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Coast evolution

Monitoring of changes and damages caused on the coast after maritime temporary episodes


The ICGC, after several maritime storms, has taken the aerial photos of the affected areas that are shown in this viewer, in order to provide a tool for the location and analysis of the changes in the territory and the evaluation of the damages caused by this natural hazard.

WMS Costa

Aquesta geoinformació es pot utilitzar en línia en les teves aplicacions compatibles amb el protocol WMS

Acces to the full screen vierwe


This viewer allows the comparison of ortho-images generated from aerial photographs captured before and after storms that have affected the coast, with the aim of facilitating the evaluation of the damages caused.
The application allows to visualize and compare the following images:

  • Current orthophoto: Last conventional orthophoto published by the CGC. Pixel size 25 cm.
  • Orthophoto 2016: Conventional orthophoto published by the ICGC, with images captured in 2016. Pixel size 25 cm.
  • Temporary January 2017: Orthophoto made from aerial photographs of the entire coastline of Catalonia, captured on January 24 to assess the effects of the storm of January 21 and 22, 2017. Pixel size 25 cm.
  • Temporary March 2018: Orthophoto made from aerial photographs of the areas affected by the storm of March 1 and 2, 2018. The flight of the Badalona-Roses section was carried out on March 6 while the section of Cap de Creus was made March 16 Pixel size 25 cm.
  • Costa Febrer 2019: Orthophoto made from aerial photographs of the entire coastline of Catalonia, captured in February and with a pixel size of 15 cm.
  • Temporary April 2019: Orthophoto made from aerial photographs of the areas affected by the storm on April 19 and 23, 2019. The flight of the Ampolla-Blanes section took place on April 26 while the Blanes-Roses section was made on May 4th. Pixel size 15 cm.
  • Temporary October 2019: Orthophoto made from aerial photographs of the affected areas of the storm from October 22 to 24, 2019. The orthophoto comprises the stretch from Cambrils to Sitges and the section from Badalona to Sant Pere Pescador flown on October 27. Pixel size 25 cm.
  • Temporary December 2019: Orthophoto made from aerial photographs of the areas affected by the storm on December 4 and 5, 2019. The flight of the Castelldefels-Roses section took place on December 7 while the flight of the Delta de l 'section Ebre-El Vendrell was made on December 10. Pixel size 10 cm. (in prep.)

The comparison of the images can be done in two ways:   

  • Placing the same area on one side and another of the window; when moving one image, the other moves in the same direction.
  • By sweeping the image, using the central button, so that changes are focused on a specific point.

This tool also allows you to obtain a link to the viewer focused on a certain area, as well as with the HTML code (iframe) in case you want to insert it into your web page or blog.


This publication serves the different professionals who need to assess the damage caused by these storms in the Catalan coast

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