Contours from 1853 map of Melbourne. Sub collection of VPRS 8168 Historic Plan Collection series, Public Records Office Victoria.
Historical map georectified (https://mapwarper.prov.vic.gov.au/maps/4327) and hosted at Public Records Office Victoria (https://mapwarper.prov.vic.gov.au).
Original historical map available from http://access.prov.vic.gov.au/public/component/daPublicBaseContainer?component=daViewRecord&entityId=090fe27382741b25
Elevations in this KML document are to ordinary level of low water as indicated by a tide gauge set up at a point on the river bank on the prolongation of the line of Flinders street, circa 1853.