Question: Which opened first, the Whitewater Canal or Lock No. 1, North New River Canal?

Context paragraphs:
Industrial Canal Lock: The Inner Harbor Navigation Canal Lock—commonly known as Industrial Canal Lock or simply Industrial Lock—is a navigation lock in New Orleans.  It connects the Lower Mississippi River to the Industrial Canal and other sea-level waterways.  Because it is shorter and narrower than most modern locks on the Mississippi River System, the 1920s vintage lock has become a bottleneck between the nation's two highest-tonnage waterways—the Mississippi and the Gulf Intracoastal Waterway.

New River Coalfield: The New River Coalfield is located in northeastern Raleigh County and southern Fayette County, West Virginia.  Commercial mining of coal began in the 1870s and thrived into the 20th century.  The coal in this field is a low volatile coal, and the seams of coal that have been mined include Sewell, Fire Creek, and Beckley.  This is very high quality bituminous coal rated at approximately 15,000 btu .  The New River coalfield is named after the north flowing New River.  Over 60 coal towns were once located there, supported by independent commercial districts at Beckley, Oak Hill, Mount Hope, and Fayetteville.  By the 21st century many coal camps had partially or completely returned to nature.  These company towns were located along Dunloup (Loup) Creek, Laurel Creek, White Oak Creek, lower Piney Creek, and, of course, the New River.  The mainline of the Chesapeake and Ohio Railway ran right through the center of this coalfield, with spurs branching off in many directions, and rail yards were maintained at Quinnimont, Raleigh, and Thurmond, WV.  The Virginian Railway's main line also passed through the western side of the field as well.  Companies such as the New River Company, New River & Pocahontas Consolidated Coal Co., and Mary Frances Coal Co. were the largest operators in the New River Coalfield, but there were many smaller ones as well.  These companies recruited native born whites, immigrants from Southern and Eastern Europe, and African-Americans from the South to work in their coal mines and railroads.  The mines began to close down after World War II and today there are very few active coal mines in the field.  The New River Gorge is now the domain of the National Park Service and they have done what their budget allows to preserve the coal heritage of the area.

Whitewater Canal: The Whitewater Canal, which was built between 1836 and 1847, spanned a distance of seventy-six miles and stretched from Lawrenceburg, Indiana on the Ohio River to Hagerstown, Indiana.

Black River Canal: The Black River Canal was a canal built in northern New York in the United States to connect the Erie Canal to the Black River.  The canal had 109 locks along its 35 mi length.  Remains of several of the canal's former locks are visible along New York State Route 12 near Boonville.

New River (Broward County, Florida): The New River is a tidal estuary in South Florida, United States.  The river is connected to the Everglades through a series of man made canals.  After passing through Fort Lauderdale, the river connects to the Atlantic Ocean at Port Everglades cut.  The river is entirely within Broward County and is composed from the junction of three main canals which originate in the Everglades, splitting off from the Miami Canal.  They are the North New River Canal, which flows on the north side of State Road 84 / Interstate 595; the South New River Canal, which flows on the north side of Griffin Road and the south side of Orange Drive; and a canal which flows south of Sunrise Boulevard.

Whitewater River (Great Miami River): The Whitewater River is a 101 mi southerly flowing right tributary of the Great Miami River in southeastern Indiana and southwestern Ohio in the United States.  It is formed by the confluence of two forks, the West Fork and East Fork.  The name is a misnomer, as there is no true white water on the river.  However, there are many rapids due to the steep gradient present - the river falls an average of 6 ft/mile .  The gradient rendered upstream navigation impossible, and in the mid-nineteenth century resulted in the construction of the Whitewater Canal paralleling the river from north of Connersville, Indiana, to the Ohio River.

Black River Canal Warehouse: Black River Canal Warehouse is a historic canal warehouse building located at Boonville in Oneida County, New York.  It was built in 1850 and is a 1 ⁄ -story, rectangular, wood-frame building, 28 feet by 40 feet with a gable roof.  It was built as a warehouse on the Black River Canal and used as such until the canal was abandoned in 1924.

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.

Lock No. 1, North New River Canal: Lock No. 1, North New River Canal (also known as Sewall Lock or Davie-Sewall Lock or Lock #4, North New River Canal) which opened in 1912 is a historic lock located between Davie and Plantation, Florida, United States.  It is located south of Plantation on SR 84.  On February 17, 1978, it was added to the U.S. National Register of Historic Places.

Enlarged Double Lock No. 23, Old Erie Canal: Enlarged Double Lock No. 23, Old Erie Canal is a historic Erie canal lock located at Rotterdam in Schenectady County, New York.  It was built in 1841-1842 as part of the First Enlargement.  It is built entirely of large cut limestone blocks, laid regular ashlar, and mortared with hydraulic cement.  The Northeast lock chamber is 110 ft long and 18 ft wide; the Southwest lock chamber is 220 ft long and 18 to 20 ft wide; and the Center pier is 100 ft long and 26 ft wide.  The Southwest lock chamber was expanded in 1889-1890.  Lock 23 fell into disuse after the opening of the New York State Barge Canal in 1918.  The lock chambers contain no water and the area is open as a local park.  The site was reclaimed and stabilized by local volunteers starting in 1999.  A replica of a board and batten locktender's hut was constructed between 2000 and 2003 by students from the Union College Department of Civil Engineering.

Supporting paragraphs: Whitewater Canal Lock No. 1, North New River Canal
Answer: Whitewater Canal