#1195 - Peace Corps Senegal - Kedougou

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The purpose of this task is to trace missing buildings and roads.


The Peace Corps program in Senegal is requesting assistance in creating a base map for the city of Kedougou. The map data will be used by the local health system to track incidence of malaria and to improve services for people living with HIV in the city. More detailed basemap data -- roads and buildings -- is needed.

Through the MapGive project, the Humanitarian Information Unit (HIU) of the U.S. Department of State is providing the OpenStreetMap community access to updated satellite imagery services to help assist with humanitarian mapping.

Created by CourtneyMClark - Updated - Priority: low


Changeset Comment
#hotosm-project-1195 #PeaceCorps #PCSenegal #MapGive Source=WordView-2 & WorldView-3, DigitalGlobe, NextView, 1 Dec 2014, 1 Jan 2015, & 4 Jan 2015
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 NextView license agreement.

You need to review and acknowledge the agreement.

Please trace all buildings and roads.

Map roads and smaller paths for as far as you can follow them. Use Bing Imagery.

Buildings: Please label all buildings as general buildings. The Peace Corps Volunteer and the community will add their detailed local knowledge to the map after we complete the task.

Square the corners of all buildings by pressing “S” on your keyboard after labeling the building. You may see huts; make your buildings perfectly round by pressing “O”.

Roads: “The road conditions in Africa do not always correspond to their economic and social role. A road typology should be based on the road importance and not on the surface or the visual appearance of the road”. --Highway Tag Africa, OpenStreetMap Wiki

It can be hard to know the economic and social role of a road, but we can guess that a road is important to trace if it connects other roads, clusters of buildings, or towns and villages. Please use the tags below, taken from the OpenStreetMap Wiki:

Tertiary Road: The roads interconnecting villages and the major streets in towns of some importance.

Residential Road: The roads in residential areas except for major streets that interconnect with various roads (i.e. primary, secondary, tertiary).

Unclassified Road: The roads serving for interconnection of smaller villages and hamlets.

Track: The small roads going outside the residential areas, mainly for agricultural and forestry purposes. In general these roads do not have a connecting function with other roads.

For more information, please visit: http://wiki.openstreetmap.org/wiki/Highway_Tag_Africa.

Imagery Details

This imagery is from Digital Globe’s WorldView-2 and WorldView-3 satellite, and is made up of images taken on December 1st 2014, January 1st 2015, and January 4th 2015. The images are orthorectified for terrain corrected geographic precision. Additionally, the images have been contrast stretched using a custom stretch and processed into a Tiled Map Service (TMS) for performance.

Save with credit to HOTOSM. Comment the changeset with: #hotosm-project-1195 #PeaceCorps #PCSenegal #MapGive Source=WordView-2 & WorldView-3, DigitalGlobe, NextView, 1 Dec 2014, 1 Jan 2015, & 4 Jan 2015

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