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The mission of the Spatial Data on the Web Working Group is to clarify and formalize the relevant standards landscape. In particular:

  • to determine how spatial information can best be integrated with other data on the Web;
  • to determine how machines and people can discover that different facts in different datasets relate to the same place, especially when 'place' is expressed in different ways and at different levels of granularity;
  • to identify and assess existing methods and tools and then create a set of best practices for their use;

where desirable, to complete the standardization of informal technologies already in widespread use.

Ogc logo.jpg
The Spatial Data on the Web WG is part of the Data Activity and is explicitly chartered to work in collaboration with the Open Geospatial Consortium (OGC), in particular, the Spatial Data on the Web Task Force of the Geosemantics Domain Working Group. Formally, each standards body has established its own group with its own charter and operates under the respective organization's rules of membership, however, the 'two groups' will work together very closely and create a set of common outputs that are expected to be adopted as standards by both W3C and OGC and to be jointly branded.

Read the charter and join the Working Group.


Variations to the timeline are reported here

Use Cases & Requirements

First PWD published by OGC and W3C 23 July 2015. Second PWD published on December 17 2015. Third and final PWD planned for August 2016.

Spatial Data on the Web Best Practices

Second PWD published 19 January 2016, next PWD planned for July 2016.

OWL Time Ontology

FPWD planned for before end July, possibly end June 2016.

Semantic Sensor Network Ontology

FPWD published 31 May 2016. Next planned for shortly after TPAC, ie late September 2016

Coverage in Linked Data

Regular work on this has ramped up in March 2016. FPWD proposed for October 2016.

Work in Progress

Latest published version
Editor's Draft
Working Use Cases
Scope questions and Requirements
Spreadsheet collating Reqs from UCs
UC References
UC Wish List
  • Spatial Data on the Web Best Practices
Latest published version
Editor's draft
how to work with GitHub
Notes for Context
BP Principles
BP References
BP Wish List
BP Requirements
BP Consolidation
BP Consolidated Narratives
BP Structure Examples
BP Theme - Linking Data
BPs to hand over to other WGs in W3C or OGC
BP Spatial Data Formats
BP_Narrative - and a second version that provides tangible examples: BP Narrative 2
BP consolidation proposal - merging closely related best practices and aligning with DWBP
An agreed spatial ontology
ISO 19115 - DCAT - mapping
  • OWL Time Ontology
2006 draft
Latest published draft (2016-07-12)
Editor's draft
Time References
Time Wish List
Time Issues and Notes
Latest Published Version
Editor's draft
how to work with GitHub for ssn
Proposals for rewriting SSN
SSN Tasks
SSN References
SSN Wish List
Editors' draft
Cov References
Cov Wish List
RDF Datacube for Coverages
Beginnings of a W3C note

Infrastructure & Contacts

The WG's main communication channel is its mailing list. This is publicly archived but only WG members may post to it.

You are welcome to send comments to the WG through the public comment mailing list [archive]

The WG creates and maintains editors' drafts in its GitHub Repository.

WG co-chairs: Kerry Taylor, Australian National University, and Ed Parsons, Google

Team contacts: Phil Archer (W3C), Scott Simmons (OGC)

You can contact the chairs and team directly via <>

Full list of WG participants

GitHub repository


See the separate Meetings page for links to agendas, minutes, dial in details etc.

Fourth Face to face meeting : W3C TPAC, Lisbon, on Monday 19th and Tuesday 20th September.

The WG is expected to hold face to face meetings twice a year, typically at OGC TC meetings and W3C TPAC.

See also the program of Technology Talks

Advice for the group

- See the csv on the web group for best practice use case style and wiki style

Publications, Presentations, Media about the Working Group