Cadastre strategic directions workshop august 16 2012 western australian land information system
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CADASTRE STRATEGIC DIRECTIONS WORKSHOP AUGUST 16, 2012 Western Australian Land Information System. Peter Ingwersen. PURPOSE To collaboratively identify and consider opportunities for WOG efficiencies in regard to the future usage of the cadastre. CADASTRE REFERENCE GROUP(S)

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Cadastre strategic directions workshop august 16 2012 western australian land information system

CADASTRE STRATEGIC DIRECTIONS WORKSHOPAUGUST 16, 2012Western Australian Land Information System

Peter Ingwersen


  • PURPOSE

  • To collaboratively identify and consider opportunities for WOG efficiencies in regard to the future usage of the cadastre.


  • CADASTRE REFERENCE GROUP(S)

  • Existed at least since 1996, various names

  • Collaborative initiation/ progression/ implementation of many improvements to cadastre

  • POSITIONAL ACCURACY IMPROVEMENT GROUP…

  • - Since 2006

  • - Referential topology focus (... of derived datasets)

  • - Achieved some important wins, but largely tactical


  • Some priority tasks highlighted by PAIG to be progressed:

  • Complete Spatial Upgrade Pass 1

  • Complete Spatial Upgrade Pass 2

  • Provision of easement definition

  • Improved alignment of cadastre to imagery

  • Others, including:

    - Fix the lot areas

    - Provision of a planned layer

    - Lot synchronisation


  • CADASTRAL DATA ACCESS, USAGE (1)

  • Govt agencies (& LGA’s) access the cadastre differently.

  • Landgate Extracts:

  • Govt agencies get extracts of the cadastral data...

  • 2 get it monthly, 10 – qtrly,  5 – six-mthly, 2 – annually 

  • LGA’s get extracts of cadastre, … mixed frequencies

  • SLIP …

  • only 6 Govt agencies access the cadastre as a SLIP svce.


  • CADASTRAL DATA ACCESS, USAGE (2)

  • and, several Govt agencies (and LGA’s) not only maintain a local vsn of the cadastre, they maintain it differently:

  • Nightly, full refresh of locally-held cadastre via SLIP

  • Maintain local cadastre via Landgate-provided ‘data change files’

  • Maintain local cadastre using ‘pre-cal’s

  • Access cadastre effectively in real-time mode


  • We have a world-leading implementation of cadastre

  • We’ve got a very joined-up spatial community

  • We’ve implemented SLIP

  • BUT ... we still hold duplicate copies of the cadastre, and duplicate data maintenance activity !! ( since ...??)

  • Is it time to (re-)explore more optimised WOG access to, and use of cadastral data ...?


Location Information Strategy

for WesternAustralia

Putting Location into Action

  • LOCATION INFORMATION STRATEGY … AIMS:

  • FACILITATE WA’s growth thru better use of location info

  • ENABLE better informed decision-making

  • STREAMLINE the capture/ maintenance of Govt data

  • FOSTER innovative thought, process and practice


  • We hope to achieve… 2020 ‘ideal-world’ scenario-thinking re cadastral data:

    • Government and community demands upon cadastral (and related) datasets

    • Agency capacity to deliver, eg business impact considerations

    • Explore WOG efficiencies

      … How will we do things differently in 2020?

  • ITS NOT ABOUT ‘TWEAKING’ CURR. DELIVERY PRACTICE !


  • ITS ABOUT…

  • Strategic wants,… not operational/ tactical wants

  • WOG perspective

  • Cadastre, not just Spatial Cadastral Data Base (SCDB)

  • Blue-sky thinking,… there are no stupid ideas

  • We’re not trying to solve things here

  • Open discussion,… leave any sensitivities at door please


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