This mail about two parallel projects that could interest you ! ;-)
1) National Missing Maps Mapathon
On Saturday, April 16, in all Belgian geography departments, will be organized a Mapathon which you are cordially invited to.
This Mapathon gather volunteers for a mapping operation to improve the coverage of free OpenStreetMap data for areas affected by disasters, epidemics, ... in order to support humanitarian assistance in its cartographic needs.
There is also an other project that seems starting a purely volunteer 'humanitarian mapping project' in Europe.
In collaboration with refugees, the project Jungle maps supported by OSM France will create a detailed, multi-lingual map of the refugee camp in Dunkerque to improve the delivery of aid &services and safety & comfort to the residents.