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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 ...
Macoupin Creek is a 99.7-mile-long (160.5 km) [2] tributary of the Illinois River, which it joins near the village of Hardin, Illinois.. The word macoupin refers to the yellow pond lily [3] [4] (Nuphar advena), a native plant of the regional wetlands, and a favorite food source of local Indians.
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 ...
Mitchell's Grove Nature Preserve is a 184 acres (74 ha) nature preserve and State Natural Area [2] located in LaSalle County, Illinois, situated between Tomahawk Creek and the Little Vermillion River north of their confluence. It is composed of diverse terrain with over 300 plant species present. [3]
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 .
This category contains the native flora of Illinois as defined by the World Geographical Scheme for Recording Plant Distributions. Taxa of the lowest rank are always included; taxa of higher ranks (e.g. genus) are only included if monotypic or endemic. Include taxa here that are endemic or have restricted distributions (e.g. only a few countries).
A diversion tunnel was constructed approximately 1.6 miles (2.6 km) north of the confluence with the Des Plaines River, at a point where the two streams are separated by only 1,600 feet (490 m). Tributary streams include Addison Creek. The Graue Mill historic gristmill stands on the bank of the creek in Oak Brook.
The Kaskaskia River is a tributary of the Mississippi River, approximately 325 miles (523 km) long, [2] in central and southern Illinois in the United States. [3] The second largest river system within Illinois, it drains a rural area of farms, as well as rolling hills along river bottoms of hardwood forests in its lower reaches.