Johnston Geodec Centre - NT

  Survey Marks
Bench Mark


DEG: -25.94701 133.209702
DMS: 25º 56' 49.24" S 133º 12' 34.93" E
UTM: 53 J 7128959mN 320733mE
Altitude: 566m


Address & Contact

Mount Cavenagh Station via Kulgera. NT
Phone: N/A
Email: N/A
Web: N/A


This trigonometric survey cairn, situated about one kilometre north of Mt Cavenagh Homestead, was built by officers of the Division of National Mapping in 1965, and was once the central reference point for all Australian surveys.

It was named after Fredrick Marshall Johnston, former Commonwealth Surveyor General and the first Director of National Mapping. Today, surveys are based on the Geocentric Datum of Australia (GDA), a new and more accurate Australian coordinate system which has replaced the Australian Geodetic Datum (AGD) of which the Johnston station is a major part.

Further information on datum types and their applications is available from the geodesy pages, or from the Inter-governmental Committee on Surveying & Mapping (ICSM).
iMapPlot Reference Image


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TrekNotes Near This Place (1)



Closest Weather Station

TemperatureFeels LikeRel. HumidityDew PointPressureRainfallWind DirectionWind SpeedGusts

Closest Climatic Station

Distance from Johnston Geodec Centre 14.85km NE
Mean Max. °C36.935.532.127.922.618.918.922.026.930.233.235.0
Mean Min. °C22.021.518.
Mean Rain mm28.836.831.513.412.316.212.48.915.922.125.032.8

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