Play with Global Flood Maps – New SCALGO Website Launched

A long time in the making, we finally launched the new website for SCALGO a few days ago. The new website has product descriptions and lots of easy to read information about our technology and I hope that it can inspire LIDAR users to get more out of their huge LIDAR datasets. After all, it is a shame to spend millions in flight time and equipment and then not use the point cloud optimally because the data is too big to handle.

One of the things I like about our new site is our mapping example which is built on top of Google Maps using our own custom server for our data. Unfortunately we don’t have the rights to show some of the very detailed LIDAR-derived models we have worked with. However, we have also played with the full SRTM model, and we show two different examples online. In the first you can play with global flood maps by controlling the sea-level and discover what parts of the world gets flooded. Unlike most other similar computations available online, this is not done by simply intersection the raster with a horizontal plane at the water level and marking everything underneath this plane as flooded – doing so would ignore the effect of many features in the terrain (e.g. dikes). Additionally, the computation is done so that we can show arbitrary sea-levels, and not just levels in increments of e.g. 10cm. In the other computation you can play with flow accumulation, where water falls on the terrain and runs downstream, forming rivers and smaller tributaries.  Note that the resolution of the SRTM model is relatively coarse so dikes and other small natural barriers are not always reflected as they are missing in the data. You can read more about these computations here. The computations were performed using our newly released SCALGO Hydrology and SCALGO Simplify packages.



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