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The Metropolitan Water Reclamation District of Greater Chicago (MWRD), originally known as the Sanitary District of Chicago, is a special-purpose district chartered to operate in Cook County, Illinois, since 1889.
Global Watersheds, [30] web app and API; Stream Stats, [31] from the US Geological Survey, allows you to delineate watersheds in the US only; Model My Watershed, [32] by the Stroud Water Research Center, US only, can delineate watersheds based on an outlet point, and perform analyses related to water quality
GSSHA uses a square-grid, constant grid-size representation of watershed topography and characteristics, similar to a digital elevation model representation. Relevant model parameters are assigned to the model grids using index maps. Index maps are often derived from soils, landuse/land cover, vegetation, or other physiographic maps.
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 Chicago MSA, now defined by the U.S. Office of Management and Budget (OMB) as the Chicago–Naperville–Elgin, IL–IN–WI Metropolitan Statistical Area, is the third-largest MSA by population in the United States. The 2022 census estimate for the population of the MSA was 9,441,957.
The North Shore Channel is a 7.7 mile long canal built between 1907 and 1910 to increase the flow of North Branch of the Chicago River so that it would empty into the South Branch and the Chicago Sanitary and Ship Canal. [1] Its water is generally taken from Lake Michigan to flow into the canal at Wilmette Harbor.
The Calumet River, on the south side of Chicago, originally simply drained Lake Calumet to Lake Michigan. A canal extending it, legendarily claimed to have been created by voyageurs at the site of a frequent portage, was dug connecting the two Calumet Rivers at the point where the name now changes from Grand to Little.
Lake Calumet is the largest body of water within the city of Chicago. Formerly a shallow, postglacial lake draining into Lake Michigan, it was transformed into an industrial harbor during the 20th century. [1] Parts of the lake have been dredged, and other parts reshaped by landfill.