Chicago Area Waterway System

Chicago Area Waterway System
Carol Arney, U.S. Army Corps of Engineers · Public domain · source
Name	Chicago Area Waterway System
Type	Navigation and drainage network
Location	Northeastern Illinois

Chicago Area Waterway System is a network of canals, rivers, locks, and related infrastructure in northeastern Illinois centered on the city of Chicago and extending into DuPage, Cook, Lake, and Will counties. It integrates engineered channels and natural waterways to provide navigation, industrial transport, municipal drainage, and recreational boating, linking the Great Lakes basin with the Mississippi River watershed. The system has shaped urban development, industrial growth, and regional ecology since the 19th century and figures in debates involving interstate compacts, federal agencies, and international agreements.

Overview and History

Origins of the system trace to 19th‑century projects such as the Illinois and Michigan Canal and the development of the Chicago River, which intersected with ambitions tied to the Illinois and Michigan Canal's linking of the Great Lakes and the Mississippi River watersheds. Key 19th‑ and 20th‑century figures and entities involved include the John H. Kinzie era navigation improvements, the Illinois and Michigan Canal Company, and municipal initiatives under mayors such as Carter Harrison Sr. and Hazel M. Johnson‑era environmental activism. Federal involvement increased with projects by the United States Army Corps of Engineers and legislation like the Rivers and Harbors Act and the Water Resources Development Act, which funded locks, channelization, and flood control. Industrialization and the rise of railroads such as the Chicago, Burlington and Quincy Railroad and the Illinois Central Railroad parceled land and spurred canal modifications, while mid‑20th‑century urban planners and entities including the Metropolitan Water Reclamation District of Greater Chicago implemented large‑scale sewage and drainage reversal projects.

Geography and Components

The network includes principal waterways such as the Chicago River main stem, the North Branch Chicago River, the South Branch Chicago River, the Calumet River, the North Shore Channel, and the historic Illinois and Michigan Canal corridor. Engineered connectors include the Chicago Sanitary and Ship Canal, the Calumet-Saganashkee Channel (CAL-SAG) and the Calumet Sag Channel; locks and control structures such as the Lockport Lock and Dam and the Chicago Harbor Lock regulate flows. Tributary and adjacent features include the Des Plaines River, the Kankakee River, Tucker Point, and numerous municipal waterways within Oak Park, Illinois, Evanston, Illinois, Joliet, Illinois, and Gary, Indiana. The system interfaces with the Calumet River watershed, the Fox River (Illinois) watershed via canals, and proximal Great Lakes facilities like Milwaukee Harbor and Port of Indiana-Burns Harbor through regional navigation routes.

Engineering and Infrastructure

Major engineering milestones include the 1900s reversal of the Chicago River via the Chicago Sanitary and Ship Canal to carry wastewater away from Lake Michigan, accomplished with excavations, locks, and pumping by agencies such as the Sanitary District of Chicago (now the Metropolitan Water Reclamation District of Greater Chicago). The Army Corps of Engineers operates locks, dams, and channel maintenance, while commuter and freight rail crossings involve structures owned by companies like Union Pacific Railroad, CSX Transportation, and BNSF Railway. Water treatment and sewage infrastructure intersect with municipal facilities such as the Stickney Water Reclamation Plant and the O'Brien Water Reclamation Plant, and industrial riverbank modifications reflect projects by firms like ArcelorMittal and historic entities such as Commonwealth Edison. Flood control works include levees, floodwalls, pumping stations, and the TARP (Deep Tunnel Project), designed and administered by regional planners including the Chicago Metropolitan Agency for Planning and federal partners such as the Environmental Protection Agency.

Navigation, Commerce, and Recreation

The system supports commercial navigation linking inland ports and terminals at Port of Chicago, Burnham Harbor, and industrial facilities in Cicero, Illinois and Calumet City, Illinois to the Saint Lawrence Seaway and the Mississippi River corridor. Commodities moved include bulk materials for companies like US Steel, agricultural products routed via the Illinois Waterway, and petroleum and bulk liquids handled at terminals serving firms such as ExxonMobil and Marathon Petroleum. Recreational uses span boating, angling, and paddling in marinas and public spaces including Northerly Island, Jackson Park, Millennium Park shoreline areas, and the Chicago Harbor Lock access points; organizations such as the Chicago Yacht Club and the Friends of the Chicago River promote recreation and stewardship. Intermodal connections involve the Port of Loyola‑area facilities, barge traffic regulated under the Great Lakes St. Lawrence Seaway System, and regional tourism itineraries tied to Navy Pier and downtown attractions.

Environmental Issues and Water Quality

Environmental challenges include invasive species pathways between the Great Lakes and the Mississippi River basin, most notably concerns over Asian carp and vectors monitored by the United States Fish and Wildlife Service and the United States Geological Survey. Water quality issues have involved nutrient loading, combined sewer overflows impacting waters near Lake Michigan beaches, contamination from legacy industrial activities involving companies like U.S. Steel and Allis-Chalmers, and sediments contaminated with polychlorinated biphenyls (PCBs) and heavy metals remediated under coordination among the Environmental Protection Agency, the Illinois Environmental Protection Agency, and municipal agencies. Restoration and habitat projects led by non‑profits and agencies such as the Field Museum, Shedd Aquarium, and Openlands address riparian restoration, fish passage, and wetland reconstruction, while research institutions including University of Illinois Chicago and Northwestern University study hydrology, ecology, and contaminant transport.

Water Management, Flood Control, and Regulation

Governance involves multiple jurisdictions and legal instruments including the Illinois River Basin Project frameworks, interstate compacts, federal statutes like the Clean Water Act, and international commitments under agreements with Canada addressing Great Lakes water diversion. Operational control of locks and flows rests with the Army Corps of Engineers and regional entities such as the Metropolitan Water Reclamation District of Greater Chicago, with coordination through bodies including the Chicago Metropolitan Agency for Planning and municipal departments of public works in Chicago, Illinois and suburban municipalities. Flood mitigation employs structural measures such as the TARP system, levees along the Calumet River, and non‑structural strategies developed after events like the Chicago Flood of 1992 to reduce risk to infrastructure, transit systems operated by Chicago Transit Authority, and facilities serving O'Hare International Airport and Midway International Airport. Ongoing debates involve aquatic connectivity, invasive species controls such as electric barriers funded through federal appropriations, and long‑term resilience planning in collaboration with stakeholders including the Great Lakes Commission and tribal governments such as the Potawatomi nations.

Category:Water transport in Illinois