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Not all countries have the benefit of funding/technologies for developing GIS data stores. I'm looking for a list of common GIS data sources that should be investigated when trying to build a good basis for GIS analysis in developing nations (e.g road/river networks, DEMs, land use). Free or paid data.

My first stop is usually Glovis for Landsat coverage, but I often come up short on vector data.

For example, I would like to create a series of thematic maps for Nepal containing any and all GIS information I can get my hands on. Where would you begin?

EDIT: Organizational sources could also be useful, even if their data is not available online. E.g contacting the government department in charge of water resources.

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10 Answers

up vote 12 down vote accepted

I recommend checking the http://freegisdata.rtwilson.com/ web site which contains a categorised list of links to over 300 sites providing freely available geographic datasets - all ready for loading into a GIS.

To get OSM data or Natural Earth, as Ryan suggested, I recommend checking the http://market.weogeo.com

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I am accepting this answer because the first link contains links to most of the other data sources mentioned. If someone happens to be looking for Nepal-specific data later I recommend ICIMOD (icimod.org). Thanks to everyone. –  Radar Jun 19 '13 at 15:45
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I think you will find that the Natural Earth dataset and OpenStreetMap will give you a good start for worldwide base data, in addition to simply searching for questions with the tag here on our site.

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DIVA-GIS has a handy download by country tool which draws from GADM, Digital Chart of the World, CGIAR SRTM, GLC2000, CIESIN, WorldClim, and NIMA. You can download the following by country:

  • Administrative Areas
  • Inland Waters
  • Roads
  • Railroads
  • Elevation
  • Land Cover
  • Population
  • Gazetteer

Additionally, Penn Libraries has a good collection of international GIS links including the following categories:

  • Boundaries and Location
  • Elevation and Environmental
  • Biota
  • Society, Economy
  • Health
  • Transportation
  • Climate, Atmosphere
  • Farming
  • Water
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Wikimapia is worth checking within developing countries if you have a particular site.

It is a community mapping project that focuses on creating a geographically-referenced wiki system.

  • It shows what is actually on the ground and gives local names. This is a good starting point for improving understanding of aerial imagery.
  • Sites are often included in Wikimapia that are ignored by traditional topographic mapping. This location in Libya is a good example that includes military assets.
  • The quality, coverage, and currency are extremely variable so the data should be treated with caution.
  • The only way to export data is using an API.

enter image description here

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Just a quick google search and this guy might be of some help

See if there are any grassroots organizations that would have GIS or spatial data, like a conservation authority.

If there is no existing vector data, but you have an aerial you could always digitize it yourself!

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SimpleGeo’s CC0 Places data set is now available for download at no cost. If you’d like to get your hands on 21M+ POIs that cover 63 countries, we’re ready to hand that over to you in one file. The file is about 2GB in .ZIP format, and remember, with the CC0 license, this data becomes yours – free and clear – to do whatever you want. We hope you do awesome things with it! You can download it now by clicking here." Simplegeo is closed but data are available on Amazon

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Could you provide a link to the data on Amazon in your question so it helps others find it easily? –  RyanDalton Jun 14 '13 at 17:36
    
A version from 2011 is at s3.amazonaws.com/simplegeo-public/places_dump_20110628.zip –  Matthew Snape Jun 19 '13 at 11:51
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Have a look at these web sites:

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I think many of the above resources are great. If you want to add some very detailed DTM/hillshade layers to your maps I would suggest: SRTM 90m Digital Elevation Data.

For an idea on how to efficiently download the data (via wget), you can have a look at point 2 of the following readme.

As for downloading Open Street Map data, I think Planet.osm is the best starting point.

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SRTM & ASTER DEM are not very reliable in heavy mountainous terrain like Nepal. –  Devdatta Tengshe Jun 19 '13 at 10:13
    
You might well be right on this point, but still I am not aware of better free resources. I would say that its usability depends on what you are trying to achieve. As an example, this is a screen-shot of a layer I have created with OSM data plus SRTM. It is not perfect, but still acceptable at this scale... I think. –  Decio Jun 19 '13 at 20:41
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I would check the website and contact ICIMOD (International Centre for Integrated Mountain Development (Nepal), http://www.icimod.org/ , top right: "Information Resources"). They are very GIS oriented and are specialised in the region.

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I came across this site recently - they actually have crowd-sourced 2010 land cover for Nepal along with about 20 other data sets available as shapefiles. It's probably the best source I have found for the region so far. –  Radar Jun 19 '13 at 15:41
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Try this site: www.naksa.net They have lots of Nepal data, you can email them also.

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