Question: This canal is known as the second longest in the world and its main tributary being the Canandaigua Outlet, what canal am i speaking of?

Context paragraphs:
Pennsylvania Canal (Delaware Division): The Delaware Division of the Pennsylvania Canal, more commonly called the Delaware Canal, runs for 60 mi parallel to the right bank of the Delaware River from the entry locks near the mouth of the Lehigh River and terminal end of the Lehigh Canal at Easton south to Bristol.  At Easton, which today is the home of The National Canal Museum, the Delaware Canal also connected with the Morris Canal built to carry anthracite coal to energy starved New Jersey industries.  Later, with a crossing-lock constructed at New Hope, the New Hope 'outlet lock' (1847) connected by Cable Ferry to a feeder navigation/canal at Bull's Island along the opposite shore from Lumberville, which ran over 22 mi south along the left bank through Trenton to Bordentown, the west end of the Delaware and Raritan Canal (1834) to New York City via New Brunswick.  as part of the solution to the United States' first energy crisis.  The Commonwealth of Pennsylvania built the Delaware canal to feed anthracite stone coal to energy-hungry Philadelphia as part of its transportation infrastructure building plan known as the Main Line of Public Works—a legislative initiative creating a collection of self-reinforcing internal improvements to commercial transportation capabilities.

Erie Canal: The Erie Canal is a canal in New York that is part of the east–west, cross-state route of the New York State Canal System (formerly known as the New York State Barge Canal).  Originally, it ran 363 mi from Albany, on the Hudson River, to Buffalo, at Lake Erie.  It was built to create a navigable water route from New York City and the Atlantic Ocean to the Great Lakes.  When completed in 1825, it was the second longest canal in the world (after the Grand Canal in China) and greatly affected the development and economy of New York, New York City, and the United States.

Ganargua Creek: Ganargua Creek, also known as Mud Creek, is a main tributary which feeds the Erie Canal and Clyde River in Wayne County, New York, United States.  The creek begins just east of the village of Victor in nearby Ontario County and meanders approximately 34 miles (55 kilometers) from west to east before emptying into the Erie Canal in the hamlet of Lyons.  Ganargua Creek is actually split into two sections as it runs concurrent with the Erie Canal for about 3 miles (5 kilometers) near the village of Palmyra.  Numerous tributaries feed Ganargua Creek along its route.

Mangalam River: Mangalam River is the main tributary of the river Gayathripuzha, which in turn is a tributary of Bharathapuzha, the second longest river in Kerala, India.  It is around 30 km long in length, with its source from Nelliyampathi forests, and passing through Vadakkencherry, Kannambra, Puthucode, Padur, etc. and joining Gayathripuzha at Plazhi in the border of Thrissur and Palakkad districts.

Flint Creek (New York): Flint Creek is a creek in the Finger Lakes region of New York State, located between Canandaigua Lake and Seneca Lake.  Flint Creek is part of the Canandaigua Lake watershed which is part of the Oswego River drainage basin, which ultimately drains to Lake Ontario.  It flows through the hamlets of Potter, Gorham, and Seneca Castle, and ends in the village of Phelps where it joins the Canandaigua Outlet.

Shakhe River: The Shakhe (Russian: Шахе ), also known as the Golovinka (Russian: Головинка ) is a river in Khostinsky and Lazarevsky City Districts of the city of Sochi, Krasnodar Krai in Russia.  It flows down the sloped of the Western Caucasus to the Black Sea.  It is 59 km long, and the area of its basin 553 km2 .  Its main tributary is the Bzych River (left).  The Shakhe is the second longest river of Sochi, next to the Mzymta River.

Dudley Tunnel: Dudley Tunnel is a canal tunnel on the Dudley Canal Line No 1, England.  At about 3172 yd long, it is now the second longest canal tunnel on the UK canal network today.  (Standedge Tunnel is the longest, at 5456 yd , and the 3931 yd Higham and Strood tunnel is now rail only).  However, since the Dudley Tunnel is not continuous this status is sometimes questioned: (the main tunnel is 2942 yd , Lord Ward's tunnel is 196 yd and Castle Mill basin is 34 yd ).

Canandaigua Outlet: The Canandaigua Outlet is a main tributary which feeds the Erie Canal and Clyde River in Wayne County, New York, United States.  It begins at Canandaigua Lake in nearby Ontario County and flows approximately 34 mi north before emptying into the Erie Canal in the hamlet of Lyons.  A number of tributaries feed the Canandaigua Outlet along its route.  It is the primary outflow for Canandaigua Lake.

Seneca Road Company: The Seneca Road Company was formed to improve the main road running west from Utica, New York, the Genesee Road, from Utica to Canandaigua and operate it as a toll road or turnpike.  The road was originally laid out in 1794 from Baggs Square in downtown Utica (then Old Fort Schuyler) at the ford of the Mohawk River and followed the Indian trail past Syracuse to Canandaigua.  Some accounts say it went to Geneva and Avon originally.  There was no City of Syracuse then.  The road became known as the Seneca Turnpike, which was 157 mi long and, at the time, the longest toll road in the state.

Pennsylvania Canal (Susquehanna Division): The Susquehanna Canal of the Pennsylvania Canal System was funded and authorized as part of the 1826 Main Line of Public Works enabling act, and would later become the Susquehanna Division of the Pennsylvania Canal under the Pennsylvania Canal Commission.  Constructed early on in America's brief canal age, it formed an integral segment of the water focused transportation system which cut Philadelphia-Pittsburgh (pre-railroad) travel time from nearly a month to just four days.  One of the system's navigations, the Susquehanna Canal/division created a mule-towed navigable channel 41 mi along the west bank of the main stem of the Susquehanna River between a lock terminus near the mouth of the Juniata Tributary River and the canal basin at Northumberland.  Meeting the West Branch Canal and the North Branch Canal at Northumberland, it formed a link between the public and private canals upriver and the main east–west Pennsylvania Canal route known as the Main Line of Public Works which was devised to connect Philadelphia to Pittsburgh, southern New York, northern Pennsylvania and Lake Erie using most of the far reaches of the Susquehanna's tributaries.

Supporting paragraphs: Canandaigua Outlet Erie Canal
Answer: Erie Canal