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UID:pretalx-foss4g-uk-2026-PRL3TZ@talks.osgeo.org
DTSTART;TZID=GMT:20261013T114500
DTEND;TZID=GMT:20261013T121500
DESCRIPTION:The Environment Agency provides openly-licensed LiDAR-derived D
 EM data covering the whole of England\, but it is difficult to access this
  data. The web interface only allows downloads of small areas\, manual bul
 k downloads produce hundreds of small TIFF files and the web map services 
 have limited visualisation options. At Rebalance Earth\, we needed easy ac
 cess to large volumes of DEM data to analyse flood risk and design nature-
 based restorations to reduce flooding. \n\nTo solve this problem\, we have
  converted the whole dataset to Cloud Optimized GeoTIFF (COG) and produced
  a STAC catalog linking to all these COG files. As the Open Goverment Lice
 nse allows redistributing the data\, we’ve been able to make the new fil
 es and STAC catalog available online\, free for anyone to use. \n\nIn this
  talk I’ll explain the benefits of cloud native geospatial data\, and ho
 w we did the conversion (including some useful tips for creating COG files
 ). I’ll then show some demos of how this data can be used – for exampl
 e to easily produce mosaics of DEM data across arbitrary areas\, to visual
 ise in custom ways on a web map (tools like titiler and titiler-pgstac) an
 d more. I’ll finish by explaining how you can connect to this dataset an
 d access it yourself.
DTSTAMP:20260821T234528Z
LOCATION:Create 1
SUMMARY:Open cloud-native access to Environment Agency DEM data using STAC 
 and COG - Robin Wilson
URL:https://talks.osgeo.org/foss4g-uk-2026/talk/PRL3TZ/
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