Clarence River (New South Wales)
Grafton Bridge over the Clarence River
Bridge of the Bruxner Highway over the Clarence River at Tabulam
Grafton Bridge over the Clarence River. A section is opened to allow the waterway. ( Postcard of around 1932 The Southern Cross airplane was subsequently added to the photo. )
The Clarence River is a river in the northeast of the Australian state of New South Wales.
The Aborigines on the lower reaches of the river call this Breimba or Berrinbah.
- 3.1 rains
- 3.2 temperatures
Geography
The Clarence River is in the McPherson Range forth on the border between New South Wales and Queensland from the confluence of Boonoo Boonoo River and Maryland River and flows in a southeasterly direction to Grafton. He turns to the northeast and flows near Yamba between Bundjalung National Park and Yuraygir National Park in the Tasman Sea, a marginal sea of the Pacific Ocean.
In the lower reaches there are many islands, so for example, Woodford Iceland, Chatsworth Iceland and Iceland Harwood.
The lower part of the river valley is part of the Local Government Area Clarence Valley.
Tributaries with muzzle heights
- Boonoo Boonoo River - 248 m
- Maryland River - 248 m
- Koreelah Creek - 239 m
- Cullen's Creek - 235 m
- Bangalo Creek - 199 m
- Tooloom Creek - 197 m
- Cataract River - 176 m
- Pretty Gully - 147 m
- Duck Creek - 137 m
- Peacock Creek - 125 m
- Bottle Creek - 122 m
- Emu Creek - 119 m
- Timbarra River - 117 m
- Tabulam Rivulet - 116 m
- Dulgigin Creek - 104 m
- Washpool Creek - 92 m
- Man River - 44 m
- Main Creek - 10 m
- Orara River - 8 m
- Whiteman Creek - 5 m
- Sportsmans Creek - 3 m
- Clarence River North Arm - 0 m
- Clarence River South Arm - 0 m
- Palmers Channel - 0 m
Water management
The river system of the Clarence River is a major drainage systems on the east coast of Australia. After the river system of the Murray - Darling River and it is the largest river system in Australia south of the Tropic of Capricorn, although its water supply is only about 50 % of the Potomac River. Its catchment area is next to the similarly constructed of Hawkesbury River Australia's largest south of Bundaberg. However, for the northern part of the coast of New South Wales typical, very heavy rainfall can ensure that the water level in the river at high water the some of the largest rivers in the world is comparable.
Climate
The climate in most of the catchment area of the Clarence River is subtropical ( Cfa after effective climate classification ), although the higher areas are classified as Cfb.
Rainfall
The annual rainfall varies between 1600 mm on the coast near Yamba and 960 mm in the protected valley at Grafton. At higher altitudes the annual rainfall can reach 2000 mm on exposed slopes, but the data available do this is very sparse. Most high-altitude areas, however, do not get more rain than Grafton, but the differences from year to year are lower.
The monthly rainfall in the coastal range between 220 mm in February or March and by 70 mm in September. In the interior, where forest fires often by extreme drought - as in 1915 and 2000 - happen even values of only 40 mm can be achieved.
Temperatures
The total catchment area is quite warm. The maxima in the lower ranges vary from 27 ° C in January to 19 ° C in July. The higher areas are much cooler. The July temperatures are there between 2 ° C and 13 ° C, but in January and 25 ° C are reached.
Vegetation and Agriculture
Most of the catchment area of the Clarence River is heavily wooded. There are also remnants of subtropical and warm temperate rain forest on the entire river along. Only in the alluvial areas where the soil is less leached, there is agriculture on a larger scale. In addition to the cattle in the upland areas of sugar cane is cultivated above all in the deeper regions.
Of particular interest is the small town of Harwood on the homonymous island, where the Sperry - New Holland factory and a strange bush pub on the delta of the Clarence River lie. The city lies on the Pacific Highway, the main route from Sydney to Brisbane. There is also the sugar factory, founded in 1873, local, the oldest still operating in Australia. The sugar factory is situated directly on the river, because earlier the cane was transported from the surrounding farms on the river.
Fishing
At the Clarence River there is a large shrimp and fishing industries. Especially the Eastern freshwater cod ( Macculochella Ikei ), a threatened species that is found only in the river system of the Clarence River, and the Australian bass ( Macquaria novemaculeata ) are found in the river.