Martin Salzmann Cadastre, Land Registry and Mapping Agency of the Netherlands (Kadaster) How and why authoritative geo-data help us in our daily work

Cadastre, Land Registry and Mapping Agency Cables and pipelines

Organised in so-called key registers 13 key registers (7 with geo-information) Implementation of system takes years (has a large effect on working processes) Use by public bodies is compulsory Defined quality of data and relations between objects (results in harmonisation) Other information can be linked to data key registers Continuity (funding) guaranteed (political risk) Geo-data largely open data (available and accessible) System underlies NSDI (together with INSPIRE) Authoritative data in the Netherlands

Key facilities Kadaster Key register cadastre (*) Key register topography (*) Information node public restrictions Information node buildings and addresses (*) Information node large scale topography (*) Information node valuation (*) Information node planning/zoning Information node cables and pipelines Information node PDOK (Inspire) (* = directly related to key register)

PDOK creating a national information point for the national spatial data infrastructure (NSDI), open geo data and INSPIRE

crowdsourced data part of product basic service: create your own map end user: consumer and producer

Information created more easily Public real estate by Kadaster-Municipalities Analysis of municipality of Vlaardingen

Registration of networks Registration based on key register cadastre

Innovation in geographic information creating a 3D topographic map (LOD-0): Combination key register with national height dataset

Statistical application Statistics Netherlands: since 2012 use of key register buildings and addresses No more sampling Slight change of definitions; discontinuities of time series Trust in availability, quality and completeness of data Will gradually rely on more key registers (e.g. valuation)

Utrecht Amersfoort Veenendaal Veen Klei Fijn zand Matig grof zand Grof zand Antropogeen Kleiig zand & zandige klei Grind 50m Key register of subsoil

Use of subsoil information Geological Survey of the Netherlands: key register based on voxels (3D) Model is e.g. basis for groundwater modelling by waterboards Waterboards can focus on their core business

Witte kaart (‘white map’) national facility care centres for effective response in crisis situations (safety and health regions) Authoritative data of key registers combined with information of safety and health regions

Considerations for the future How adaptive will key registers be? How sustainable are authoritative data? - funding - quality - adaptation to users’ needs How is access and availability warranted in the long run? How can other parties (consumers, citizens, professionals) contribute to information society and authoritative data?

Simple world of authoritative data Informal Data Formal data

How will it evolve? Crowdsourcing Professionals Public sector authoritative data network oriented (core: public) part of broader iSociety (adaptive) protocols and harmonization sustainability is issue