Kakadu National Park

Kakadu National Park is in the Northern Territory of Australia, 171 km southeast of Darwin.

Kakadu National Park is located within the Alligator Rivers Region of the Northern Territory of Australia. It covers an area of 1,980,400 ha (4,894,000 acres),[1] extending nearly 200 kilometres from north to south and over 100 kilometres from east to west. It is the size of Israel, about one-third the size of Tasmania, or nearly half the size of Switzerland. The Ranger Uranium Mine, one of the most productive Uranium mines in the world, is contained within the park.

The name Kakadu comes from the mispronunciation of ‘Gagudju’ which is the name of an Aboriginal language spoken in the northern part of the Park. Kakadu is ecologically and biologically diverse.

Aboriginal people have occupied the Kakadu area continuously for at least 40 000 years. Kakadu National Park is renowned for the richness of its Aboriginal cultural sites. There are more than 5000 recorded art sites illustrating Aboriginal culture over thousands of years. The archaeological sites demonstrate Aboriginal occupation for at least 20 000 and possibly up to 40 000 years.


The cultural and natural values of Kakadu National Park were recognised internationally when the Park was placed on the UNESCO World Heritage List. This is an international register of properties that are recognised as having outstanding cultural or natural values of international significance. Kakadu was listed in three stages: Stage 1 in 1981, Stage 2 in 1987, and the entire Park in 1992.


Approximately half of the land in Kakadu is Aboriginal land under the Aboriginal Land Rights (Northern Territory) Act 1976 and most of the remaining land is currently under claim by Aboriginal people. The areas of the Park that are owned by Aboriginal people are leased by the traditional owners to the Director of National Parks to be managed as a national park. The remaining area is Commonwealth land vested under the Director of National Parks. All of Kakadu is declared a national park under the Environment Protection and Biodiversity Conservation Act 1999.


The Aboriginal traditional owners of the Park are descendants of various clan groups from the Kakadu area and have longstanding affiliations with this country. Their lifestyle has changed in recent years, but their traditional customs and beliefs remain very important. About 500 Aboriginal people live in the Park; many of them are traditional owners. All of Kakadu is jointly managed by Aboriginal traditional owners and the Australian Government’s Department of the Environment and Water Resources through a division known as Parks Australia. Park Management is directed by the Kakadu Board of Management.


Kakadu is located in the tropics, between 12° and 14° south of the Equator. The climate is monsoonal, characterised by two main seasons: the dry season and the rain season. The ‘build up’ describes the transition between the dry and the rain.During the dry season (from April/May to September), dry southerly and easterly trade winds predominate. Humidity is relatively low and rain is unusual. At Jabiru, the average maximum temperature for June-July is 32 °C.During the 'build up' (October to December) conditions can be extremely uncomfortable with high temperatures and high humidity. However 'build up' storms are impressive and lightning strikes are frequent. In fact the Top End of Australia records more lightning strikes per year than any other place on earth. At Jabiru the average maximum temperature for October is 37.5 °C.

The rain season (January to March/April) is characterised by warm temperatures and, as one would expect, rain. Most of the rain is associated with monsoonal troughs formed over Southeast Asia, although occasionally tropical cyclones produce intense heavy rain over localised areas. At Jabiru the average maximum temperature for January is 33 °C.Annual rainfall in Kakadu National Park ranges from 1,565 mm in Jabiru to 1,300 mm in the Mary River region.


Most non Aboriginal people really only refer to the rain and dry seasons, but Aboriginal people Bininj/Mungguy identify as many as six seasons in the Kakadu region:
* Gunumeleng - mid-October to late December, pre-monsoon storm season with hot weather and building thunderstorms in the afternoons
* Gudjewg - from January to March, monsoon season with thunderstorms, heavy rain, and flooding; the heat and humidity generate an explosion of plant and animal life
* Banggerreng - April, the "knock 'em down storm" season where floodwater recedes but violent, windy storms knock down grasses
* Yegge - from May to mid-June, relatively cool with low humidity, the Aboriginal people historically started burning the woodlands in patches to 'clean the country' and encourage new growth for grazing animals
* Wurrgeng - from mid-June to mid-August, the cold weather season with low humidity; most creeks stop flowing and the floodplains quickly dry out
* Gurrung - from mid-August to mid-October, hot dry weather with ever shrinking billabongs.

Periods of torrential rain and long dry spells mean that Kakadu can change its appearance according to the season, so is a place deserving of more than one visit.

Kakadu's flora is among the richest in northern Australia with more than 1700 plant species recorded which is a result of the Park's geological, landform and habitat diversity. Kakadu is also considered to be one of the most weed free national parks in the world.


The distinctly different geographical areas of Kakadu have their own specialised flora. The environment referred to as ‘the Stone Country’ features ‘resurrection grasses’ that are able to cope with extreme heat and long dry spells followed by periods of torrential rain. Monsoon forests often develop in the cool moist gorges dissecting the stone country. The southern hills and basins support several endemic plants that are only found in Kakadu such as Eucalyptus koolpinensis near Jarrangbarnmi (Koolpin Gorge). Lowland areas form a large proportion of Kakadu National Park and are mainly covered in eucalypt-dominated open woodland with the ground layer consisting of a large range of grasses including spear grass, sedges and wildflowers.

The floodplains, which are inundated for several months each, year feature sedges such as spike rush as well patches of freshwater mangroves (itchy tree), pandanus and paper bark trees (Melaleuca). Varieties of water lilies, such as the blue, yellow and white snowflake, are commonly found in these areas. Estuaries and tidal flats are populated with varieties of mangroves (39 of the 47 Northern Territory species of mangrove occur in Kakadu) that are important for stabilising the coastline. Mangroves serve as feeding and breeding grounds for many fish species including the barramundi.


On the tidal flats behind the mangroves, hardy succulents (samphire), grasses and sedges grow. Isolated pockets of monsoon forest grow along the coast and river banks. These forests contain several impressive trees, among them the banyan fig, which can be recognised by its large, spreading aerial roots, and the kapok tree, which has a spiny trunk, large, waxy red flowers and pods full of cotton-like material.

The diverse environments of Kakadu National Park support an astonishing array of animals, a number of which have adapted to particular habitats. Some animals in the Park are rare, endangered, vulnerable or endemic. Responding to the extreme weather conditions experienced in the Park, many animals are active only at particular times of the day or night or at particular times of the year.

About 60 mammal species—marsupials and placental mammals—have been recorded in the Park. Most of them inhabit the open forest and woodlands and are nocturnal, making it difficult to see them. Others, such as wallabies and kangaroos (macropods), are active in the cooler parts of the day and are easier to see. However, recent surveys have revealed a disturbing decline of nearly all mammal species throughout Kakadu, including once common and widespread species such as northern quolls. Kakadu’s many habitats support more than 280 species of birds, or about one-third of Australia’s bird species. Some birds range over a number of habitats, but many are found in only one environment.

To date, 117 species of reptiles have been recorded in Kakadu. Being cold blooded, these animals rely on heat from an external source such as the sun to regulate their body temperature. This is not to say that reptiles are active only during the day; in fact, few snakes can withstand Kakadu’s midday heat and most are active at night.


There are six main landforms in Kakadu National Park: the Arnhem Land plateau and escarpment complex, known as the stone country; the outliers; the lowlands; the southern hills and basins; the floodplains; and the tidal flats. Each landform has its own range of habitats. Kakadu’s varied landscapes and the habitats they contain are features that contributed to its listing as a World Heritage Area.

Most of Kakadu was under a shallow sea approximately 140 million years ago, with the escarpment wall formed from sea cliffs and Arnhem Land from a flat plateau above the sea. Currently the escarpment rises 330 metres above the plateau and extends approximately 500 kilometres along the East edge of the park and on into Arnhem Land. The escarpment varies from near vertical cliffs in the Jim Jim Falls area to isolated outliers and stepped cliffs in the North.

Kakadu National Park is a major tourist attraction in Australia’s north. Visitation in 2005 was 202,000. Kakadu’s dramatic landscape, Aboriginal cultural significance and diverse and abundant wildlife are what visitors are drawn to. There are many beautiful waterfalls and gorges within the Park that are popular with visitors such as Maguk, Gunlom, Twin Falls and Jim Jim Falls.

Kakadu National Park has some of the best examples of Aboriginal rock art in Australia. The sites of Nourlangie and Ubirr are among the most visited locations in the Park. It is possible to view some of Kakadu’s diverse wildlife at places like Yellow Water Billabong, Cooinda on board a wildlife cruise or at Mamukala Wetlands or Anbangbang Billabong. The Kakadu region is one of the world’s best for bird watching as approximately 30 percent of Australia’s bird species can be seen here.