#2709 - Peru Flood Support 5: Cajamarquilla

Please donate!
TheJambo validated #45

NicoVargas validated #84

OttoR validated #30

LLAQWA validated #102

LLAQWA validated #117

LLAQWA validated #128

LLAQWA validated #66

LLAQWA validated #50

LLAQWA validated #67

NicoVargas validated #17

rverhoef validated #47

LLAQWA validated #85

LLAQWA validated #103

LLAQWA validated #118

LLAQWA validated #130

LLAQWA validated #104

LLAQWA validated #86

LLAQWA validated #68

LLAQWA validated #69

rivw validated #19

HOT is supporting the local OSM community in Peru to improve the basemap in areas affected by recent flooding.

This project may not be easy for beginners as it involves mapping multiple features and preserving connectivity of the road network and waterways across task squares. The project is to provide a complete road network, all major waterways and all residential areas.

See this wiki-page for more information:2017 Floods in Peru

Created by bgirardot - Updated - Priority: medium


Entities to Map
buildings only
Changeset Comment
#hotosm-project-2709 #Peru #PeruFloods2017 #osmpe Imagery donated by #spacedat.com via #Mapbox. Adding buildings.
When saving your work, please leave the default comment but add what you actually mapped, for example "added buildings and a residential road".


Project Specific Mapping Instructions

  • Not for beginners - Expert JOSM Building Tool users will do best here
  • When saving, please edit the source field: Spacedat Drone Imagery 2017 via Mapbox
  • Map buildings that are part in and part out of your task square, try to select task squares with no one working next to you.
  • Review the example Task square #26 is well mapped and validated
  • Validators You will get overlapping building warnings - you should as some buildings share walls
  • Split as needed, the task squares in the densest areas are a bit too big, one split should make them good.


  • Please accurately outline all the individual 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.
  • 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.
  • Many buildings share walls and roofs appear as one structure Carefully map, but some multi buildings need to be mapped sharing walls, or as one larger building, sometimes covering 1/2 a block or more.

Only if you have personal knowledge of a building, please add that information to the building, like the name or type of building (hospital, school, gas station, etc)

  Start contributing

Contributors Done Assigned