Niamey is the capital of Niger, a country in Northern Africa. Niamey is subject to a range of natural and human-induced stresses such as droughts, flooding, conflict and food insecurity. Much like many other African countries, gathering evidence to support decision making is a challenge, as data resources are limited. This work aims to improve the spatial data available for Niamey by mapping the locations of houses, roads and land use types. This data will support research being undertaken as part of the Urban ARK project (www.urbanark.org) with local partners in Niamey. You can read more about the work they are undertaking here: https://www.urbanark.org/sites/default/files/resources/UrbanArk_briefing_4_Niamey_English_FINAL%20web.pdf
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- #hotosm-task-346 #UrbanARK #mapNiamey
In this task, please map the following:
Buildings Trace the outline of buildings as a polygon area. As it is unlikely we will know what type of building this is (e.g., residential, school etc.), generally just use the tag Building Features = Building. Many buildings will be in a compound with a clear wall feature. You can also map the wall as a line and tag it as a fence.
Roads Most of the major roads in Niamey appear to have been mapped, so it is more likely that you will be adding small residential tracks to the map which should be drawn as lines with the tag Highway = Residential and Surface = unpaved (or surface = paved). OSM has a good description of road types in Africa, available here: http://wiki.openstreetmap.org/wiki/Highway_Tag_Africa
(Suggested for Expert Mappers): Land Use and Land Cover Types Our colleagues in Niamey would find it helpful to have better information on land use (how humans use the space) and land cover (what the surface is covered by) to inform their work on flooding. We suggest you tag broad areas with land use or land cover types (this might extend out of the area of your tile). A full list of land use types is available at: http://wiki.openstreetmap.org/wiki/Key:landuse. Land cover is slightly more complex, and will mainly be encapsulated by the tags natural = or surface = . A discussion of this is available at http://wiki.openstreetmap.org/wiki/Landcover. Some of the most common tags in Niamey would be:
Landuse = Farmland (An area of farmland used for tillage and pasture (animals, crops, vegetables, flowers, fruit growing) Landuse = Residential (Predominantly houses or apartment buildings) Landuse = Industrial (Predominantly workshops, factories or warehouses) Landuse = Commercial (Predominantly offices, business parks, etc.) Landuse = Recreation ground (An open green space for general recreation, which may include pitches, nets and so on, usually municipal but possibly also private to colleges or companies) Natural = scrub (Uncultivated land covered with bushes or stunted trees) Natural = sand (An area covered by sand with no or very little vegetation) Natural = water (A body of water, such as a lake or pond) Surface = ground (No special surface, the ground itself has marks of human or animal usage. This value gives only a rough description; if possible, use a more precise value such as grass, clay, sand, gravel, pebblestone or rock)