This tool only supports locations within Australia.
If latitude and longitude points are entered, the calculator will select the regions that the input point is contained within as the output. However, if the point lies exactly on the border of a region it will take the north-eastern most region.
If a shapefile is uploaded, the calculator will select the region of greatest intersection with the first polygon in the uploaded layer for all regions except for losses.
Islands may not have some or all of the regions.
Users need to ensure the catchment area and location are correct.