Question: Which is longer, Indiana Harbor and Ship Canal or Leiper Canal?

Context paragraphs:
I-Pass: I-Pass (stylized as I-PASS) is the electronic toll collection system utilized by the Illinois State Toll Highway Authority (ISTHA) on its toll highways that launched on November 18, 1993, with the opening of Interstate 355 (Veterans Memorial Tollway).  It uses the same transponder as the E-ZPass system used in the Northeastern US and the Indiana Toll Road, along with the future Indiana State Road 912 (Cline Avenue) Indiana Harbor and Ship Canal bridge.

Manchester Ship Canal Police: Manchester Ship Canal Police (also known as Manchester Dock Police and the Port of Manchester Police) was a police force in the United Kingdom that was responsible for policing the Manchester Ship Canal.  It was maintained by the Manchester Ship Canal Company between 26 December 1893, when the canal opened, and 31 January 1993.

Manych Ship Canal: The Manych Ship Canal is a canal system between the basins of the Sea of Azov, Black Sea, and Caspian Sea.  Proposals are being considered to expand the system into a larger Eurasia Canal system.  The canal would be a multipurpose water-resources system and an important part of the national transport system serving internal and international Caspian oil traffic, with huge economic potential for the region.  A proposed design would enlarge the Manych Ship Canal to a depth of 6.5 m and width of 80 m with traffic capacity for more than 75 million tons per year.  This proposed Eurasia Canal would allow passage of vessels with a freight-carrying capacity of up to 10,000 tons.  Russia's unique geographic location and transportation infrastructure does not correspond economically to the current logistics of Russian and foreign trade.

Leiper Canal: Early in the 19th century, the Leiper Canal built in 1828-29 during the middle of the American canal age ran about 3 mi along Crum Creek in Delaware County to its mouth in Eastern Pennsylvania's Delaware Valley carrying its owners quarried products to docks on the Delaware River tidewater until 1852.

Indiana Harbor and Ship Canal: The Indiana Harbor and Ship Canal is an artificial waterway on the southwest shore of Lake Michigan, in East Chicago, Indiana which connects the Grand Calumet River to Lake Michigan.  It consists of two branch canals, the 1.25 mile (2 km) Lake George Branch and the 2 mile (3 km) long Grand Calumet River Branch which join to form the main Indiana Harbor Canal.  The Indiana Harbor Canal also functions as a harbor and runs 1.4 miles (2 km) before reaching the Indiana Harbor which connects to Lake Michigan.  In 2002, Indiana Harbor was the 45th busiest harbor in the United States, handling almost 13,300,000 short tons (12,000,000 metric tons) of cargo.  Foreign trade accounted for only 500,000 short tons (450,000 metric tons) of that.  Indiana Harbor is not a state-managed harbor, and it is maintained by the Chicago District of the U.S. Army Corps of Engineers, as authorized by the Rivers and Harbors Act of 1913.

Chicago, Indiana and Southern Railroad: The Chicago, Indiana and Southern Railroad (reporting mark CI&S) is a defunct railroad which operated in the states of Illinois and Indiana during the early 20th century.  The CI&S formed in 1906 from the consolidation of the two other railroads: the Indiana, Illinois and Iowa Railroad and the Indiana Harbor Railroad.  The new railroad also owned the capital stock of the Danville and Indiana Harbor Railroad.  The stock of the new company itself was wholly owned by the Lake Shore and Michigan Southern Railway and the Michigan Central Railroad, both of which were part of the New York Central system.  A 1907 report called the CI&S a "tributary to the Lake Shore."  The railroad operated two lines: a north-south line between Indiana Harbor (East Chicago, Indiana) and Danville, Illinois, and a line from the Spring Valley coalfields at Seatonville, Illinois, to South Bend, Indiana.  Together the two lines controlled 301 mi of track.  In 1914 the CI&S was one of several railroads consolidated to form the modern New York Central Railroad.

Grand Calumet River: The Grand Calumet River is a 13.0 mi 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 1500 cuft per second of water into the lake.  A smaller part of the flow, at the river's western end, enters the Calumet River and ultimately drains into the Illinois and ultimately the Mississippi River.

Whiting Refinery: The Whiting Refinery is an oil refinery located on the southwestern shore of Lake Michigan and the Indiana Harbor Ship Canal and operated by BP.  The facility is primarily located in Whiting, Indiana, USA, though portions of the 1400 acre complex span into the neighboring cities of Hammond and East Chicago.

Ship canal: A ship canal is a canal especially intended to accommodate ships used on the oceans, seas or lakes to which it is connected, as opposed to a barge canal intended to carry barges and other vessels specifically designed for river and/or canal navigation.  Because of the constraints of accommodating vessels capable of navigating large bodies of open water, a ship canal typically offers deeper water and higher bridge clearances than a barge canal of similar vessel length and width constraints.

Indiana Harbor East Breakwater Light: The Indiana Harbor East Breakwater Light is an active aid to navigation that marks the end of a breakwater on the east side of the Indiana Harbor and Ship Canal where it enters Lake Michigan.

Supporting paragraphs: Indiana Harbor and Ship Canal Leiper Canal
Answer: Leiper Canal