Due to heavy rains and flooding, a mudslide in the capital city of Freetown, Sierra Leone, killed over 300 people with that number expected to rise in the coming days. It is estimated that over 6,000 people have been displaced. Due to previous mapping efforts in Freetown during the Ebola crisis, the most heavily impacted areas have been thoroughly mapped. Continued rains could cause additional flooding and displacement in the coming days and weeks.
The Missing Maps project aims to map the most vulnerable places in the world (affected by humanitarian crises: disease epidemics, conflict, natural disasters, poverty, environmental crises). Building on HOT's disaster preparedness projects, the Missing Maps tasks facilitate pre-emptive mapping of priority countries to better facilitate disaster response, medical activities and resource allocation when crises occur.
Created by Giblet - Updated - Priority: medium
- Entities to Map
- Changeset Comment
- added buildings #hotosm-project-3421 #missingmaps #redcross #sierraleone #sierraleoneflooding #AMZN When saving your work, please leave the default comment but add what you actually mapped, for example "added buildings and a residential road".
[imagery url available only after accepting the license]
Access to this imagery is limited by the DigitalGlobe Satellite EULA license agreement.
You need to review and acknowledge the agreement.
*Please use Digital Globe Premium Imagery for this project
- Please accurately outline all the buildings you can find. The outline should be for the full size of the building even if it is partly covered by trees in the imagery.
- Most buildings are rectangular, after drawing the outline, use the 's' key in the iD web editor to "square" the corners.
- For circular buildings there is the 'o' key in the iD editor to create a circular structure.
- Many buildings are very close, but do not actually touch each other, try to map them close to each other without letting them connect or share nodes with each other, roads or residential area outlines. In the iD web editor, holding down the "alt" key will keep nodes of "snapping" to each other and accidentally connecting.
- In the iD web editor, the first time you map a building you will use the "Building Features" category and then at the top of the list select "Building" again, this is the most generic building tag we can use as we almost never can tell the more specific use of any building from imagery alone.
Roads and Other Features
Your are not requested to map anything other than buildings in this project. This is due to the fact that most roads in the area have already been mapped. However if you choose to, please consult the broader OSM Wiki for mapping and tagging guidance.