The Calumet River is a system of heavily industrialized rivers and canals in the region between the south side of Chicago, Illinois, and the city of Gary, Indiana. Historically, the Little Calumet River and the Grand Calumet River were one, the former flowing west from Indiana into Illinois, then turning back east to its mouth at Lake Michigan at Marquette Park in Gary. Now the system is part of the Chicago Area Waterway System and through the use of locks flows away from Lake Michigan to the Cal-Sag Channel.
Background
The name "Calumet" is from the French colonial name for a particular type of Native American ceremonial pipe that served as a universal sign of peace among the Illiniwek, and which was presented to Pere Marquette in 1673.
Before human alteration, water flowed westward from LaPorte County, Indiana, along the Little Calumet River, made a hairpin turn at Blue Island, and flowed east along the Grand Calumet into Lake Michigan at the Miller Beach community of Gary, Indiana. The area is extremely flat and the course and even the direction of the river system has changed repeatedly. The low gradient gives the river only a very small current.
Industrial development in the Calumet River area began around the 1870s, and by 1890 the western reach of the Grand Calumet River was heavily polluted with the waste of steel mills, foundries, a meat packing plant, and glue and cornstarch factories. Industry continued to spread along the eastern reach of the river between 1890 and 1910, with similar results. These decades of unrestricted pollution have left the river sediments highly contaminated to this day.
In September 2008, areas of Lake and Porter County, Indiana, were declared national disaster areas. The Little Calumet River breached its levee and flooded portions of the towns of Munster and Highland, Indiana. In September 2019, Luxembourg-based ArcelorMittal notified Indiana officials of a toxic spill from its Burns Harbor steel mill had spilled into a branch of the Little Calumet River, resulting in short-term closures of three Lake Michigan beaches.
Segments of the Calumet River system
Calumet River
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.
The T.J. O'Brien Lock and Dam was installed across the river in 1960 to control the movement of water between Lake Michigan and the river.
Grand Calumet River
The Grand Calumet River, originating in Miller Beach, 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 per second of water into the lake. 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.
Little Calumet River
The Little Calumet River originally flowed from New Durham Township, LaPorte County, Indiana, to its junction with the Grand Calumet and Calumet rivers. Construction of the Portage Burns Waterway (Burns Ditch) in 1926 split the direction of flow of the Little Calumet River, at Hart Ditch, east of which it flows into Lake Michigan at the Port of Indiana Burns International Harbor. The confluence with Hart Ditch is located west of US-41 in North Township, Lake County. The Burns Ditch channelized the path of the Little Calumet River from its confluence with Deep River, at Three Rivers County Park, to the Port of Indiana by cutting through the Indiana Dunes. Three Rivers County Park is located on the border of Gary and Lake Station where I-65 meets the Borman Expressway.