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The surface level of the river is maintained at 0.5 to 2 feet (0.15 to 0.61 m) below the Chicago City Datum (579.48 feet [176.63 m] above mean sea level) except for when there is excessive storm run-off into the river or when the level of the lake is more than 2 feet below the Chicago City Datum. [29]
Community areas in Chicago. A map of the 77 community areas, broken down by purported regions. While the areas have official use and definition, the color groupings are unofficial, and such "regions" may be defined differently, grouped differently, or not be used at all. The city of Chicago is divided into 77 community areas for statistical and ...
According to the United States Census Bureau, the City of Chicago has a total area of 606.1 km 2 (234.0 sq mi). 588.3 km 2 (227.1 sq mi) of it is land and 17.8 square kilometres (6.9 sq mi) of it is water. The total area is 2.94% water. The city has been built on relatively flat land, the average height of land is 579 feet (176 m) above sea level.
Location. (historic dividing point) 3100 West 31st Street, Chicago, Cook County, Illinois, US. Range. Valparaiso Moraine. Coordinates. 41°50′14″N 87°42′8″W / 41.83722°N 87.70222°W / 41.83722; -87.70222. The Chicago Portage was an ancient portage that connected the Great Lakes waterway system with the Mississippi River ...
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 River begins with the confluence of the Des Plaines and ...
South Branch Chicago River in Chicago, Illinois. (. 41°50′30″N 87°40′33″W / 41.8416°N 87.6757°W / 41.8416; -87.6757. ) The Chicago Sanitary and Ship Canal, historically known as the Chicago Drainage Canal, is a 28-mile-long (45 km) canal system that connects the Chicago River to the Des Plaines River. It reverses the ...
Print/export Download as PDF; Printable version; ... Bubbly Creek or South Fork South Branch Chicago River; Calumet River. Grand Calumet River; Little Calumet River.
Coordinates: 41°42′N 87°57′W. Thomas J. O'Brien Lock & Dam, one of two major locks in the CAWS. The Chicago Area Waterway System (CAWS) is a complex of natural and artificial waterways extending through much of the Chicago metropolitan area, covering approximately 87 miles altogether. It straddles the Chicago Portage and is the sole ...