The Chicago Sanitary and Ship Canal, historically known as the Chicago Drainage Canal, is a canal system that connects the

Chicago River The Chicago River is a system of rivers and canals with a combined length of that runs through the city of Chicago, including its center (the Chicago Loop). The river is one of the reasons for Chicago's geographic importance: the related Chic ...

to the

Des Plaines River The Des Plaines River ( ) is a river that flows southward for U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map , accessed May 13, 2011 through southern Wisconsin and northern Illinois''American H ...

. It reverses the direction of the Main Stem and the South Branch of the Chicago River, which now flows out of

Lake Michigan Lake Michigan ( ) is one of the five Great Lakes of North America. It is the second-largest of the Great Lakes by volume () and depth () after Lake Superior and the third-largest by surface area (), after Lake Superior and Lake Huron. To the ...

rather than into it. The related Calumet-Saganashkee Channel does the same for the Calumet River a short distance to the south, joining the Chicago canal about halfway along its route to the Des Plaines. The two provide the only navigation for ships between the

Great Lakes Waterway The Great Lakes Waterway (GLW) is a system of natural channels and artificial locks and canals that enable navigation between the North American Great Lakes. Although all of the lakes are naturally connected as a chain, water travel between the ...

and the

Mississippi River The Mississippi River is the main stem, primary river of the largest drainage basin in the United States. It is the second-longest river in the United States, behind only the Missouri River, Missouri. From its traditional source of Lake Ita ...

system. The canal was in part built as a

sewage treatment Sewage treatment is a type of wastewater treatment which aims to remove contaminants from sewage to produce an effluent that is suitable to discharge to the surrounding environment or an intended reuse application, thereby preventing water p ...

scheme. Prior to its opening in 1900, sewage from the city of

Chicago Chicago is the List of municipalities in Illinois, most populous city in the U.S. state of Illinois and in the Midwestern United States. With a population of 2,746,388, as of the 2020 United States census, 2020 census, it is the List of Unite ...

was dumped into the Chicago River and flowed into Lake Michigan. The city's

drinking water Drinking water or potable water is water that is safe for ingestion, either when drunk directly in liquid form or consumed indirectly through food preparation. It is often (but not always) supplied through taps, in which case it is also calle ...

supply was (and remains) located offshore, and there were fears that the sewage could reach the intake and cause serious disease outbreaks. Since the sewer systems were already flowing into the river, the decision was made to reverse the flow of the river, thereby sending all the sewage inland where it could be diluted before emptying it into the Des Plaines. Another goal of the construction was to replace the shallow and narrow

Illinois and Michigan Canal The Illinois and Michigan Canal connected the Great Lakes to the Mississippi River and the Gulf of Mexico. In Illinois, it ran from the Chicago River in Bridgeport, Chicago to the Illinois River at LaSalle-Peru. The canal crossed the Chicago ...

(I&M), which had originally connected Lake Michigan with the Mississippi starting in 1848. As part of the construction of the new canal, the entire route was built to allow much larger ships to navigate it. It is wide and deep, over three times the size of the I&M. The I&M became a secondary route with the new canal's opening and was shut down entirely with the creation of the

Illinois Waterway The Illinois Waterway system consists of of navigable water from the mouth of the Calumet River at Chicago to the mouth of the Illinois River at Grafton, Illinois. Based primarily on the Illinois River, it is a system of rivers, lakes, and cana ...

network in 1933. The building of the Chicago canal served as intensive and practical training for engineers who later built the

Panama Canal The Panama Canal () is an artificial waterway in Panama that connects the Caribbean Sea with the Pacific Ocean. It cuts across the narrowest point of the Isthmus of Panama, and is a Channel (geography), conduit for maritime trade between th ...

. The canal is operated by the

Metropolitan Water Reclamation District of Greater Chicago 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. Although its name may imply oth ...

. In 1999, the system was named a ''Civil Engineering Monument of the Millennium'' by the

American Society of Civil Engineers The American Society of Civil Engineers (ASCE) is a tax-exempt professional body founded in 1852 to represent members of the civil engineering profession worldwide. Headquartered in Reston, Virginia, it is the oldest national engineering soci ...

(ASCE). The Canal was listed on the

National Register of Historic Places The National Register of Historic Places (NRHP) is the Federal government of the United States, United States federal government's official United States National Register of Historic Places listings, list of sites, buildings, structures, Hist ...

on December 20, 2011.

Reasons for construction

Early Chicago

sewage Sewage (or domestic sewage, domestic wastewater, municipal wastewater) is a type of wastewater that is produced by a community of people. It is typically transported through a sewerage, sewer system. Sewage consists of wastewater discharged fro ...

systems discharged directly into

or into the

, which itself flowed into the lake. The city's water supply also comes from the lake, through water intake cribs located offshore. There were fears that sewage could infiltrate the water supply, leading to

typhoid fever Typhoid fever, also known simply as typhoid, is a disease caused by '' Salmonella enterica'' serotype Typhi bacteria, also called ''Salmonella'' Typhi. Symptoms vary from mild to severe, and usually begin six to 30 days after exposure. Often th ...

cholera Cholera () is an infection of the small intestine by some Strain (biology), strains of the Bacteria, bacterium ''Vibrio cholerae''. Symptoms may range from none, to mild, to severe. The classic symptom is large amounts of watery diarrhea last ...

, and

dysentery Dysentery ( , ), historically known as the bloody flux, is a type of gastroenteritis that results in bloody diarrhea. Other symptoms may include fever, abdominal pain, and a feeling of incomplete defecation. Complications may include dehyd ...

. During a tremendous storm in 1885, the rainfall washed refuse from the river far out into the lake (although reports of an 1885 cholera epidemic are untrue), spurring a panic that a future similar storm would cause a huge epidemic in Chicago. The only reason for the storm not causing such a catastrophic event was that the weather was cooler than normal. The Sanitary District of Chicago (now The Metropolitan Water Reclamation District) was created by the Illinois legislature in 1889 in response to this close call. In addition, the canal was built to supplement and ultimately replace the older and smaller

(built 1848) as a conduit to the Mississippi River system. In 1871, the old canal had been deepened in an attempt to reverse the river and improve shipping but the reversal of the river only lasted one season. The I&M canal was also badly polluted as a result of unrestricted dumping from city sewers and industries, such as the

Union Stock Yards The Union Stock Yard & Transit Co., or The Yards, was the meatpacking district in Chicago for more than a century, starting in 1865. The district was formed by a group of railroad companies that acquired marshland and turned it into a vast cen ...

Planning and construction, 1887–1922

By 1887, it was decided to reverse the flow of the Chicago River through

civil engineering Civil engineering is a regulation and licensure in engineering, professional engineering discipline that deals with the design, construction, and maintenance of the physical and naturally built environment, including public works such as roads ...

. Engineer

Isham Randolph Isham Randolph (March 25, 1848 in Clarke County, Virginia – August 5, 1920) was an American civil engineer who is best known as the chief engineer of the Sanitary District of Chicago during the construction of the Chicago Sanitary and Ship Ca ...

noted that a ridge about from the lakeshore divided the

drainage system from the

Great Lakes The Great Lakes, also called the Great Lakes of North America, are a series of large interconnected freshwater lakes spanning the Canada–United States border. The five lakes are Lake Superior, Superior, Lake Michigan, Michigan, Lake Huron, H ...

drainage system. This low divide had been known since pre-Columbian time by the Native Americans, who used it as the

Chicago Portage The Chicago Portage was an ancient portage that connected the Great Lakes waterway system with the Mississippi River system. This connection provided comparatively easy access from the mouth of the St. Lawrence River on the Atlantic Ocean to the R ...

to cross from the

drainage to the

basin drainage. The

was cut across that divide in the 1840s. In an attempt to better drain sewage and pollution in the Chicago River, the flow of the river had already been reversed in 1871 when the Illinois and Michigan Canal was deepened enough to reverse the river's flow for one season. A plan soon emerged to again cut through the ridge and reverse the flow permanently carrying wastewater away from the lake, through the Des Plaines and

Illinois Illinois ( ) is a U.S. state, state in the Midwestern United States, Midwestern United States. It borders on Lake Michigan to its northeast, the Mississippi River to its west, and the Wabash River, Wabash and Ohio River, Ohio rivers to its ...

rivers, to the Mississippi River and the

Gulf of Mexico The Gulf of Mexico () is an oceanic basin and a marginal sea of the Atlantic Ocean, mostly surrounded by the North American continent. It is bounded on the northeast, north, and northwest by the Gulf Coast of the United States; on the southw ...

. In 1889, the

Illinois General Assembly The Illinois General Assembly is the legislature of the U.S. state of Illinois. It has two chambers, the Illinois House of Representatives and the Illinois Senate. The General Assembly was created by the first state constitution adopted in ...

created the Sanitary District of Chicago (SDC) to carry out the plan. After four years of turmoil during construction, Isham Randolph was appointed Chief Engineer for the newly formed Sanitary District of Chicago and resolved many issues circulating around the project. While the canal was being built, permanent reversal of the

was attained in 1892, when the Army Corps of Engineers further deepened the Illinois and Michigan Canal. One of the issues for Randolph to resolve was a strike of about 2000 union workers, centered in Lemont and Joliet. On June 1, 1893, quarrymen went out to protest a wage cut, an action that also drew in 1200 canal workers. Reports describe 400 quarrymen marching along the length of the canal project on June 2, between Lemont and Romeo, conducting a "reign of terror" at worksites, "armed with clubs and revolvers", "almost crazed with liquor". On the 9th strikers clashed with replacement workers and local law enforcement, and Governor Altgeld called out the First and Second Regiments of the

Illinois National Guard The Illinois National Guard comprises both Army National Guard and Air National Guard components of Illinois. As of 2013, the Illinois National Guard has approximately 13,200 members. The National Guard is the only United States military force e ...

. Dozens were wounded and at least five killed: strikers Gregor Kilka, Jacob (or Ignatz) Ast, Thomas Moorski, Mike Berger, and 17-year-old bystander John Kluga. The strike was settled by the 15th. The new Chicago Sanitary and Ship Canal, linking the south branch of the Chicago River to the Des Plaines River at Lockport, and in advance of an application by the Missouri Attorney General for an injunction against the opening, opened on January 2, 1900. However, it was not until January 17 that the complete flow of the water was released. Further construction from 1903 to 1907 extended the canal to Joliet, as the SDC wanted to replace the previously built Illinois and Michigan Canal with the Chicago Sanitary and Ship Canal. The rate of flow is controlled by the Lockport Powerhouse, sluice gates at

Chicago Harbor Generally, the Chicago Harbor comprises the public rivers, canals, and lakes within the territorial limits of the City of Chicago and all connecting slips, basins, piers, breakwaters, and permanent structures therein for a distance of three miles ...

and at the O'Brien Lock in the

Calumet River The Calumet River is a system of 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 ...

, and also by pumps at Wilmette Harbor. Two more canals were later built to add to the system: the

North Shore Channel 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. Its water is generally tak ...

in 1910, and the Calumet-Saganashkee Channel in 1922. Construction of the Ship and Sanitary Canal was the largest earth-moving operation that had been undertaken in North America up to that time. It was also notable for training a generation of engineers, many of whom later worked on the

Encyclopædia Britannica Online An encyclopedia is a reference work or compendium providing summaries of knowledge, either general or special, in a particular field or discipline. Encyclopedias are divided into articles or entries that are arranged alphabetically by artic ...

br>Chicago Sanitary and Ship Canal
In 1989, the Sanitary District of Chicago was renamed the Metropolitan Water Reclamation District of Greater Chicago.

Diversion of water from the Great Lakes

The Chicago Sanitary and Ship Canal is designed to work by taking water from Lake Michigan and discharging it into the Mississippi River watershed. At the time of construction, a specific amount of water diversion was authorized by the

United States Army Corps of Engineers The United States Army Corps of Engineers (USACE) is the military engineering branch of the United States Army. A direct reporting unit (DRU), it has three primary mission areas: Engineer Regiment, military construction, and civil wo ...

(USACE) and approved by the

Secretary of War The secretary of war was a member of the U.S. president's Cabinet, beginning with George Washington's administration. A similar position, called either "Secretary at War" or "Secretary of War", had been appointed to serve the Congress of the ...

, under provisions of various

Rivers and Harbors Act Rivers and Harbors Act may refer to one of many pieces of legislation and appropriations passed by the United States Congress since the first such legislation in 1824. At that time Congress appropriated $75,000 to improve navigation on the Ohio an ...

s; over the years however, this limit was not honored or well regulated. While the increased flow more rapidly flushed the untreated sewage, it also was seen as a hazard to navigation, a concern to USACE in relation to the level of the Great Lakes and the

St. Lawrence River The St. Lawrence River (, ) is a large international river in the middle latitudes of North America connecting the Great Lakes to the North Atlantic Ocean. Its waters flow in a northeasterly direction from Lake Ontario to the Gulf of St. Lawren ...

, from which the water was diverted. Litigation ensued from 1907, which eventually saw states downstream of the canal siding with the sanitary district and those states upstream of Lake Michigan with Canada siding against the district. The litigation was eventually decided by the

Supreme Court In most legal jurisdictions, a supreme court, also known as a court of last resort, apex court, high (or final) court of appeal, and court of final appeal, is the highest court within the hierarchy of courts. Broadly speaking, the decisions of ...

in '' Sanitary District of Chicago v. United States'' in 1925, and again in ''

Wisconsin v. Illinois ''Wisconsin v. Illinois'', 278 U.S. 367 (1929), also referred to as the Chicago Sanitary District Case, is an opinion of the Supreme Court of the United States which held that the equitable power of the United States can be used to impose positiv ...

'' in 1929. In 1930, management of the canal was turned over to the United States Army Corps of Engineers. The Corps of Engineers reduced the flow of water from Lake Michigan into the canal, but kept it open for navigation purposes. Today, diversions from the Great Lakes system are regulated by an international treaty with Canada, through the

International Joint Commission The International Joint Commission () is a bi-national organization established by the governments of the United States and Canada under the Boundary Waters Treaty of 1909. Its responsibilities were expanded with the signing of the Great L ...

, and by governors of the Great Lakes states.

Pollution of the canals

Most local sewers in the Chicago area were built over 100 years ago, before wastewater treatment existed. They were designed to drain sanitary flow and a limited amount of stormwater directly into the river. If intercepting sewers and the

(MWRD) water reclamation plants reach capacity during heavy rain, the local sewer continues to drain, or “overflow,” to a waterway, thus causing concern for pollution. However, the MWRD’s Tunnel and Reservoir Plan (TARP) has worked to decrease the

combined sewage overflow A combined sewer is a type of gravity sewer with a system of pipes, tunnels, pump stations etc. to transport sewage and urban runoff together to a sewage treatment plant or disposal site. This means that during rain events, the sewage gets dilute ...

(CSOs) and nearly eliminated them in the Calumet Area River System. Since operationalizing the tunnels in 2006, combined sewage overflow events have been reduced from an average of 100 days per year to 50. Since 2015, when Thornton Reservoir came online, MWRD claims that overflow events have been "nearly eliminated." TARP captures and stores combined stormwater and sewage that would otherwise overflow from sewers into waterways in rainy weather. This stored water is pumped from TARP to water reclamation plants to be cleaned before being released to waterways. MWRD claims that the improved water quality has led to increasingly diverse and healthy populations of fish.

Asian carp and the canal

On November 20, 2009, the Corps of Engineers announced a single sample of DNA from Asian carp had been found above the electric barrier constructed in the canal in an attempt to prevent carp from migrating into the

. The

silver carp The silver carp or silverfin (''Hypophthalmichthys molitrix'') is a species of freshwater cyprinid fish, a variety of Asian carp native to China and eastern Siberia, from the Amur River drainage in the north to the Xi Jiang River drainage in ...

, also known as the flying carp, displace native species of fish by filter feeding and removing the bottom of the food chain. It migrated through the

system, and could make its way into the

, through the man-made canal. Carp were introduced to the U.S. with the blessing of the

Environmental Protection Agency Environmental Protection Agency may refer to the following government organizations: * Environmental Protection Agency (Queensland), Australia * Environmental Protection Agency (Ghana) * Environmental Protection Agency (Ireland) * Environmenta ...

(EPA) in the 1970s to help remove algae from catfish farms in Arkansas. They escaped the farms. On December 2, 2009, the Chicago Sanitary and Ship Canal closed, as the EPA and the

Illinois Department of Natural Resources The Illinois Department of Natural Resources (IDNR) is the code department of the Illinois state government that operates the state parks and state recreation areas, enforces the fishing and game laws of Illinois, regulates Illinois coal mines ...

(IDNR) began applying a fish poison,

rotenone Rotenone is an odorless, colorless, crystalline isoflavone. It occurs naturally in the seeds and stems of several plants, such as the jicama vine, and in the roots of several other members of the Fabaceae. It was the first-described member of the ...

, in an effort to kill Asian carp north of Lockport. Although no Asian carp were found in the two months of commercial and electrofishing, the massive

fish kill The term fish kill, known also as fish die-off, refers to a localized mass mortality event, mass die-off of fish populations which may also be associated with more generalized mortality of aquatic life.University of Florida. Gainesville, FL (200 ...

did yield a single carp. On December 21, 2009,

Michigan Attorney General The attorney general of the State of Michigan is the fourth-ranking official in the U.S. state of Michigan. The officeholder is elected statewide in the November general election alongside the governor of Michigan, governor, Lieutenant Governor of ...

Mike Cox filed a lawsuit with the

seeking the immediate closure of the Chicago Sanitary and Ship Canal to keep Asian carp out of

. The state of Illinois and the Corps of Engineers, which constructed the Canal, are co-defendants in the lawsuit. In response to the Michigan lawsuit, on January 5, 2010,

State Attorney General

Lisa Madigan Lisa Murray Madigan (born July 30, 1966) is an American lawyer and politician. A member of the Democratic Party (United States), Democratic Party, she served as Illinois Attorney General, Attorney General of the U.S. state of Illinois from 2003 t ...

filed a counter-suit with the Supreme Court requesting that it reject Michigan's claims. Siding with the State of Illinois, both the Illinois Chamber of Commerce and the

American Waterways Operators The American Waterways Operators, is the national trade association for the U.S. tugboat, towboat and barge industry. For more than 60 years AWO has promoted the contribution of the domestic waterways transportation industry to the U.S. economy. ...

have filed affidavits, arguing that closing the Chicago Sanitary and Ship Canal would upset the movement of millions of tons of vital shipments of

iron ore Iron ores are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron oxides and vary in color from dark grey, bright yellow, or deep purple to rusty red. The iron is usually found in the f ...

coal Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other Chemical element, elements, chiefly hydrogen, sulfur, oxygen, and nitrogen. Coal i ...

grain A grain is a small, hard, dry fruit (caryopsis) – with or without an attached husk, hull layer – harvested for human or animal consumption. A grain crop is a grain-producing plant. The two main types of commercial grain crops are cereals and ...

and other cargo, totaling more than $1.5 billion a year, and contribute to the loss of hundreds, perhaps thousands of jobs. However, Michigan along with several other Great Lakes states argue that the sport and commercial fishery and tourism associated with the fishery of the entire Great Lakes region is estimated at $7 billion a year, and impacts the economies of all Great Lakes states and Canada. On January 19, 2010, the U.S. Supreme Court rejected the request for a preliminary injunction closing the canal. In August 2011, the United States Court of Appeals also rejected the preliminary injunction.

References

External links

*A History from the Chicago Public Librar

(However this credits Rudolph Hering, not Isham Randolph with the project.)

including a 26 stanza poem written by Isham Randolph to Admiral Dewey on the opening of the canal *
History and Heritage of Civil Engineering – Reversal of the Chicago RiverGraph of Lakes Michigan and Huron water levels since 1860Evaluation of the Potential for Hysteresis in Index-Velocity Ratings for the Chicago Sanitary and Ship Canal Near Lemont, Illinois

United States Geological Survey The United States Geological Survey (USGS), founded as the Geological Survey, is an agency of the U.S. Department of the Interior whose work spans the disciplines of biology, geography, geology, and hydrology. The agency was founded on Mar ...

{{DEFAULTSORT:Chicago Sanitary And Ship Canal Canals in Illinois Ship canals Water supply and sanitation in the United States Canals opened in 1900 Canals on the National Register of Historic Places in Illinois Buildings and structures on the National Register of Historic Places in Chicago Buildings and structures on the National Register of Historic Places in Cook County, Illinois Historic districts in Chicago Illinois waterways Interbasin transfer Transportation buildings and structures in Chicago Transportation buildings and structures in DuPage County, Illinois Transportation buildings and structures in Will County, Illinois Lockport, Illinois United States Army Corps of Engineers Historic American Engineering Record in Illinois Historic Civil Engineering Landmarks Metropolitan Water Reclamation District of Greater Chicago