#762 - Identification of Agricultural Land in Guinea, West Africa (Archived)

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Agriculture is the main economic activity in West Africa with two thirds of the population dependent on farming. The ongoing Ebola outbreak in West Africa is causing both immediate food security issues with quarantines and travel restrictions and is creating the potential for medium term food security issues as people who once worked farms have been killed by the outbreak or left their farms out of worries about contracting the virus.

United Nations Special Rapporteur on the Right to Food, Hilal Elver said in November 2014: "Farmers in West Africa have been severely affected by this crisis, with fear and panic resulting in many having abandoned their farms, this in turn has led to a disruption in food production and a soaring rise in food prices. Staple crops such as rice and maize will reportedly be scaled back due to shortages in farm labour with potential catastrophic effect on food security."

Aid agencies and humanitarian groups are already considering ways to deal with these food security issues and the information mapped in this project will greatly contribute to their planning and food resource coordination efforts.

Detailed information about all of the Humanitarian OpenStreetMap Team's Ebola Activation can be found on the HOT Ebola Response Page

If you have any questions about mapping and would like to speak with other mappers in real time please try our HOT IRC Live Chat Area Replies can take a little while so leave the browser window open.

During #OSMGeoWeek, OSM and HOT aim to contribute through remote mapping of farmland and orchards in the critical agricultural areas most impacted by the 2014 West African Ebola virus disease outbreak.

Created by bgirardot - Updated - Priority: low


Entities to Map
Any area clearly under cultivation such as row crops, paddies or orchards
Changeset Comment
#OSMGeoWeek #hotosm-project-762 Source=Bing;Mapbox
When saving your work, please leave the default comment but add what you actually mapped, for example "added buildings and a residential road".

Using the available satellite imagery (Bing, Mapbox) please look for medium to large agricultural landuse areas that have not been mapped yet. From aerial imagery row crops will be obvious with large regularly shaped fields, although often they are in small areas with irregular boundaries. Please do not map small individual farms or any areas that are not very clearly currently being used for agriculture on a medium to large scale. About the minimum size to map is an area 500m x 100m. You can look at validated squares (green) for examples.

Orchards are also somewhat obvious with neat, regular rows of well spaced trees, again, the boundaries of the area may be somewhat irregular.

  • Please carefully outline farmlands and use the tag: landuse=farmland
  • Please carefully outline orchards and use the tag: landuse=orchard

Please note:

  • The tasks can be very difficult to map because so much of the land area is farmland in close proximity to waterways. Feel free to unlock the task and look for an easier one to map.
  • Do not expect to find larger agricultural areas in every task. There may only be very small farms which we are not mapping. Please look for larger cultivated fields where significant production could come from.
  • Areas you are mapping should be very obviously crops or one of the first 3 crop types on this page: HOT West Africa Mapping Tips
  • This is a first pass over the country for agricultural areas, do not worry to much about mapping questionable areas or small areas (less than 200m on a side). If you are having questions about if you should map it, just skip it, we will get it on another pass.

For iD web editor users, please do not use the presets of "farm" or "farmyard." The following instructions are for the iD web editor:

  1. Using the area tool, outline the area of farmland or orchard.
  2. From the list of presets on the left scroll to the bottom and select "Area" preset. This will show you the iD tag editor.
  3. Click on the "All tags (1)" link and it will show you the interface to add tags.
  4. Click the black " + " tab at the bottom of the tag list.
  5. Enter "landuse" as the label and "farmland" or "orchard" as the value.

After you outline another area, the "Area" preset will be at the top, but you will still need to add the landuse=farmland or orchard tag.

iD web editor users will automatically have the imagery they used attached to the changeset, JOSM users should include a source=* tag and specify which imagery you used for mapping, multiple values are fine.

Imagery Information: Bing aerial imagery should be the primary source for tracing and the definitive background alignment with no offset for any other imagery. Mapbox will have some high resolution coverage where Bing does not. Map what you can see and put a note in the Tasking Manger comment box when you "Unlock" the task or "Mark Task as Done" about the lack of good high resolution imagery.

For people who want to join in on a "virtual mapping party" working on these agricultural mapping tasks please visit the Humanitarin OpenStreetMap Team Mumble Server Information Page and install the mumble client for your operating system. The Humanitarin OpenStreetMap Team Mumble Server Information Page has the HOT OSM Mumble server listed on it. Join in with experienced mappers and new mappers as we discuss just what it is we are looking at. Ask all your questions and share urls for others to look at. People who want to work on any task from the tasking manager can join and get answers to questions as well.

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