Newport Flood Study GIS

A number of GIS layers were provided by Council to assist with the study. This included:\r\n•\tAerial Photography – provides 2014 ortho-rectified aerial imagery at a 0.5 metre pixel size;\r\n•\tCadastre – provides property boundary polygons;\r\n•\tStormwater Pipes – Provides alignments, lengths and diameters of stormwater pipes;\r\n•\tStormwater Pits – Provides locations and types of stormwater pits/inlets;\r\n•\tRoad Centrelines – Provides locations and names of roadways within the study area\r\nEach allotment within the catchment was assigned an ERP classification for the 20% AEP, 5% AEP, 1% AEP and PMF. This was completed using the TUFLOW model results, digital elevation model and a road network GIS layer.