At The Point
Observations carried out 1.1 km form and in sight of the degree confluence. The site was a little over 3km south of the Qld-NSW border, on cultivated land, in the catchment of the Barwon River.
Point information and photo's: Col Grant 2008. Author's email: email@example.com
WITHIN THE DEGREE SQUARE
Climate: The closest weather station is at Mungindi in NSW (052020), which is 10km east of the confluence, and has an elevation of 160m.
The highest temperature that has been recorded was 46.5°C in January 1990, and the lowest was -4.4°C in July 1966. The greatest rainfall recorded in a year was 1074mm in 1950, and the least was 168.1mm in 1902.
These and other climate statistics for Mungindi can be found at: Australian Bureau of Meteorology, http://www.bom.gov.au/climate/averages/tables/cw_052020_All.shtml
Extremes of Nature: The area sometimes experiences extreme throughout parts the year, with Mungindi having an average of 51 days annually that have maximum temperatures equal to or over 35°C. The hottest months are December to February, all of which experience over 10 days on average with temperatures equal to or over 35°C.
Since 1906 there have been no cyclones to pass within 50 km of the degree confluence, but 6 have passed within 200 km. Cyclone information for this area and all of Australia can be found at the Australian Bureau of Meteorology website, http://www.bom.gov.au/cgi-bin/silo/cyclones.cgi
Cyclone tracks within 200 km of the confluence, 1906 to 2006 (Bureau of Meteorology web site)
The population of the degree square at the 2011 national census was 742. Much of the population is likely to live in Mungindi.
The reason for the apparent significant increase may, in part, be due to changes in the census collection boundaries.
The Barwon River forms the border between Qld (right bank) and NSW (left bank). Red River Gums line both sides of the river. Major Thomas Mitchell passed by here in 1846. Upstream the river is called the Macintyre. Downstream the Barwon meets up with the Darling. Thus this area is part of the Murray-Darling basin. There are ever increasing agricultural demands on the border rivers, made more complicated by declining drought flows.
Considerable large scale developments including expansion of the cotton industry, appear to be well under way adjacent to the Barwon and Weir Rivers between the towns of Talwood (Qld) and Mungindi (NSW).
Farm dams, irrigation channels and drains are all present along the flat landscape.
More to come
Edited by: Hayley Freemantle