Question: Which canal is on the western part of the United States, the Celilo Canal or Pennsylvania and Ohio Canal?

Context paragraphs:
Pennsylvania and Ohio Canal: The Pennsylvania and Ohio Canal, also known as the P & O Canal, the Cross Cut Canal and the Mahoning Canal was a shipping canal which operated from 1840 until 1877 (though the canal was completely abandoned by 1872).  It was unique in that it served to connect canals in two states (the Ohio and Erie Canal in Ohio and the Beaver and Erie Canal in Pennsylvania) and was funded by private interests.

Junction Canal: The Junction Canal was a canal in the states of New York and Pennsylvania in the United States.  The canal was also called the Arnot Canal, after the name of its principal stockholder, John Arnot of Elmira, New York.  The canal was built and operated by a private stock company.  The canal was partly open in 1854, but the entire length was not finished until 1858.  The completed canal was 18 mi long and had 11 locks.  Then intent was to lengthen the reach of the Chemung Canal deeper into Pennsylvania in order to connect to the canal systems there.  Competition with railroads led to diminished use of the canal.  In 1865 the canal was severely damaged by a flood.  In 1866, the stock company was authorized to change its name to the "Junction Canal and Railroad Company," and work commenced in constructing a railroad on its right of way.  The canal was last used in 1871, and was then abandoned.

Ohiopyle, Pennsylvania: Ohiopyle is a borough in Fayette County, Pennsylvania, United States.  The population was 59 at the 2010 census.  While Ohiopyle has a tiny year-round population, it is often filled with tourists on the weekend, who come for the outdoor recreation opportunities at the surrounding Ohiopyle State Park, as well as the Great Allegheny Passage bicycle trail which connects with the Chesapeake and Ohio Canal towpath trail to form a continuous 335-mile off-road trail from Pittsburgh, Pennsylvania to Washington, D.C.  The borough of Ohiopyle is served by the Uniontown Area School District.

Philadelphia and Columbia Railroad: Philadelphia and Columbia Railroad (P&CR) (1834) was one of the earliest commercial railroads in the United States, running 82 mi from Philadelphia to Columbia, Pennsylvania, it was built by the Pennsylvania Canal Commission in lieu of a canal from Columbia to Philadelphia; in 1857 it became part of the Pennsylvania Railroad, and its trackage lives on today operated by Norfolk-Southern.  The Philadelphia and Columbia Railroad's western terminus was located near the former ferry site known as Wright's Ferry, in the town once of that name, but now Columbia in Lancaster County.  There the P&CR met with the Pennsylvania Canal—navigations and improvements on the Susquehanna River east bank approximately 30 mi south of Harrisburg, Pennsylvania.  Most of its right-of-way was obtained by the actions of the Pennsylvania Canal Commission which operated the railroad under the various enabling acts of the Pennsylvania legislature known as the Main Line of Public Works in support of a far sighted plan to link the whole state by canals.  With an engineering study reporting back a finding that obtaining sufficient waters to flood the intended 80+ mile canal from Philadelphia to Columbia, the Canal Commission and legislature authorized the railway on the right of way intended for the canal.

Town Creek (Potomac River): Town Creek is a 41.6 mi tributary stream of the Potomac River in the U.S. states of Maryland and Pennsylvania.  The creek is formed from the confluence of Sweet Root Creek and Elk Lick Creek, about 0.5 mi south of Buchanan State Forest in Bedford County, Pennsylvania.  Town Creek flows south along the base of Warrior Mountain into Allegany County, Maryland.  The Chesapeake and Ohio Canal crosses it at the Town Creek Aqueduct.  It empties into the Potomac about 4 mi east of Oldtown, Maryland.

Pennsylvania Canal (North Branch Division): The North Branch Division of the Pennsylvania Canal was a historic waterway that ran 169 mi along the North Branch Susquehanna River between southern New York and north-central Pennsylvania in the United States.  At its southern end, the canal connected with the West Branch Canal and the Susquehanna Division Canal at Northumberland, while on the north it connected with the Junction Canal and the New York canal system.  Built between 1828 and 1856, the North Branch Canal was part of a large transportation network that included Pennsylvania's Main Line of Public Works.

History of Panama (1977–present): On September 7, 1977, Carter and Torrijos met in Washington to sign the treaties in a ceremony that also was attended by representatives of twenty-six other nations of the Western Hemisphere.  The Panama Canal Treaty, the major document signed on September 7, abrogated the 1903 treaty and all other previous bilateral agreements concerning the canal.  The treaty was to enter into force six months after the exchange of instruments of ratification and to expire at noon on December 31, 1999.  The Panama Canal Company and the Canal Zone government would cease to operate and Panama would assume complete legal jurisdiction over the former Canal Zone immediately, although the United States would retain jurisdiction over its citizens during a thirty-month transition period.  Panama would grant the United States rights to operate, maintain, and manage the canal through a new United States government agency, the Panama Canal Commission.  The commission would be supervised by a board of five members from the United States and four from Panama; the ratio was fixed for the duration of the treaty.  The commission would have a United States administrator and Panamanian deputy administrator until January 1, 1990, when the nationalities of these two positions would be reversed.  Panamanian nationals would constitute a growing number of commission employees in preparation for their assumption of full responsibility in 2000.  Another binational body, the Panama Canal Consultative Committee, was created to advise the respective governments on policy matters affecting the canal's operation.

Celilo Canal: Celilo Canal was a canal connecting two points of the Columbia River between the states of Oregon and Washington, U.S. just east of The Dalles.

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.

Beaver and Erie Canal: The Beaver and Erie Canal, also known as the Erie Extension Canal, was part of the Pennsylvania Canal system and consisted of three sections: the Beaver Division, the Shenango Division, and the Conneaut Division.  The canal ran 136 mi north–south near the western edge of the state from the Ohio River to Lake Erie through Beaver County, Lawrence County, Mercer County, Crawford County, and Erie County, Pennsylvania.

Supporting paragraphs: Celilo Canal Pennsylvania and Ohio Canal
Answer: Celilo Canal