Coxs | |
---|---|
Etymology | In honour of William Cox [1] |
Location | |
Country | Australia |
State | New South Wales |
Region | Sydney Basin (IBRA), Central Tablelands, Blue Mountains, Macarthur |
Local government areas | Blue Mountains, Lithgow, Wollondilly |
Physical characteristics | |
Source | Gardiners Gap, within Ben Bullen State Forest |
• location | Cullen Bullen |
• elevation | 1,040 m (3,410 ft) |
Mouth | confluence with Warragamba River to form Lake Burragorang |
• elevation | 114 m (374 ft) |
Length | 155 km (96 mi) |
Basin features | |
River system | Hawkesbury-Nepean catchment |
Tributaries | |
• left | Blackheath Creek, Pulpit Hill Creek, Megalong Creek, Galong Creek, Breakfast Creek (New South Wales), Cedar Creek (New South Wales), Kedumba River |
• right | Ganbenang Creek, Long Swamp Creek, Little River (Oberon), Jenolan River, Kanangra Creek, Kowmung River, Wollondilly River, Butchers Creek |
Bridges |
|
Reservoirs | Lake Wallace, Lake Lyell, Lake Burragorang |
[2] [3] |
The Coxs River, a perennial river that is part of the Hawkesbury-Nepean catchment, is located in the Central Tablelands, Blue Mountains, and Macarthur regions of New South Wales, Australia.
The Coxs River rises in Gardiners Gap, within Ben Bullen State Forest, east of Cullen Bullen, and flows through the Megalong Valley and parts of the Greater Blue Mountains Area World Heritage Site including the Blue Mountains and Kanangra-Boyd national parks, heading generally south and then east, joined by fifteen tributaries including the Little, Jenolan, Kedumba, Kowmung, and Wollondilly rivers, before reaching its confluence with the Warragamba River to form Lake Burragorang. The river descends 931 metres (3,054 ft) over its 155-kilometre (96 mi) course. [3]
The river is impounded at Lake Wallace where it forms a cooling source for Wallerawang Power Station; at Lake Lyell where it is used for water supply for the city of Lithgow and water cooling for Wallerawang Power Station; [4] and at Lake Burragorang, a major water supply source for greater metropolitan Sydney.
At Wallerawang, the river is crossed by a stone single-track railway bridge, completed in 1870; and a replacement masonry/brick double-track railway underbridge, completed in 1923. [5] East of Wallerawang, the Great Western Highway (A32) also crosses the river, via the Jack Wilson Bridge.
To the Aboriginal peoples who lived in the area for thousands of years before white settlement, Coxs River was one of two corridors that could be used to cross the Blue Mountains, the other being the Bilpin Ridge, now the site of Bells Line of Road. Coxs River was the easiest way to cross the mountains, but this fact was unknown to the European settlers, for whom the mountains were a seemingly impassable barrier.[ citation needed ]
A former convict, John Wilson, may have been the first European to cross the Blue Mountains. Wilson arrived with the First Fleet in 1788 as a convict and was released in 1792. After this, he lived with the Aborigines and functioned as an intermediary between them and the settlers. In 1797 Wilson returned to Sydney, claiming to have explored up to a hundred miles in all directions around Sydney, including across the mountains. His descriptions and observations were generally accurate, and it is possible that he had crossed the mountains via the Coxs River corridor, guided by the Aborigines. [6]
Governor Macquarie named both Coxs River and Coxs Pass in honour of William Cox, a military officer, roadmaker and builder. [1] In 1815 the naming of the Coxs River is mentioned: [7]
The junction of these two streams a very handsome river, now called by the Governor "Cox's River" which takes its course...and empties itself into the River Nepean...
— Historical Records of Australia (Series I, Volume VIII, p. 572).
As of 2008, there were concerns about water quality in upper Coxs River. Testing carried out by researchers from the Blue Mountains Conservation Society showed that this part of the river had high levels of heavy metals including zinc, copper and manganese, 125 times more sulphate than surrounding streams and only 5% of the oxygen that fish need. The pH level, a test of acidity, was up to 1000 times higher than that of neighbouring creeks, while the river was 80 times as salty as it should be. The Sydney Catchment Authority confirmed that the test was accurate, but said the water gets safer to drink in the lower river, approaching Warragamba Dam. The Department of Environment and Climate Change stated that the contamination could be caused by Delta Electricity's Wallerawang Power Station reusing its water as a result of drought. Delta stated that it was operating within the conditions of its licence. [8]
In 2009, Dr Ian Wright of the University of Western Sydney reported that the water flowing into Coxs River contained high levels of copper, boron and other metals at "many times" the levels found upstream of the Wallerawang Power Station. High arsenic levels were found down stream of the plant, although it was diluted further downstream and was not thought to pose a risk to humans. The Blue Mountains Conservation Society was taking a case to the Land and Environment Court of New South Wales with the backing of Environment Defenders Office of New South Wales, intending to argue that Delta Electricity are polluting Coxs River. The Society also intended to challenge the New South Wales system of environmental licences. The Society's president, Tara Cameron, said: "These licences are just licences to pollute. They are just allowing the status quo and making people feel good without actually protecting the environment." [9] Journalists Ben Cubby and Erik Jensen maintained that the NSW Government had known about the pollution for over two years. [10]
A range of leisure activities are accessible adjacent to the river, including the Katoomba to Mittagong Trail, the Six Foot Track and camping.
Vehicle access is available at many locations along the river. There are several areas close to Hartley. As the river progresses towards Lake Burragorang, vehicle access is not permitted. Bushwalking is the most popular access method to the Coxs River. There are several well maintained historic walks that follow along scenic sections of the river. One of the most popular is the Six Foot Track. [11] Horse riding is another popular way to enjoy the Coxs river. There are several tour operators in the Megalong Valley that offer day and overnight rides.
The Blue Mountains National Park is a protected national park that is located in the Blue Mountains region of New South Wales, in eastern Australia. The 267,954-hectare (662,130-acre) national park is situated approximately 80 kilometres (50 mi) west of the Sydney CBD, and the park boundary is quite irregular as it is broken up by roads, urban areas and areas of private property. Despite the name mountains, the area is an uplifted plateau, dissected by a number of larger rivers. The highest point in the park is Mount Werong at 1,215 metres (3,986 ft) above sea level; while the low point is on the Nepean River at 20 metres (66 ft) above sea level as it leaves the park.
The Wingecarribee River, a perennial river that is part of the Hawkesbury–Nepean catchment, is located in the Southern Highlands region of New South Wales, Australia.
Warragamba Dam is a heritage-listed dam in the outer South Western Sydney suburb of Warragamba, Wollondilly Shire in New South Wales, Australia. It is a concrete gravity dam, which creates Lake Burragorang, the primary reservoir for water supply for the city of Sydney. The dam wall is located approximately 65 kilometres (40 mi) W of Sydney central business district, 4½ km SW of the town of Wallacia, and 1 km NW of the village of Warragamba.
Lake Burragorang is a man-made reservoir in the lower Blue Mountains of New South Wales, Australia, serving as a major water supply for greater metropolitan Sydney. The dam impounding the lake, the Warragamba Dam, is located approximately 60 kilometres (37 mi) southwest of the Sydney central business district.
The Hawkesbury River, or Hawkesbury-Nepean River a river located northwest of Sydney, New South Wales, Australia. The Hawkesbury River and its associated main tributary, the Nepean River, almost encircle the metropolitan region of Sydney. The river between Wisemans Ferry and the Pacific Ocean marks the boundary of Greater Metropolitan Sydney in the south and the Central Coast region to the north.
The Colo River, a perennial stream that is part of the Hawkesbury-Nepean catchment, is located in the Central Tablelands of New South Wales, Australia.
The Nepean River, is a major perennial river, located in the south-west and west of Sydney, New South Wales, Australia. The Nepean River, and, continuing by its downstream name, the Hawkesbury River, almost encircles the metropolitan region of Sydney.
The Wollondilly River, an Australian perennial river that is part of the Hawkesbury–Nepean catchment, is located in the Southern Tablelands and Southern Highlands regions of New South Wales. The river meanders from its western slopes near Crookwell, flowing south-east through Goulburn, turning north-east to near Bullio, flowing north-west to Barrallier, before finally heading north-easterly into its mouth at Lake Burragorang.
Warragamba is a town in New South Wales, Australia, in Wollondilly Shire. Located on the eastern edge of the Blue Mountains, Warragamba is one and a half hour's drive west of Sydney. The name Warragamba comes from the aboriginal words Warra and Gamba meaning 'water running over rocks'.
Wollondilly Shire is a periurban local government area, located on the south west fringe of the Greater Sydney area in New South Wales, Australia, parts of which fall into the Macarthur, Blue Mountains and Central Tablelands regions in the state of New South Wales, Australia. Wollondilly is seen as the transition between Regional NSW and the Greater Sydney Region, and is variously categorised as part of both. Wollondilly Shire was created by proclamation in the NSW Government Gazette on 7 March 1906, following the passing of the Local Government (Shires) Act 1905, and amalgamated with the Municipality of Picton on 1 May 1940.
The Grose River, a perennial river that is part of the Hawkesbury-Nepean catchment, is located in the Blue Mountains region of New South Wales, Australia.
The Warragamba River, a river that is part of the Hawkesbury-Nepean catchment, is located in the Macarthur region of New South Wales, Australia.
The Kedumba River, a perennial river that is part of the Hawkesbury-Nepean catchment, is located in the Blue Mountains and Macarthur regions of New South Wales, Australia.
The Kowmung River, a perennial river that is part of the Hawkesbury-Nepean catchment, is located in the Central Tablelands region of New South Wales, Australia.
The Nattai River, a perennial river that is part of the Hawkesbury-Nepean catchment, is located in the Southern Highlands region of New South Wales, Australia.
The Tonalli River, a perennial river that is part of the Hawkesbury-Nepean catchment, is located in the Blue Mountains region of New South Wales, Australia.
The Wollangambe River, an Australian perennial river that is part of the Hawkesbury–Nepean catchment within the Sydney Basin, is located in the Greater Blue Mountains Area of New South Wales.
The Little River, a perennial river that is part of the Hawkesbury-Nepean catchment, is located in the Southern Highlands region of New South Wales, Australia.
The Little River, a perennial river that is part of the Hawkesbury-Nepean catchment, is located in the Central Tablelands region of New South Wales, Australia.
The Coxs River track is a heritage-listed former walking track and road and now walking track at Cox's River Arms, Lake Burragorang/Warragamba Dam, City of Blue Mountains, New South Wales, Australia. The track is also known as the Warragamba Dam - Burragorang Valley - Wentworth Falls Track. The property is owned by the Sydney Catchment Authority, an agency of the Government of New South Wales. It was added to the New South Wales State Heritage Register on 18 November 1999.