#1317 - 2015 Mariana Dam Collapse, Brazil

Entities to Map

roads, buildings, collapsed buildings, collapsed bridges, flooded areas

Changeset Comment

#hotosm-project-1317 #marianadam

When saving your work, please leave the default comment but add what you actually mapped, for example "added buildings and a residential road".

Imagery

https://a.tiles.mapbox.com/v4/jacques.o4poa4l9/{z}/{x}/{y}.jpg/?access_token=pk.eyJ1IjoiamFjcXVlcyIsImEiOiJuRm9TWGYwIn0.ndryRT8IT0U94pHV6o0yng

The satellite image post-disaster is misaligned in relation to the Bing image and to the GPS traces, so we recommend to fix the alignment of the satellite imagery before start mapping.

• The area covered by the mud must be mapped with the tag natural=mud.
• Add the tag damage=destroyed to the buildings collapsed, but do not change its geometry.
• Buildings partially collapsed can be tagged with damage=damaged.
• The roads covered by the mud, can be tagged with damage=destroyed.
• Add the tag source:damage=dam_collapse to all elements you put the "damage" key.
• Map all the buildings.

If you want to compare with imagery of the area taken on 27 October 2015, you can use that TMS layer:

https://a.tiles.mapbox.com/v4/jacques.o5020bko/{z}/{x}/{y}.jpg/?access_token=pk.eyJ1IjoiamFjcXVlcyIsImEiOiJuRm9TWGYwIn0.ndryRT8IT0U94pHV6o0yng

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