Georgina River

Georgina River in the catchment of Lake Eyre

The Georgina River is a river in the east of the Australian Territory Northern Territory and to the west of the state of Queensland. He is the most north-westerly of the three great rivers of the Channel Country. ( The other two are the Diamantina River and Cooper Creek. ) Only in particularly wet years reached its water to Lake Eyre.

Geography

River

The river is formed at the eastern edge of the Barkly Tableland on the border between the Northern Territory and Queensland, approximately 30 km north- west of Camooweal from the Herbert River and flows in an arc to the south of the city and west of Camooweal Caves National Park again in the Northern Territory. From the mouth of the River tendrils he turns to the southeast and again crosses the border into Queensland. There he continues to flow to the southeast, crosses under the Donohue Highway and follow it almost to the capital of this basin, Boulia. South of the city, at Breadalbane on the Diamantina Developmental Road, is the Georgina River on the Eyre Creek.

Tributaries with muzzle heights

  • Herbert River - 241 m
  • Elizabeth Creek - 239 m
  • Pring Creek - 238 m
  • Scrubby Creek - 235 m
  • Emu Creek - 232 m
  • Harvey Creek - 232 m
  • Barwidgee Creek - 231 m
  • Red Creek - 230 m
  • Wonga Creek - 229 m
  • Chester Creek - 229 m
  • Ruby Creek -228 m
  • Caroline Creek - 226 m
  • Nowranie Creek - 221 m
  • Buckley River - 207 m
  • Happy Creek - 200 m
  • Shakespeare Creek - 198 m
  • Ranken River - 197 m
  • Gidyea Creek - 190 m
  • Bybby Creek - 189 m
  • Templeton River - 182 m
  • Bull Creek - 181 m
  • Woodroffe River - 172 m
  • Racecourse Creek - 164 m
  • Sandy Creek - 163 m
  • Bannockburn Creek - 161 m
  • Fifteen Mile Creek - 157 m
  • Seventeen Mile Creek - 155 m
  • Mindylla Creek - 149 m
  • Sandy Creek - 149 m
  • Billy Creek - 148 m
  • Pigeon Creek - 145 m
  • Boundary Creek - 145 m
  • Pituri Creek - 138 m
  • Cotton Bush Creek - 131 m
  • Burke River - 130 m
  • Hamilton River - 107 m

Flushed lakes

The Georgina River flows through several water holes and lakes, most of which are also filled with water when the river is dry yourself:

  • Keribobla Waterhole - 239 m
  • Grassmere Waterhole - 234 m
  • Lake Francis - 225 m
  • Canellan Lake - 225 m
  • Walbo Waterhole - 163 m
  • Waukaba Waterhole - 162 m
  • Bakers Lagoon - 161 m
  • Tickita Waterhole - 157 m
  • Lemo Waterhole - 156 m
  • Lake Katherine - 152 m
  • Weaner Waterhole - 150 m
  • Sandy Waterhole - 148 m
  • Muire Waterhole - 146 m
  • Dip Waterhole - 146 m
  • Yanko Waterhole - 145 m
  • Budda Budda Waterhole - 144 m
  • Rabbit Waterhole - 143 m
  • Longreach Waterhole - 142 m
  • Aldeys Waterhole - 142 m
  • Midgingar Waterhole - 141 m
  • Basin Water Hole - 140 m
  • O. K. Waterhole - 137 m
  • Charles Waterhole - 135 m
  • Paravituari Waterhole - 125 m
  • Wilberderry Waterhole - 114 m
  • Hamilton Waterhole - 107 m

Hydrology

The catchment area of ​​the Georgina River covers approximately 232,000 km ², roughly comparable with the size of the State of Victoria. Because of the arid nature of the basin is the average water runoff but only about 0.7 km ³ / year, but there are such strong fluctuations in the drain that - although water flow measurements are not sufficient to provide information - let meteorological records no doubt that there are many years were without any water runoff from the entire basin (1905, 1928 and 1961 undoubtedly fall into this category, as well as probably a few others, if there were sufficient data), while up in particularly wet years, such as 1974, 1977 and 2000, the Water drain can be up to 6.28 km ³ / year and more.

Although the Georgina River is regarded as the driest of the three major rivers of the Channel Country, its water to Lake Eyre reached more frequently than that of the Diamantina River and the Cooper Creek. Some heaped waves of gravel terraces suggest that the Medieval Warm Period (800 - 1000 AD) the Lake Eyre was constantly filled with water. The significant increase in rainfall in the Northern Territory and the grazing areas in South Australia and Western Australia since the late 1960s, you could not find in Queensland, so you have to assume that an enhanced greenhouse effect in the Medieval Warm Period led to the Georgina River Lake Eyre fed regularly. However, there is little evidence for this assumption.

Provincial nature

Although a small part of the Macdonnell Ranges wild is also part of the catchment area of the Georgina River, but most of this catchment area is as flat as that of the Diamantina River, although there are low mountains in the northwest. In the western part of the basin, the soils are infertile to carry food for cattle and sheep, and a large part of this area are Aboriginesreservat. The eastern part of the basin to Boulia is very similar to the basin of the Diamantina River and Cooper Creek. It's grassy plains, whose bottoms are made of clay and are quite fertile. In wet years, they provide good fodder.

Climate

The climate in the Georgina Basin is usually slightly drier than that in the Diamantina Basin or in the Cooper Creek Basin. The average annual rainfall varies between 400 mm and 225 mm north of Camooweal in bedourie. In very dry years, only about 100 mm / year fall, while in 1974, 1977 and 2000 in many areas more than 800 mm / year and some even up to 1,000 mm / year were recorded.

Almost all of the rain falls in the summer and from May to September it is often found almost no measurable rainfall. In very wet summer months, as in January 1974 or in March 1950, the catchment area can receive up to 350 mm / month or 150 mm in a day or two.

It is usually very hot; the maximum daily temperatures in most areas of more than 225 days / year above 30 ° C. Frost is rare, but has been occasionally recorded in all areas of the basin, although the maximum daily temperatures even be around 25 ° C in June and July.

Floods

In severe floods of the Georgina River can already reach a width of 15-20 km in the upper reaches. In the lower reaches is in these cases, the width of the river at 25-30 km. The floods may last for months, which may lead to the disruption of road and rail links. The highest flood was recorded in January 1974.

Boulia, Queensland Burke River (Queensland) Town Municipality Camooweal-Caves-Nationalpark Vertisol Bedourie, Queensland
369008
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