29°S 149°E Gregory Corner– Queensland by Degrees

At The Point

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Looking north                                                                      Looking east

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Looking south                                                                       Looking west

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.

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Point information and photo's:  Col Grant 2008. Author's email:  cgrant@vnc.qld.edu.au

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.

 

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Year

Mean max
(ºC)

35.4

34.1

31.8

27.6

23.1

19.3

18.8

21.0

25.0

28.9

32.0

24.5

27.6

Mean min
(ºC)

20.5

20.2

17.5

12.8

8.8

5.7

4.6

6.0

9.3

13.4

16.6

18.9

12.9

Mean rain
(mm)

71.9

62.9

50.3

31.2

34.8

34.0

33.4

25.6

26.6

38.2

45.2

51.3

505.6

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

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Cyclone tracks within 200 km of the confluence, 1906 to 2006 (Bureau of Meteorology web site)

Today:

The population of the degree square at the 2011 national census was 742. Much of the population is likely to live in Mungindi.

MEASURE

1996

2001

2006

2011

Total population

419

464

396

742

Total males

237

268

217

391

Total females

182

196

179

351

Under 5 years

18

48

38

57

65 years and over

18

40

39

87

Indigenous

37

50

30

55

The reason for the apparent significant increase may, in part, be due to changes in the census collection boundaries.

Barwon River

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.

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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.

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More to come

Edited by:  Hayley Freemantle