AT THE POINT
OBSERVATIONS at SITE 29S-141E
Date of visit: 25/9/2008 Time of visit: 1:45pm
Weather: Temp: 29degC, Atmospheric pressure: 1019hPa, Relative humidity: 25%
Clear sky, strong E to SE breeze.
Landscape: Rocky portion of eastern side of Grey Range (Bygrave Range to north). Much of surface covered by dark red-brown ‘gibbers', conglomerate and sandstone boulders, and angular black stones. Clayey red soil and dried grass tussocks between stones. Creeks are generally easterly-flowing into the Bulloo Overflow. The closest stream is several hundred metres to the east, with well-spaced shrubs and trees growing in the wide creek bed. To the north and south, flat-topped erosional residuals (ie breakaways or jump ups) are visible. Highest point in vicinity of confluence is 227m, about ¾ km to the north. To the east and west are stony rises that the Wild Dog Fence maintenance track crosses. Adjacent to the track at confluence is a line of tall poles supporting a single telephone wire.
Looking North: View of Bygrave Range (part of Grey Range), including highest point in immediate area. Wild Dog Fence approximately 100m to north. Stony ground surface.
Looking East: Dry creek nearby. Extensive undulating stone-covered plain, low uplands in distance.
Looking South: Dry creek nearby. Extensive undulating stone-covered plain, upland area (tableland and breakaways) in distance.
Looking West: Gently rising stone-covered surface. Flat-topped upland area in distance. Very few trees or shrubs visible.
Confluence marking: No obvious evidence left by previous visitors to this point.
Point information & photos: Col Grant 2008 (Author's email: firstname.lastname@example.org)
IN TE DEGREE SQUARE
Location: SW Queensland, on the border with NSW. The confluence is located very near to the eastern boundary of Sturt National Park (NSW).
Name: Degree square named after Warri Gate, 7 ½ km west of degree confluence. The gate is on the Wild Dog Fence, which runs a short distance north of, and parallel to, the Qld-NSW border.
Elevation: 166m (indicated by GPS)
Access: By high-clearance 4WD, driving west from Hungerford along the Wild Dog Fence maintenance track (permit required).
Observations carried out: on southern side of Wild Dog Fence at exact degree confluence (on Qld-NSW border). Location adjacent to maintenance track which crosses the Grey Range.
View Photo essay HERE.
View Photo essay HERE
Climate: The closest representative weather station is at the Tibooburra Post Office , which has an elevation of 183m.
The highest temperature recorded was 47.6°C in January 1973, and the lowest was -2.5°C in June 1982. The greatest rainfall recorded in a year was 755.4 mm in 1974, and the lowest was 47.9 mm in 1919. These and other climate statistics for Tibooburra can be found at: Australian Bureau of Meteorology, http://www.bom.gov.au/climate/averages/tables/cw_046037_All.shtml
Extremes of Nature: Since 1906 there have been no cyclones to pass within 50 km of the degree confluence since 1906, but three have passed within 200 km despite the area's inland location. 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 area can experience extreme heat throughout some of the year, with Tibooburra having an average of 74 days annually with maximum temperatures equal to or over 35°C. With a low annual rainfall and only 32 days on average a year, the area is also among the driest in Australia.
The population of the degree square is probably less than 20.
Sturt National Park
Sturt NP runs along the southern side of the Qld-NSW border. Named after explorer Charles Sturt, it is a significant park in them of arid landforms, ecology and history-heritage. Sturt passed by here in 1845.
Emus occupy much of the continent, from arid inland plains to the coast. They are flightless birds, often seen in family groups or flocks.
Emu's on Sturt National Park
The main border crossing of this degree square connects Noccundra (Qld) with Tibooburra (NSW). This area is quite desolate and the road is rough. The gate must be shut as it allows access through the Wild Dog Fence. Originally built to keep rabbits out of Queensland, it now serves as border fence and to keep dingoes out of sheep grazing area of NSW.
Compiler: Col Grant
Edited by: Hayley Freemantle
More to come