of Illinois, [5] the river has a drainage basin of 28,756.6 square miles (74,479 km 2). [6] The Illinois River begins with the confluence of the Des Plaines and ...
The Kankakee River Basin drains 2,989 square miles (7,740 km 2) in northwest Indiana, 2,169 square miles (5,620 km 2) in northeast Illinois, and about seven square miles (18 km 2) in southwest Lower Michigan. The Kankakee River heads near South Bend, then flows westward into Illinois, where it joins with the Des Plaines River to form the Illinois.
View from the U.S. Turning Basin towards the Chicago Loop. At Ashland Avenue the river widens to form the U.S. Turning Basin, the west bank of which was the starting point of the Illinois and Michigan Canal. [37] Prior to 1983, this was where the US Coast Guard Rules of the Road, Great Lakes ended & Rules of the Road, Western Rivers began.
The Ohio River is a 981-mile-long (1,579 km) river in the United States. It is located at the boundary of the Midwestern and Southern United States, flowing in a southwesterly direction from western Pennsylvania to its mouth on the Mississippi River at the southern tip of Illinois. It is the third largest river by discharge volume in the United ...
Illinois has a maximum north–south distance of 390 miles (630 km) and 210 miles (340 km) east-west. Total area is 57,918 square miles (150,010 km 2), ranked 25th in size of the 50 states. Water area is 2,325 square miles (6,020 km 2); Lake Michigan accounts for most of this. Charles Mound in the northwest Driftless Area is the highest point ...
Cache River (Illinois) The Cache River is a 92-mile-long (148 km) [2] waterway in southernmost Illinois, in a region sometimes called Little Egypt. The basin spans 737 square miles (1,910 km 2) and six counties: Alexander, Johnson, Massac, Pope, Pulaski, and Union. [3] Located at the convergence of four major physiographic regions, the river is ...