Question: The third largest inland port in Australia during the great river boat era of the mid-19th century is west and north-west to an area in a county in New South Wales that has what River as it's north-west boundry?

Context paragraphs:
Wilcannia: Wilcannia is a small town located within the Central Darling Shire in north western New South Wales, Australia.  This was the third largest inland port in the country during the great river boat era of the mid-19th century.  At the 2011 census , Wilcannia had a population of 604.

Port of Huntington Tri-State: The Port of Huntington Tri-State, centered on the Ohio River in Huntington, West Virginia, is the largest inland port in the United States.  It is the largest river port in the state of West Virginia and the 15th-largest in the United States as of 2012.  Included in the port's area is 100 miles of the Ohio River from the mouth of the Scioto River in Portsmouth, Ohio to the northern border of Gallia County, Ohio, 9 miles of the Big Sandy River, and 90 miles of the Kanawha River.  The United States Army Corps of Engineers' 1953 Ohio River Navigation Modernization Program sited the Greenup Locks and Dam project as an early priority so that its pool could serve the Port of Huntington Tri-State.  It exceeded Pittsburgh in 1953 as the busiest port on the waterway.

Mount View, New South Wales: Mount View, New South Wales is a rural locality located in the Hunter Region wine region in New South Wales Australia.  It is located Between Cessnock and Wollombi and is a part of the City of Cessnock local government area.  It has ideal climate, soil, and temperature for viticultural pursuits, which have been practiced here since the mid-19th century.  The road from Cessnock to Mount View provides access to the Great North Walk, and to lookouts with excellent views of the Hunter Region.

Washington, Louisiana: Washington is a village in St. Landry Parish, Louisiana, United States.  The population was 964 at the 2010 census.  It is part of the Opelousas–Eunice Micropolitan Statistical Area.  Washington was the largest inland port between New Orleans and St. Louis for much of the 19th century.

Port of Liège: The Port of Liège is a Belgian inland port in Liège at the Meuse river and at the Albert Canal in the heart of Europe.  Liège is the third largest inland port in Europe after Duisburg and Paris.  It also has direct links to Antwerp and Rotterdam via its canals.  Stretching over a distance of 26 kilometers and comprising 32 port areas, it covers 3.7 square kilometers.

Werunda County: Werunda County is one of the 141 Cadastral divisions of New South Wales.  The Darling River is the north-western boundary.  It includes Poopelloe Lake, and the area to the east and south-east of Wilcannia.

Hartz-Booth: The Hartz-Booth fireboat is a thirty-six foot boat operated by the City of Huntington, West Virginia Fire Department for emergency responses (firefighting and rescue) on the Ohio River and its tributaries in the Port of Huntington, West Virginia, United States, which is the largest inland port in the United States.

Port of Nanjing: The Port of Nanjing () is located in Nanjing, Jiangsu Province, China, and is the largest inland port in the world (depending on how you classify the ports in the Yangtze Delta), with throughput reaching 191 million tons of cargo in 2012.  Nanjing Port has a long history reaching back to A.D 229, when it became a major seaport.  It is situated in the lower reaches of the Yangtze River, just before the start of the Yangtze Delta.  The Port has authority over 208 km of Yangtze River shoreline, 110 km in the North Shore and 98 km in the South Shore.  As of 2010, it operated six public ports and three industrial ports.

Wagga Wagga: Wagga Wagga ( ; informally called Wagga) is a major regional city in the Riverina region of New South Wales, Australia.  Straddling the Murrumbidgee River, with an urban population of 55,820 people, Wagga Wagga is the state's largest inland city, and is an important agricultural, military, and transport hub of Australia.  The ninth fastest growing inland city in Australia, Wagga Wagga is located midway between the two largest cities in Australia–Sydney and Melbourne–and is the major regional centre for the Riverina and South West Slopes regions.

Gainsborough, Lincolnshire: Gainsborough is a town in the West Lindsey district of Lincolnshire, England.  The population of the town was 22,117 at the 2015 census.  It is situated 18 mi north-west from the city and county town of Lincoln, and on the River Trent.  At one time it served as an important port with trade downstream to Hull, and was the most inland port in England, being more than 55 miles (90 km) from the North Sea.

Supporting paragraphs: Werunda County Wilcannia
Answer: Darling River