35 kilometres of borehole data added to DINOloket

The Geological Survey of the Netherlands (GDN) has digitised and added some 35 kilometres of historical borehole data to DINOloket on behalf of Rijkswaterstaat. The addition concerns data from 1,459 borehole surveys from 1900 to the present that have been converted into digital data.

It concerns borehole data up to a depth of about 223 metres, mostly done in the area of the Zuiderzee, the Markermeer, the Afsluitdijk, and the province of Flevoland. This geological data comes from Rijkswaterstaat and is now digitally available to everyone via DINOloket. These data can be used for various purposes.

Tremendous added value

‘The digitised data is already being gratefully used,’ says GDN colleague Ruud Mutsaers. ‘Later this year, TNO will create a GeoTOP model of the Flevoland province, which will be partly based on the digitised data. That grid model, with cells measuring 100 by 100 metres and half a metre thick, will map the Dutch subsurface. It will also be included in National Key Registry of the Subsurface (BRO). The data we have now digitised make the model better and more reliable. For the project development at the IJmeer and Markermeer dykes, this is of tremendous value. It is a great example of how valuable archival data can be.’