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All rivers with average discharge more than 15,000 cubic feet per second are listed. Estimates are approximate, because data are variable with time period measured and also because many rivers lack a gauging station near their point of outflow.
Kirkwood–Cohansey Aquifer, is located under the Pine Barrens (New Jersey) of southern New Jersey, contains 17 trillion US gallons (64 km 3) of some of the purest water in the United States. Mahomet Aquifer supplies water to some 800,000 people in central Illinois and contains approximately four trillion US gallons (15 km 3) of water.
Watersheds of Illinois is a list of basins or catchment areas into which the State of Illinois can be divided based on the place to which water flows.. At the simplest level, in pre-settlement times, Illinois had two watersheds: the Mississippi River and Lake Michigan, with almost the entire State draining to the Mississippi, except for a small area within a few miles of the Lake.
The Oklahoma Water Resources Board reported in 2015, that phosphorus levels had been declining in the Illinois River and its tributaries on the Oklahoma side of the state line. On October 1, 2015, the U.S. Environmental Protection Agency (USEPA) issued for public comment the water quality model for the Illinois River. [10]
Concern about additional groundwater withdrawal and the resulting repercussions has encouraged planning, management, and groundwater studies. The Illinois State Geological Survey and the Illinois State Water Survey have collected data that indicate declining water levels in certain parts of the Mahomet Aquifer. [citation needed]
Addison Creek; Apple River; Beaucoup Creek; Beaver Creek; Big Bureau Creek; Big Muddy River; Boneyard Creek; Bonpas Creek; Bubbly Creek; Buffalo Creek; Butterfield Creek
USGS operates a number of water-related programs, notably the National Streamflow Information Program [23] and National Water-Quality Assessment Program. [24] USGS Water data is publicly available from their National Water Information System [ 25 ] database.
Bodies of water of Cook County, Illinois (2 C, 3 P) Bodies of water of Crawford County, Illinois (1 C) Bodies of water of Cumberland County, Illinois (1 C, 1 P)