28°S 148°E Boolba – Queensland by Degrees

AT THE POINT

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Looking north

Looking west

 

Looking south

Looking east

 

Location: The point is located on private property about 2.5 km south of the Balonne Highway half way between St George and Bollon. St George is about 55 km east of the point and Bollon about 51 km to the west. The photos were taken alongside the Balonne Highway at its nearest point to the confluence point. The actual point is yet to be visited.

Landscape: Flat country with an elevation of around 200 m ASL. Roadside vegetation is low woodland with mulga (Acacia aneura) and various eucalypts dominant with a sparse ground cover of grasses and herbs. The soils are sandy. Vegetation at the actual point is probably pasture.

Point information and photos: Jane Terrell-Payne, Les Payne 2008 and Col Grant 2008 (Author's email:  cgrant@vnc.qld.edu.au).

gps

GPS

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Ground Surface

IN THE DEGREE SQUARE

The Country: The country throughout the square is relatively flat. Elevations range from around 200 m in the north to 150 m in the south. The geology Cainozoic sand, soils and gravels.

Much of the native vegetation across the square has been removed and replaced by pasture for sheep and more recently cattle grazing. What native vegetation that remains is mostly mulga woodland with taller eucalypts including Coolibah (Eucalyptus coolabah). Riparian stands of River Red Gum (Eucalyptus camaldulensis) are found along the drainage channels.

trees

Native cypress pines grow in a long wide band west of the eastern ranges. Often they are associated with other species such as eucalyptus (eg ironbark).
The timber from these attractive trees has considerable character, with a yellow colour and darker knots. Excellent household furniture is made from their wood.

The Climate: The area has a grassland climate that is persistently dry. The Bollon climate station to the west is representative of the area.

Bollon Mary Street (site 044010) 1907-2008

 

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Year

Mean max
(ºC)

35.5

34.3

32.0

27.8

23.0

19.5

19.0

21.4

25.6

29.6

32.7

35.0

28.0

Mean min
(ºC)

21.5

21.0

18.2

13.2

8.7

5.7

4.2

5.6

9.2

13.7

17.2

19.9

13.2

Mean rain
(mm)

63.1

53.2

48.5

31.5

32.7

29.7

27.5

22.5

24.1

35.3

40.7

50.8

459.5

There is a great degree of variability on both temperature and rainfall. The highest temperature on record was 47.0°C in January 1973 and the lowest recorded temperature was -5.5° in June 1975. Annual rainfall has ranged from a high of 1158.7mm in 1956 to a low of 180.5mm in 1946.

Extremes of Nature: Records of very large floods in the Balonne River extend back as far as 1890. Major floods occur regularly, on average every two years. These floods can result from the penetration of decaying cyclones this far inland. For example, in 1964 TC Audrey which had formed in the Gulf of Carpentaria passed about 20 km to the east of the square. The most dangerous climatic extremes are heatwave and drought.

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

The National Earthquake Database maintained by Geoscience Australia records three earthquakes within the degree square. Two were small (around ML 2.5), however the third which occurred on 28 December 2005 measured ML 4.1. It was located about 23 km south-west of the confluence point. No damage was reported.

The Indigenous Story: The area is the traditional lands of the Kooma people.

MORE DETAILS NEEDED.

European Exploration and Settlement:

INFORMATION REQUIRED

Today: 

The total population of the degree square at the 2011 national census was approximately 400. This has been in decline for at least a decade as the rural industries that dominate the area have been under drought and other hardships.

MEASURE

1996

2001

2006

2011

Total population

526

566

452

401

Total males

289

327

264

218

Total females

237

239

188

183

Under 5 years

54

49

34

36

65 years and over

51

40

51

54

Indigenous

11

21

6

6

mona

Property of Mona

The property of Mona is South-west of the degree confluence. Sheep and cattle are the main sources of income. The owners grow many of their own vegetables. Children study through distance education. The area has no apparent drainage pattern. However, owners generally make use of bore water, which run across the properties in long bore drains.

Site Summary:

Location

On private property 2.5km south of the Balonne Highway
55 km west of St George

Access

By road

Terrain

Flat

Catchment

Balonne-Condamine part of the Murray-Darling system

Geology & soils

Sand

Vegetation

Native vegetation of mulga and eucalypt woodland

Land use

Cattle grazing

Climate

Grassland persistently dry

Population in degree square

452

Infrastructure

Balonne Highway and numerous rural roads

National Parks

Thrushton National Park

Compilers: Jane Terrell-Payne and Les Payne with additional material from Ken Granger 2008 and Col Grant.

Edited by: Hayley Freemantle

No references