Contours from 1880 Contour plan of portion of the City of Melbourne, Victoria Australia, Department of Crown Lands and Survey.
Historical map georectified (https://mapwarper.prov.vic.gov.au/maps/4331) and hosted at Public Records Office Victoria (https://mapwarper.prov.vic.gov.au). Original historical map available from State Library Victoria (http://search.slv.vic.gov.au/permalink/f/1o9hq1f/SLV_VOYAGER861624)
Elevations in this KML document are to the low water mark of the river Yarra, benchmarked on N.W. abatement of Princes Bridge, circa 1880.