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The EPA ecoregion classification system has four levels, but only Levels I, III, and IV are shown on this list. Level I divides North America into 15 broad ecoregions (or biomes ). Illinois is almost entirely within the Eastern Temperate Forest environment Level I region, although very small sections in its extreme west are in the Great Plains ...
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 Waterway system consists of 336 miles (541 km) of navigable water from the mouth of the Calumet River at Chicago to the mouth of the Illinois River at Grafton, Illinois. Based primarily on the Illinois River , it is a system of rivers, lakes, and canals that provide a commercial shipping connection from the Great Lakes to the Gulf ...
The type locality is the Mazon River (or Mazon Creek), a tributary of the Illinois River near Morris, Grundy County, Illinois. The 25 to 30 meters of shale were formed approximately , during the Pennsylvanian period. The fossiliferous concretions are usually found within the thickest deposits of the Francis Creek Shale.
[13] [31] By simply restoring hydrologic processes such as periodic flooding that favor riparian vegetation, native communities may regenerate on their own (e.g., the Cosumnes River floodplain). [22] The successful recruitment of native species will depend on whether local or upstream seed sources can successfully disperse propagules to the ...
Edwards River; Elm River; Embarras River (Illinois) Fox River (Illinois River tributary), northern Illinois; Fox River (Little Wabash tributary), southern Illinois; Galena River; Grand Calumet River; Green River; Henderson Creek; Hickory Creek; Illinois River; Indian Creek; Iroquois River; Jackson Creek; Kankakee River; Kaskaskia River ...
The Sangamon River is a principal tributary of the Illinois River, approximately 246 miles (396 km) long, [2] in central Illinois in the United States. It drains a mostly rural agricultural area and runs through Decatur and past Springfield .
The Mazon River or Mazon Creek (/ m ə ˈ z ɒ n /), is a tributary of the Illinois River in the United States. The confluence is near Morris, Illinois. [2]The Mazon River is associated with the Mazon Creek fossils of the Francis Creek Shale, which are also exposed in strip mines and quarries near the River.