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The Illinois River (Miami-Illinois: Inoka Siipiiwi) is a principal tributary of the Mississippi River at approximately 273 miles (439 km) in length. Located in the U.S. state of Illinois, the river has a drainage basin of 28,756.6 square miles (74,479 km 2).
Apr 7, 2024 · Illinois River, navigable stream of northern and central Illinois, U.S. It is formed by the junction of the Des Plaines and Kankakee rivers in Grundy county, about 10 miles (16 km) southwest of Joliet. It flows generally west across the state until just north of Hennepin, where it turns abruptly.
- The Editors of Encyclopaedia Britannica
May 15, 2023 · The Illinois River is the most significant river in the state of Illinois. Formed by the Des Plaines and Kankakee River junction, the Illinois River traverses west from Joliet toward Hennepin. Then, it changes course and flows southward until it joins the Mississippi River at Grafton.
The Illinois River flows entirely within our state and is the second longest river at 332 miles. The Kaskaskia at 292 miles, Little Wabash at 237 miles and Wabash at 230 miles round out the top five longest rivers within or along Illinois' boundaries. Every river and stream has a watershed or drainage basin, that is, the total land area that ...
Illinois has approximately 86,076 miles of river, of which 17.1 miles of one river are designated as wild & scenic—approximately 2/100ths of 1% of the state's river miles. The Middle Fork of the Vermilion River is the only national wild and scenic river in Illinois.
The Illinois River shines as one of the West’s premier whitewater rivers and as a wild salmon and steelhead refuge. + −. Recreational. Scenic. Wild. View larger map. Designated Reach. October 19, 1984. From the boundary of the Siskiyou National Forest downstream to its confluence with the Rogue River. Outstandingly Remarkable Values. Botany.
Oct 31, 2023 · Flowing through the Ozark borderlands of eastern Oklahoma and western Arkansas, the Illinois River is fed by 1,660 square miles of drainage area and serves as the primary tributary for the largest lake in eastern Oklahoma, Tenkiller Ferry Reservoir.
