Instruct: Given a question, retrieve relevant passages that answer the question.
Query: How long is the Castlereagh River in New South Wales?
Estimates of the length of the course of the Castlereagh River from its commencement to its mouth vary from 541 kilometres (336mi),[2] 549km,[3] and 566km.[1] Over its course it drops over 600m.
Greenbah is located at 31°33′54″S 149°19′04″E on the opposite bank of the Castlereagh River from Binnaway, New South Wales.
Nandi Parish is a bounded rural locality and civil parish of Gowen County, in New South Wales.
The parish is on the headwaters of the Castlereagh River. The topography is dominated by Shawns Creek, the Castlereagh River and the Nandi Hills. The only town of Nandi Parish is Coonabarrabran.
Biamble is on the Castlereagh River between Binnaway, New South Wales and Mendoran, New South Wales. 
The Parish is on the banks of the Castlereagh River and the main settlement of the parish is Gulargambone, New South Wales.
The Parish is on the Castlereagh River, east of Gilgandra, New South Wales to the west. The main economic activity of the parish is agriculture.
The parish is on the Nepean River between Penrith, New South Wales and Richmond, New South Wales in the foothills of the Great Dividing Range.
Coonamble Shire is a local government area in the Orana region of New South Wales, Australia. The Shire is located adjacent to the Castlereagh Highway and the Castlereagh River.
Castlereagh is a suburb of Sydney, in the state of New South Wales, Australia. Castlereagh is 67 kilometres north-west of the Sydney central business district, in the local government area of the City of Penrith and is part of the Greater Western Sydney region.
Caigan Parish is on the opposite side of the Castlereagh River from the railway siding of Neilrex, New South Wales. The nearest town is Mendooran and the economy is based in agriculture.
The Parish is on the Wallumburrawang Creek a tributary of the Castlereagh River, and the nearest settlement of the parish is Gilgandra, New South Wales to the west. The main industry is agriculture.
Castlereagh was an electoral district of the Legislative Assembly in the Australian state of New South Wales originally created in 1904, partly replacing Coonamble and named after the Castlereagh River. In 1920, with the introduction of proportional representation, it was absorbed into Wammerawa, along with Mudgee and Liverpool Plains. It was recreated in 1927 and abolished in 1991.
This district consisted roughly of the area between the Castlereagh River to the north and the Macquarie River to the south. Graham Douglas Hunter was the long term Commissioner for the Bligh district.
Binnaway is a small town located on the Castlereagh River in central western New South Wales near the larger centre of Coonabarabran, which is about 35 kilometres to the north. In 2016, the town had a population of 425 people. The road linking these two towns closely follows the meandering Castlereagh River. There are many pleasant areas to stop beside the road and on the river banks to have a picnic. Binnaway is also located near the similarly sized small town of Mendooran. Following local government amalgamation, the town is now located in the Warrumbungle Shire Council area which is headquartered at Coonabarabran.
Burrendah, New South Wales is a bounded rural locality of Gilgandra Shire and a civil parish of Gowen County, a county of New South Wales.
The Parish is on the Wallumburrawang Creek a tributary of the Castlereagh River, and the nearest settlement of the parish is Gilgandra, New South Wales to the west. The main economic activity of the parish is agriculture.
The civil parish is on the Castlereagh River and the town of Mendooran, New South Wales is on the opposite bank.
The Parish is on the junction of the Wallumburrawang Creek and the Castlereagh River, and the nearest settlement of the parish is Gilgandra, New South Wales to the west. The main economic activity of the parish is agriculture
Dilly Parish, New South Wales is a bounded rural locality of Gilgandra Shire and a civil parish of Gowen County, a cadastral division of New South Wales.
The Parish is on the Wallumburrawang Creek a tributary of the Castlereagh River, and the nearest settlement of the parish is Tooraweenah, New South Wales to the north.
The Parish is on the Wallumburrawang Creek a tributary of the Castlereagh River, and the nearest settlement of the parish is Tooraweenah, New South Wales to the north.
The Castlereagh River is located in the central–western district of New South Wales, Australia. It is part of the Macquarie-Castlereagh catchment within the Murray–Darling basin and is an unregulated river, meaning no dams or storage have been built on it to control flows.[3] On a map of NSW, the Castlereagh has a distinctive appearance among the north-western rivers for its fish-hook-like shape: from upstream in the north at its confluence with the Macquarie River it extends southwards to a hook-shape, flattened-out at the base, which curves to the right (east and northwards) through to the tip of the hook in the Warrumbungle Mountains at the river's source.
The Parish is on the banks of the Castlereagh River and the main settlement of the parish is Gulargambone, New South Wales.
The Parish is on the Tunderbrine Creek a tributary of the Castlereagh River and the nearest settlement of the parish is Tooraweenah, New South Wales to the south.
The parish is on the junction of the Castlereagh River and Yallagal Creek and on the Ulamambra Creek. The only town of the parish is Ulamambri, New South Wales and the nearest main town is Coonabarabran.
Binnaway Parish is a civil Parish of Napier County, New South Wales, located on the Castlereagh River in central western New South Wales. 
The parish is on the Castlereagh River, between Coonabarabran and Binnaway, New South Wales.