East Chicago, 10 miles from the headwaters, Lake County, Indiana
• elevation
577 ft (176 m)
Length
13.0 mi (20.9 km)
The Grand Calumet River is a 13.0-mile-long (20.9 km)[3] river that flows primarily into Lake Michigan. Originating in Miller Beach in Gary, it flows through the cities of Gary, East Chicago and Hammond, as well as Calumet City and Burnham on the Illinois side. The majority of the river's flow drains into Lake Michigan via the Indiana Harbor and Ship Canal, sending about 1,500 cubic feet (42 m3) per second of water into the lake. A smaller part of the flow, at the river's western end, enters the Calumet River, and through the Illinois ultimately drains into the Mississippi River.
Today, a large portion of the river's flow originates as municipal and industrial effluent, cooling and process water and storm water overflows. Although discharges have been reduced, a number of contaminants continue to impair the area. The river is among the country's most severely polluted,[4] and as of 2015 was in the late stages of a major dredging project to remove thousands of tons of contaminated sediment and rehabilitate the river ecosystem.[5]
^McCafferty (2008), pp. 17–19.
^ ab"Grand Calumet River". Geographic Names Information System (GNIS). United States Geological Survey. January 15, 1980. Retrieved February 1, 2015.
^"National Hydrography Dataset High-Resolution Flowline Data". The National Map. United States Geological Survey. Archived from the original on March 29, 2012. Retrieved May 19, 2011.
^Lydersen, Kari (January 26, 2013). "Grand Calumet River Delivers Toxic Load to Lake Michigan". Chicago: WBEZ. Retrieved February 2, 2015.
^Cite error: The named reference legacy was invoked but never defined (see the help page).
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