Existing vegetation surveys and mapping were reviewed and supplemented with 16 additional full floristic vegetation plots and over 230 rapid data points (RDPs). Plant Community Type (PCT) mapping was undertaken at a scale of 1:10,000 using a range of datasets.

A total of 14 unique PCTs totalling 8,007 ha of native vegetation were mapped including four Endangered Ecological Communities (EECs) listed under the NSW Threatened Species Conservation Act 1995 (TSC Act) with three of these communities also being listed under the Commonwealth Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act).

A finer level of mapping detail was provided through the delineation of structural variants of PCTs across their mapped occurrences to facilitate park management activities. A total of 15 midstorey variants were identified resulting in a total of 50 unique units which demonstrates significant variation across PCTs in Breelong and Drillwarrina National Parks. VIS_ID 4529