30 May 2019

In the previous blog, we reported a national flood risk analytics project that has produced a set of high-resolution tiled web maps on elevation contextual layers and terrain metrics, including contours, modelled surface water flow directions and shaded relief. These web maps are also complementary to desktop, web or mobile mapping. In this blog, we demonstrate that the new contour web maps can be used to greatly enhance high-resolution imagery mapping.

The following suburbs from four states are selected, and respective results are shown in Figures 1-4 (click each figure for a full-resolution version).

  • Manly, New South Wales (urban)

  • Kuraby, Queensland (urban)

  • Kew, Victoria (urban)

  • Yallingup Siding, WA (rural)

Figure 1: Example of the new contour web maps (Manly, NSW; Zoom levels 16-20 displayed)

Figure 2: Example of the new contour web maps (Kuraby, QLD; Zoom levels 15-19 displayed)

Figure 3: Example of the new contour web maps (Kew, VIC; Zoom levels 16-19 displayed)

Figure 4: Example of new contour web maps (Yallingup Siding, WA; Zoom levels 16-19 displayed)

P.S.  All above examples are shown in a web app environment, where we have also highlighted handy on-screen digitising, editing and measurement tools (e.g. see Figures 1 and 4). If a user is interested in a wide range of location metrics (on property location and hazard/risk info), on-the-fly analysis and reporting, on top of online maps and imagery, please refer to another blog that details a new web app with all these features.


Australian tile maps on offer – subscription plans (PDF)

Processing Service – Turn Your High-quality Elevation Data into High-resolution, Beautiful Tile Maps – overview (PDF)

Applications of New National Contour Web Maps: Part 2 (Identifying Low-lying Coastal Areas) – link

Applications of New National Contour Web Maps: Part 3 (Identifying Riverine Flood-prone Areas) – link