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The Theodolite Memorial commemorates John Oxley who passed this site in 1817 during the search for the inland sea. It commemorates his journey down the Lachlan River. 

Explorer and surveyor, John Oxley, was the first to discover the wide plains beyond the Lachlan River. In 1817 he led an unsuccessful expedition to trace course of the Lachlan River, discovered by George Evans, returning via Macquarie River then, proceeding north eastward discovered Castlereagh River and the rich Liverpool Plains, crossed the New England Range and found Port Macquarie. He reported that both Lachlan and Macquarie rivers terminated in swamps and `an ocean of reeds` which he suggested could be the beginning of a vast inland sea.

Note : A Theodolite is a small, tripod mounted telescope for surveying.


Address:Lachlan & Adelaide Streets, Booligal, 2711
GPS Coordinates:Lat: -33.868277
Long: 144.884275
Note: GPS Coordinates are approximate.
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Monument Type:Monument
Monument Theme:People
Actual Event Start Date:05-July-1817
Actual Event End Date:05-July-1817


Approx. Monument Dedication Date:1967
Front Inscription
                Lieut. John Oxley,
         Surveyor General of NSW
Reached This Point On 5th July 1817
Source: MA
Monument details supplied by Monument Australia - www.monumentaustralia.org.au
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