This polygon shape file is a 1:25,000 – 1: 50 000 environmental dataset combining 5 criteria and a larger number of sub-criteria input data sources. These are outlined in the lineage statement. The input data sets identify agreed HEV criteria for the purposes of regional strategic planning and other environmental assessment projects that require identification of significant biodiversity values. This project was undertaken by Biodiversity Conservation and Science (DPIE, EES). The Illawarra High Environmental Values dataset covers the Illawarra-Shoalhaven Regional Plan 2041 area.