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What's new
- Sea-level rise: Download building flooding information
- Detailed contour maps and editable buildings in Workspaces
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- DHM/2015 now available nationwide
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About
What's new – Sea-level rise: Download building flooding information
Jul 3, 2024
Interested in how a particular sea-level rise affects the buildings in a region? You can now download building flood risk information for the sea-level analysis, similar to what has long been possible for the Flash Flood Map. This is available from the sea-level analysis - you simply need to select the "buildings" tap in the download window. The result is a set of building polygons in the affected area with additional fields providing the following information:
- The minimum sea-level at which any part of the building interior is in contact with the sea.
- The length of the wetted perimeter at the selected sea-level. The wettede perimeter is the part of the buildings perimeter in contact with the sea.
- The wetted area, found by combining the wetted perimeter with the depth of the water adjacent to the building to get the area of the building perimeter in contact with the sea.
- The maximum water depth along the building perimeter, as well as the coordinates where this depth can be found.
![](https://scalgo-web.imgix.net/documentation/whatsnew_sealevels-building-download.png?auto=compress%2Cformat&crop=focalpoint&cs=srgb&fit=crop&fp-x=0.5&fp-y=0.5&h=300&q=80&w=480&s=c28e78a4bf9597fa641d11632177d6df 480w)
The sea-level risk for this building near Rostock Germany, for a sea-level of 3 meter, shows that the building is first affected at a sea-level of about 2 meters, and that the 28 meters of the building perimeter is affected at a 3 meters. The maximum depth of the water adjacent to the building for this event is 15 cm.
Alongside the annotated building polygons you also get a layer of lines denoting the wetted perimeter of each building, these perimeters are annotated with the same flood-related information as the building polygons. It makes it easy to highlight the part of the buildings that are at risk of flooding.
![](https://scalgo-web.imgix.net/documentation/whatsnew_sealevels-building-download-intersections.png?auto=compress%2Cformat&crop=focalpoint&cs=srgb&fit=crop&fp-x=0.5&fp-y=0.5&h=355&q=80&w=750&s=179eea63ccd63c7a3782e4b4fee17aaf 750w, https://scalgo-web.imgix.net/documentation/whatsnew_sealevels-building-download-intersections.png?auto=compress%2Cformat&crop=focalpoint&cs=srgb&fit=crop&fp-x=0.5&fp-y=0.5&h=473&q=80&w=1000&s=222a93ad027d45cc379d358c8033af6d 1000w, https://scalgo-web.imgix.net/documentation/whatsnew_sealevels-building-download-intersections.png?auto=compress%2Cformat&crop=focalpoint&cs=srgb&fit=crop&fp-x=0.5&fp-y=0.5&h=591&q=80&w=1250&s=c755c8db128335090d6f421ec403d7f8 1250w, https://scalgo-web.imgix.net/documentation/whatsnew_sealevels-building-download-intersections.png?auto=compress%2Cformat&crop=focalpoint&cs=srgb&fit=crop&fp-x=0.5&fp-y=0.5&h=623&q=80&w=1318&s=d3414961ff391ae408acf13f5b8bc86c 1318w)
The wetted perimeters (red lines) from the building risk download shown in a GIS with background layers from the SCALGO Live WMTS server.