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63-776: The Seaview Range , part of the Great Dividing Range , is a mountain range located west of Ingham in North Queensland , Australia. Much of the range is covered by rainforest and parts of it are protected in the Girringun National Park and the Wet Tropics of Queensland world heritage area. The range is the headwaters for the Burdekin River , the Herbert River and contains Wallaman Falls . The Seaview Range

126-437: A common task in environmental engineering and science. In a closed drainage basin, or endorheic basin , rather than flowing to the ocean, water converges toward the interior of the basin, known as a sink , which may be a permanent lake, a dry lake , or a point where surface water is lost underground . Drainage basins are similar but not identical to hydrologic units , which are drainage areas delineated so as to nest into

189-449: A drainage basin, and there are different ways to interpret that data. In the unlikely event that the gauges are many and evenly distributed over an area of uniform precipitation, using the arithmetic mean method will give good results. In the Thiessen polygon method, the drainage basin is divided into polygons with the rain gauge in the middle of each polygon assumed to be representative for

252-540: A drainage boundary is referred to as watershed delineation . Finding the area and extent of a drainage basin is an important step in many areas of science and engineering. Most of the water that discharges from the basin outlet originated as precipitation falling on the basin. A portion of the water that enters the groundwater system beneath the drainage basin may flow towards the outlet of another drainage basin because groundwater flow directions do not always match those of their overlying drainage network. Measurement of

315-581: A multi-level hierarchical drainage system . Hydrologic units are defined to allow multiple inlets, outlets, or sinks. In a strict sense, all drainage basins are hydrologic units but not all hydrologic units are drainage basins. About 48.71% of the world's land drains to the Atlantic Ocean . In North America , surface water drains to the Atlantic via the Saint Lawrence River and Great Lakes basins,

378-467: A water source for important reservoirs and water supply projects such as the Upper Nepean Scheme , Snowy Mountains Scheme and Warragamba Dam . The Bradfield Scheme has been mooted as a way to transport water from the Wet Tropics of Queensland in the coastal northeast of Far North Queensland via a series of Dams & Tunnels , southwest to inland dryer regions, including a tunnel through

441-729: Is only one major road crossing the highlands from north to south, the Great Alpine Road . Parts of the highlands consisting of relatively flat and, by Australian standards, well-watered land were developed for agricultural and pastoral uses. Such areas include the Atherton Tableland and Darling Downs in Queensland, and the Northern Tablelands , Southern Highlands and Southern Tablelands in New South Wales . Other parts of

504-480: Is referred to as " watershed management ". In Brazil , the National Policy of Water Resources, regulated by Act n° 9.433 of 1997, establishes the drainage basin as the territorial division of Brazilian water management. When a river basin crosses at least one political border, either a border within a nation or an international boundary, it is identified as a transboundary river . Management of such basins becomes

567-600: Is the Dead Sea . Drainage basins have been historically important for determining territorial boundaries, particularly in regions where trade by water has been important. For example, the English crown gave the Hudson's Bay Company a monopoly on the fur trade in the entire Hudson Bay basin, an area called Rupert's Land . Bioregional political organization today includes agreements of states (e.g., international treaties and, within

630-682: The African Great Lakes , the interiors of Australia and the Arabian Peninsula , and parts in Mexico and the Andes . Some of these, such as the Great Basin, are not single drainage basins but collections of separate, adjacent closed basins. In endorheic bodies of water where evaporation is the primary means of water loss, the water is typically more saline than the oceans. An extreme example of this

693-715: The Australian Alps . The central core of the Great Dividing Range is dotted with hundreds of peaks and is surrounded by many smaller mountain ranges or spurs, canyons , valleys and plains of regional significance. Some of the major plains include the High Plains of South-Eastern Australia, the Southern Highlands, the Central Highlands and Bogong High Plains of Victoria. Other tablelands considered part of

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756-622: The Calder Highway , the Western Highway , and the Murray Valley Highway traverse parts of the range. Much of the range lies within a succession of national parks and other reserves . Most of the national parks are listed below, and there are almost double that amount of state forests. In 2009 as part of the Q150 celebrations, the Great Dividing Range was announced as one of

819-584: The Eastern Seaboard of the United States, the Canadian Maritimes , and most of Newfoundland and Labrador . Nearly all of South America east of the Andes also drains to the Atlantic, as does most of Western and Central Europe and the greatest portion of western Sub-Saharan Africa , as well as Western Sahara and part of Morocco . The two major mediterranean seas of the world also flow to

882-717: The Great Australian Bight via the coastal Lake Alexandrina ; the eastern half of the Lake Eyre basin in east central Australia (the Cooper Creek and Warburton River systems in Central /western South West Queensland and eastern Far North of South Australia) drain southwestwards into the endorheic Kati Thanda–Lake Eyre ; the numerous rivers of western Cape York Peninsula in northeastern Australia ( North / Far North Queensland ) drain westwards or northwestwards directly into

945-475: The Gulf of Carpentaria . The sharp rise between the coastal lowlands and the eastern uplands has affected Australia's climate , mainly due to orographic precipitation , and these areas of highest relief have revealed an impressive gorge country. Areas to the east of the mountain range in southern NSW usually experience a Föhn effect , which is a dry wind originating from the Great Dividing Range that abruptly raises

1008-619: The Latrobe Valley and Wilsons Promontory ). Whereas on the downwind (eastern) slopes, Cooma , Omeo , Goulburn , Bowral , Bombala , Nimmitabel , and Canberra , are warmer and drier relative to altitude. Moreover, Oberon , Shooters Hill and Sunny Corner are on the crest of the ranges and thus exposed from all directions, hence their evenly spread rainfall. The main ski resorts in New South Wales, such as Thredbo Village , Perisher and Charlotte Pass , lie transitionally between

1071-583: The Liverpool Range , Mount Royal Range and the Monaro District . Whilst some of the peaks of the highlands reach respectable heights of a little over 2,000 metres (6,600 ft), the age of the range and its erosion mean that most of the mountains are not very steep, and virtually all peaks can be reached without mountaineering equipment. In some areas, such as the Snowy Mountains , Victorian Alps ,

1134-718: The Mississippi (3.22 million km ), and the Río de la Plata (3.17 million km ). The three rivers that drain the most water, from most to least, are the Amazon, Ganges , and Congo rivers. Endorheic basin are inland basins that do not drain to an ocean. Endorheic basins cover around 18% of the Earth's land. Some endorheic basins drain to an Endorheic lake or Inland sea . Many of these lakes are ephemeral or vary dramatically in size depending on climate and inflow. If water evaporates or infiltrates into

1197-781: The Nile River ), Southern , Central, and Eastern Europe , Turkey , and the coastal areas of Israel , Lebanon , and Syria . The Arctic Ocean drains most of Western Canada and Northern Canada east of the Continental Divide , northern Alaska and parts of North Dakota , South Dakota , Minnesota , and Montana in the United States, the north shore of the Scandinavian peninsula in Europe, central and northern Russia, and parts of Kazakhstan and Mongolia in Asia , which totals to about 17% of

1260-584: The Q150 Icons of Queensland for its role as a "location". Drainage basin Other terms for a drainage basin are catchment area , catchment basin , drainage area , river basin , water basin , and impluvium . In North America, they are commonly called a watershed , though in other English-speaking places, "watershed" is used only in its original sense, that of the drainage divide line. A drainage basin's boundaries are determined by watershed delineation ,

1323-579: The Scenic Rim and the eastern escarpments of the New England region, the highlands form a significant barrier. The eastern escarpment is the site of many spectacular waterfalls which were formed by rivers plunging off the tablelands. In other areas the slopes are gentle and in places the range is barely perceptible. Well known passes on the range include Coxs Gap , Cunninghams Gap , Dead Horse Gap , Nowlands Gap , and Spicers Gap . Major cities located on

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1386-559: The Shoalhaven River . Those that flow south, primarily through Victoria, include the Snowy , Cann , Tambo , Mitchell , Latrobe , Thomson , Yarra , Werribee , Hopkins and Glenelg rivers. At some high hill passes the range provides cool sites appropriate for vineyards . The engineers of early rail passages across the Great Dividing Range needed to find low sections of the range to cross, as well as suitable, "low" gradient paths up

1449-757: The South Pacific and the Tasman Sea , or southward into the Bass Strait . Rivers west of the Dividing Range drain in various westerly directions according to latitudes: the Murray–Darling basin in southeastern Australia ( Darling Downs /eastern South West Queensland , West/Central New South Wales , Northern Victoria and the Murraylands / Riverland region of southeastern South Australia ) drain southwestwards into

1512-729: The Torres Strait off the northern tip of Cape York Peninsula , running the entire length of the eastern coastline through Queensland and New South Wales , then turning west across Victoria before finally fading into the Wimmera plains as rolling hills west of the Grampians region . The width of the Range varies from about 160 km (100 mi) to over 300 km (190 mi). The Greater Blue Mountains Area , Gondwana Rainforests and Wet Tropics of Queensland World Heritage Areas are located in

1575-423: The east coast of Australia and forms the fifth-longest land-based mountain chain in the world , and the longest entirely within a single country. It is mainland Australia 's most substantial topographic feature and serves as the definitive watershed for the river systems in eastern Australia, hence the name. The Great Dividing Range stretches more than 3,500 kilometres (2,175 mi) from Dauan Island in

1638-758: The Andes. The Indian Ocean 's drainage basin also comprises about 13% of Earth's land. It drains the eastern coast of Africa, the coasts of the Red Sea and the Persian Gulf , the Indian subcontinent , Burma, and most parts of Australia . The five largest river basins (by area), from largest to smallest, are those of the Amazon (7 million km ), the Congo (4 million km ), the Nile (3.4 million km ),

1701-701: The Atlantic. The Caribbean Sea and Gulf of Mexico basin includes most of the U.S. interior between the Appalachian and Rocky Mountains , a small part of the Canadian provinces of Alberta and Saskatchewan , eastern Central America , the islands of the Caribbean and the Gulf, and a small part of northern South America. The Mediterranean Sea basin, with the Black Sea , includes much of North Africa , east-central Africa (through

1764-687: The Blue Mountains were later named after each of these men. This was the start of the development of the agricultural districts of inland New South Wales . A road was built to Blaxland by convicts within six months. Easier routes to inland New South Wales were discovered towards Goulburn to the southwest, and westwards from Newcastle . Subsequent explorations were made across and around the ranges by Allan Cunningham , John Oxley , Hamilton Hume , Paul Edmund Strzelecki , Ludwig Leichhardt and Thomas Mitchell . These explorers were mainly concerned with finding and appropriating good agricultural land. By

1827-507: The Great Divide is only a slight rise in the surrounding topography. Knowing that local Aboriginal people had already established routes crossing the range and by making use of Aboriginal walking trails, a usable ridge-top route was finally discovered by Europeans directly westward from Sydney across the Blue Mountains to Bathurst by an expedition jointly led by Gregory Blaxland , William Lawson and William Charles Wentworth . Towns in

1890-536: The Great Dividing Range are the Atherton Tableland , Canberra wine region and the Southern Tablelands . The Dandenong Ranges , Barrington Tops , Bunya Mountains , Blue Mountains , Liverpool Range , McPherson Ranges and the Moonbi Range are some of the smaller spurs and ranges that make up the greater dividing range. Other notable ranges and tablelands which form part of the Great Dividing Range include

1953-728: The Great Dividing Range into the Flinders River then a tunnel into the Torrens Creek in the White Mountains National Park then flows south into Thompson River / Cooper Creek , part of the Eyre Basin . Many other variations have been proposed. The Great Dividing Range creates the drainage basins of the Australian south-east coast drainage division and the Australian north-east coast drainage division , whose water flows to

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2016-403: The Great Dividing Range is defined by the watershed boundary between the drainage basins of river systems east (the coastal or rainward side) and west (the inland or leeward side) of it. The higher and more rugged parts of the "range" do not necessarily form part of the crest of the range, but may be branches and offshoots from it. The term "Great Dividing Range" may refer specifically to

2079-737: The Murray–Darling Basin from Victoria include the Goulburn , Mitta Mitta , Kiewa , Ovens , King , Loddon and Campaspe rivers. Rivers that flow east into the Pacific Ocean include the Annan River , Barron River , Brisbane River , Burdekin River , Burnett River , Clarence River , Daintree River , Fitzroy River , Hastings River , Hawkesbury River , Hunter River , Karuah River , Macleay River , Mary River , Pascoe River , Richmond River and

2142-510: The Range. The highest place in Australia, the 2,228 m (7,310 ft) Mount Kosciuszko , resides in the Snowy Mountains portion of southern Great Dividing Range. The Dividing Range does not consist of a single continuous mountain chain , but is rather a combined complex ( cordillera ) of mountain ranges , plateaus , hilly upland areas and escarpments with an ancient and complex geological history . The physiographic division name for

2205-598: The US, interstate compacts ) or other political entities in a particular drainage basin to manage the body or bodies of water into which it drains. Examples of such interstate compacts are the Great Lakes Commission and the Tahoe Regional Planning Agency . In hydrology , the drainage basin is a logical unit of focus for studying the movement of water within the hydrological cycle . The process of finding

2268-404: The air temperature in the lee of that mountain range and reduces atmospheric moisture. This dry wind, which elevates fire danger in the warm months, occurs because of the partial orographic obstruction of relatively damp low-level air and the subsiding of drier upper-level air in leeward of the mountains. The drier air is then heated more because of the adiabatic compression as it comes down

2331-406: The basin, it can form tributaries that change the structure of the land. There are three different main types, which are affected by the rocks and ground underneath. Rock that is quick to erode forms dendritic patterns, and these are seen most often. The two other types of patterns that form are trellis patterns and rectangular patterns. Rain gauge data is used to measure total precipitation over

2394-403: The coastal and inland regions. Many descendants of these nations still exist today, and some remain the traditional owners and custodians of their lands. After British colonisation in 1788, the ranges were an obstacle to exploration and settlement by the British settlers. Although not high, parts of the highlands were very rugged. Crossing the Blue Mountains was particularly challenging due to

2457-430: The discharge of water from a basin may be made by a stream gauge located at the basin's outlet. Depending on the conditions of the drainage basin, as rainfall occurs some of it seeps directly into the ground. This water will either remain underground, slowly making its way downhill and eventually reaching the basin, or it will permeate deeper into the soil and consolidate into groundwater aquifers. As water flows through

2520-441: The drainage area is dependent on the soil type. Certain soil types such as sandy soils are very free-draining, and rainfall on sandy soil is likely to be absorbed by the ground. However, soils containing clay can be almost impermeable and therefore rainfall on clay soils will run off and contribute to flood volumes. After prolonged rainfall even free-draining soils can become saturated , meaning that any further rainfall will reach

2583-642: The drainage basin to the mouth, and may accumulate there, disturbing the natural mineral balance. This can cause eutrophication where plant growth is accelerated by the additional material. Because drainage basins are coherent entities in a hydrological sense, it has become common to manage water resources on the basis of individual basins. In the U.S. state of Minnesota , governmental entities that perform this function are called " watershed districts ". In New Zealand, they are called catchment boards. Comparable community groups based in Ontario, Canada, are called conservation authorities . In North America, this function

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2646-401: The east coast and into the Pacific Ocean, Tasman Sea , and Bass Strait with the westerly Murray–Darling basin which flow inland, away from the coast into the interior plains. Some of the rivers which flow west of the ranges includes the Condamine River , Flinders River , Herbert River , Lachlan River , Macdonald River , Macintyre River and Namoi River . Rivers that flow north into

2709-435: The ground and along rivers it can pick up nutrients , sediment , and pollutants . With the water, they are transported towards the outlet of the basin, and can affect the ecological processes along the way as well as in the receiving water body . Modern use of artificial fertilizers , containing nitrogen (as nitrates ), phosphorus , and potassium , has affected the mouths of drainage basins. The minerals are carried by

2772-422: The ground at its terminus, the area can go by several names, such playa, salt flat, dry lake , or alkali sink . The largest endorheic basins are in Central Asia , including the Caspian Sea , the Aral Sea , and numerous smaller lakes. Other endorheic regions include the Great Basin in the United States, much of the Sahara Desert , the drainage basin of the Okavango River ( Kalahari Basin ), highlands near

2835-432: The highlands are too rugged for agriculture and have been used for forestry. Many parts of the highlands which were not developed are now included in National Parks . All of mainland Australia 's alpine areas, including its highest mountain, Mount Kosciuszko (2,228 metres or 7,310 feet AHD ), are part of this range, called the Main Range . The highest areas in southern New South Wales and eastern Victoria are known as

2898-408: The landmass is called the East Australian Cordillera . In some places the terrain is relatively flat, consisting of very low hills. Typically the highlands range from 300 to 1,600 metres (980 to 5,250 ft) in height. The mountains and plateaus, which consist of limestones , sandstone , quartzite , schists and dolomite , have been created by faulting and folding processes. The crests of

2961-477: The late 1830s, the most fertile rangelands adjacent to the mountain ranges had been explored, appropriated from the traditional inhabitants and some settled. These included the Gippsland and Riverina regions in the south, up to the Liverpool Plains and the Darling Downs in the north. Various road and railway routes were subsequently established through many parts of the ranges, although many areas remain remote to this day. For example, in eastern Victoria there

3024-676: The lee slopes, forming a rain shadow . In the cool season, the Great Dividing Range would shield much of the southeast (i.e. Sydney , Central Coast , Hunter Valley , Illawarra , the ACT , the Monaro and South Coast ) from south-westerly cold fronts that originate from the Southern Ocean , which bring chilling rains, sleet and snow to the upwind side of the ranges, such as on the western Central Tablelands , South West Slopes and Snowy Mountains regions – all which have relatively wetter winters. Upwind locations include Crookwell , Batlow , Tumut , Corryong , Bright , Beechworth , Eildon , Tolmie and those in West Gippsland (namely

3087-430: The leeward and windward side (the former town being more leeward and the latter more windward). Although they receive substantial precipitation from over the crest of the ranges, they lack the persistent cloud cover which characterises truly windward locations on the western face, which are; Cabramurra , Kiandra , Mount Buller , Falls Creek , Mount Hotham , Mount Buffalo and Mount Baw Baw . The Great Dividing Range

3150-485: The mistaken idea that the creeks should be followed rather than the ridges, and almost impenetrable, labyrinthine, sandstone mountains. The Blue Mountains actually lie to the east of the watershed that divides the Hawkesbury - Nepean system and the Murray-Darling system , the true Great Dividing Range. The watershed in this area lies to the west of Lithgow , passing near the locality of Mt Lambie and village of Capertee . There, as in some other places in New South Wales,

3213-861: The mountains on either side. Rail passages include: Many of Australia's highways such as the Alpine Way , Great Alpine Road , Snowy Mountains Highway , Hume Highway , Illawarra Highway , Northern Highway , Melba Highway , Maroondah Highway , Midland Highway , Pyrenees Highway , Sunraysia Highway , Monaro Highway , Olympic Highway , Newell Highway , Lachlan Valley Way , Barton Highway , Federal Highway , Kings Highway , Great Western Highway , Mitchell Highway , Mid-Western Highway , Castlereagh Highway , Mulligan Highway , Capricorn Highway , Cunningham Highway , Gore Highway , Flinders Highway , Gregory Highway , Peak Downs Highway , Dawson Highway , New England Highway , Golden Highway , Bruxner Highway , Gwydir Highway , Oxley Highway , Warrego Highway , Summerland Way , Waterfall Way , Thunderbolts Way ,

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3276-418: The rainfall on the area of land included in its polygon. These polygons are made by drawing lines between gauges, then making perpendicular bisectors of those lines form the polygons. The isohyetal method involves contours of equal precipitation are drawn over the gauges on a map. Calculating the area between these curves and adding up the volume of water is time-consuming. Isochrone maps can be used to show

3339-572: The responsibility of the countries sharing it. Nile Basin Initiative , OMVS for Senegal River , Mekong River Commission are a few examples of arrangements involving management of shared river basins. Management of shared drainage basins is also seen as a way to build lasting peaceful relationships among countries. The catchment is the most significant factor determining the amount or likelihood of flooding . Catchment factors are: topography , shape, size, soil type, and land use (paved or roofed areas). Catchment topography and shape determine

3402-461: The river rather than being absorbed by the ground. If the surface is impermeable the precipitation will create surface run-off which will lead to higher risk of flooding; if the ground is permeable, the precipitation will infiltrate the soil. Land use can contribute to the volume of water reaching the river, in a similar way to clay soils. For example, rainfall on roofs, pavements , and roads will be collected by rivers with almost no absorption into

3465-418: The speed with which the runoff reaches a river. A long thin catchment will take longer to drain than a circular catchment. Size will help determine the amount of water reaching the river, as the larger the catchment the greater the potential for flooding. It is also determined on the basis of length and width of the drainage basin. Soil type will help determine how much water reaches the river. The runoff from

3528-415: The time taken for rain to reach the river, while catchment size, soil type, and development determine the amount of water to reach the river. Generally, topography plays a big part in how fast runoff will reach a river. Rain that falls in steep mountainous areas will reach the primary river in the drainage basin faster than flat or lightly sloping areas (e.g., > 1% gradient). Shape will contribute to

3591-477: The time taken for runoff water within a drainage basin to reach a lake, reservoir or outlet, assuming constant and uniform effective rainfall. Drainage basins are the principal hydrologic unit considered in fluvial geomorphology . A drainage basin is the source for water and sediment that moves from higher elevation through the river system to lower elevations as they reshape the channel forms. Drainage basins are important in ecology . As water flows over

3654-403: The towns/cities located on or near the range include: The lower reaches are used for forestry, an activity that causes friction with conservationists. The range is also the source of virtually all of eastern Australia's water supply, both through runoff caught in dams, and throughout much of Queensland, through the Great Artesian Basin . Valleys along the chain of mountains have yielded

3717-432: The upland areas of the range include Canberra , Toowoomba and the outer suburbs of Sydney , Melbourne , Brisbane , Gold Coast and Cairns in north Queensland. Many towns and cities are located on the range, and also in lowland areas and foothills adjacent to the highlands. There is a strong natural history and cultural attachment to the Dividing Range region in towns and on many, sometimes remote, landholdings. Some of

3780-446: The watershed crest of the range, or to the entire upland complex including all of the hills and mountains between the east coast of Australia and the central plains and lowlands. At some places it can be up to 400 km (249 mi) wide. Notable ranges and other features which form part of the range complex have their own distinctive names. As a rule of thumb , rivers east/southeast of the Dividing Range drain directly eastward into

3843-468: The world's land. Just over 13% of the land in the world drains to the Pacific Ocean . Its basin includes much of China, eastern and southeastern Russia, Japan, the Korean Peninsula , most of Indochina, Indonesia and Malaysia, the Philippines, all of the Pacific Islands , the northeast coast of Australia , and Canada and the United States west of the Continental Divide (including most of Alaska), as well as western Central America and South America west of

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3906-545: Was first explored by Frederick Manson Bailey in 1873. It was nominated for listing on the National Heritage Register in 1978. This Far North Queensland geography article is a stub . You can help Misplaced Pages by expanding it . Great Dividing Range The Great Dividing Range , also known as the East Australian Cordillera or the Eastern Highlands , is a cordillera system in eastern Australia consisting of an expansive collection of mountain ranges , plateaus and rolling hills . It runs roughly parallel to

3969-511: Was formed during the Carboniferous period —over 300 million years ago—when Australia collided with what are now parts of South America and New Zealand. The range has experienced significant erosion since. (See Geology of Australia .) For tens of thousands of years prior to British colonisation the ranges were home to various Aboriginal Australian nations and clans. Evidence remains in some places of their traditional way of life including decorated caves, campsites and trails used to travel between

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