AT THE POINT
Location: The site is in south-western Queensland, adjacent to the Qld-SA border. The area is on a gentle divide of poorly coordinated drainage between Cooper Creek (to the east) and the Diamantina River (to the west). The wider region is part of Channel Country.
Landscape: Reaching Haddon Corner from the east requires crossing two dunes. These dunes are part of a small SE-NW trending dune field adjacent to Sturt Stony Desert (the westernmost of these dunes is visible from the Corner). Spot height at Haddon Corner is 91 m (Natmap 250K Raster Maps). The summit of the nearby dune is given as 105 m.
Google Image: dune field and drainage adjacent to 26°S 141°E
IN THE DEGREE SQUARE
Climate: The closest representative weather station to the confluence is at the Birdsville Police Station. It has an elevation of 47 m, and has been recording data since 1892.
The highest temperature recorded was 49.5°C in December 1972, and the lowest was -1.7°C in June and July 1965. The greatest rainfall recorded in a year was 541.8 mm in 1916, and the least was 33.2 mm in 1913. These and other climate statistics for Birdsville can be found at: Australian Bureau of Meteorology, http://www.bom.gov.au/climate/averages/tables/cw_038002_All.shtml
Cyclone tracks within 200 km of the confluence, 1906 to 2006 (Bureau of Meteorology web site)
Extreme heat and drought are also serious issues. Records show that Birdsville experiences 113 days annually with temperatures over 35°C, 45 of which typically reach 40°C or warmer. Such extreme temperatures can cause heat stroke and death if appropriate measures are not taken such as avoiding strenuous physical effort, keeping as cool as possible and drinking lots of water. Heat waves kill more people in Australia than all other natural hazards combined. In addition, with very little rainfall and only 23 days a year on average with any rain, the area is also among the driest in Australia.
Today: The population of the degree square is less than 20.
Edited by: Hayley Freemantle
Geoscience Australia, NATMAP Raster
Geoscience Australia, Scanned 250 K Geology Maps