question: Is the Orleans Canal or Illinois and Michigan Canal longer?
answer: Illinois and Michigan Canal
context: Title: Will County Historical Society Headquarters
  Passage: The Will County Historical Society Headquarters is a historic building in Lockport, Illinois, United States, originally known as the Illinois and Michigan Canal Office Building.  It served as the headquarters of the Canal Commission of the Illinois and Michigan Canal from 1836 until 1871, when control of the canal was transferred to the state.
  Title: Illinois River
  Passage: The Illinois River is a principal tributary of the Mississippi River, approximately 273 mi long, in the U.S. state of Illinois.  The river drains a large section of central Illinois, with a drainage basin of 28756.6 sqmi .  The drainage basin extends into Wisconsin and Indiana.  This river was important among Native Americans and early French traders as the principal water route connecting the Great Lakes with the Mississippi.  The French colonial settlements along the river formed the heart of the area known as the Illinois Country.  After the construction of the Illinois and Michigan Canal and the Hennepin Canal in the 19th century, the role of the river as link between Lake Michigan and the Mississippi was extended into the era of modern industrial shipping.  It now forms the basis for the Illinois Waterway.
  Title: New Basin Canal
  Passage: The New Basin Canal, also known as the New Canal and the New Orleans Canal, was a shipping canal in New Orleans, Louisiana, from the 1830s through the 1940s.
  Title: 17th Street Canal
  Passage: The 17th Street Canal is the largest and most important drainage canal in the city of New Orleans.  Operating with Pump Station 6, It moves water into Lake Pontchartrain.  The canal, along with the Orleans Canal and the London Avenue Canal, form the New Orleans Outfall Canals.  The 17th Street Canal forms a significant portion of the boundary between the city of New Orleans and Metairie, Louisiana.  The canal has also been known as the Metairie Outlet Canal and the Upperline Canal.
  Title: Morris Wide Water Canal Boat Site
  Passage: The Morris Wide Water Canal Boat Site is an archaeological site in Morris, Illinois, which contains the remains of seven canal boats sunk in the Illinois & Michigan Canal.  The boats were likely built between 1865 and 1885 and were abandoned at the site between 1895 and 1915, after which they gradually sank.  All of the boats were flat-bottomed with a rounded bow and stern.  The hulls of the boats are in good condition and provide insight into construction methods used in canal boats of the period.  As no fully intact Illinois canal boats from the period survive, the remains of these boats are some of the few pieces of physical evidence which can be used to study canal travel during the era.  The remains were first discovered in 1978 after a storm exposed the part of the canal bed containing the boats; another storm in 1996 again exposed the boats and allowed further studies to be conducted on them.
  Title: Orleans Canal
  Passage: The Orleans Canal is a drainage canal in New Orleans, Louisiana.  The canal, along with the 17th Street Canal and the London Avenue Canal, form the New Orleans Outfall Canals.  The current version of the canal is about 2 km long, running along the up-river side of City Park, through the Lakeview and Lakeshore neighborhood, and into Lake Pontchartrain.  It is part of the system used to pump rain water out of the streets of the city into the Lake.  The Canal has also been known as the Orleans Avenue Canal, the Orleans Outfall Canal, the Orleans Tail Race, and early on, the Girod Canal,
  Title: Illinois and Michigan Canal
  Passage: The Illinois and Michigan Canal connected the Great Lakes to the Mississippi River and the Gulf of Mexico.  In Illinois, it ran 96 mi from the Chicago River in Bridgeport, Chicago to the Illinois River at LaSalle-Peru.  The canal crossed the Chicago Portage and helped establish Chicago as the transportation hub of the United States, before the railroad era.  It was opened in 1848, its function was largely replaced by the wider and shorter Chicago Sanitary and Ship Canal in 1900 and it ceased transportation operations with the completion of the Illinois Waterway in 1933.
  Title: One Canal Place
  Passage: One Canal Place, located at 365 Canal Street in the Central Business District of New Orleans, Louisiana, is a 32-story, 440 ft -tall skyscraper.  The building contains The Shops at Canal Place and is attached to the Westin New Orleans Canal Place hotel, with which it shares a parking garage.
citations: Orleans Canal Illinois and Michigan Canal