A national-scale vulnerability assessment of seawater intrusion: Seawater intrusion vulnerability indexing - quantitative

Fresh groundwater stored in Australian coastal aquifers constitutes an important resource for humans and the natural environment. However, many Australian coastal aquifers are vulnerable to seawater intrusion (SWI) - the landward encroachment of seawater into coastal aquifers. SWI can significantly degrade water quality and reduce freshwater availablility. In response to the threat posed by SWI, Geoscience Australia and the National Centre of Groundwater Research and Training, in collaboration with state and territory water agencies, have undertaken a national-scale assessment of the vulnerability of coastal aquifers to SWI. Project funding was provided through the Rising National Water Standards program, which was administered by the National Water Commission. This report describles the SWI quantitative vulnerability indexing component of the project and should be considered as a complement to the summary and technical reports that form additional products of the project.