Groundwater - hourly groundwater levels from 9 locations at Cabauw

Groundwater levels at Cabauw have been measured since August 2003 in two fields south of the tower. Nine piezometers were placed in a row. Initially, 6 of those piezometers contained pressure transducers (of the brand Keller) to measure levels automatically every 4 hours. On 9 July 2010, the temporal resolution was increased to hourly. Several sensors have stopped working since 2003. Piezometers that were not measured automatically were measured during each filed visit, which was initially every 2 weeks, but has become longer towards the end of the measurement period.

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Data and Resources

Additional Info

Field Value
Author Claudia Brauer
Maintainer KNMI Data Services
Version v1.0
Last Updated September 13, 2021, 09:40 (UTC)
Created September 13, 2021, 09:40 (UTC)
Dataset name cesar_grndwater_level_la1_t1h
Dataset version v1.0
East bound longitude 4.929
File identifier 54eb5665-53a0-40d6-b1b0-3002fdd802e5
From 2003-01-01T00:00:00
Identifier urn:xkdc:ds:nl.knmi::cesar_grndwater_level_la1_t1h/v1.0/
Linage statement Dataset has been gap filled (see dataset description document)
North bound latitude 51.975
Publication timestamp 2019-10-01T13:37:22
Reference system identifier EPSG4326
South bound latitude 51.968
Status completed
Supplemental information This dataset was initial uploaded and distributed via CESAR Database System, CDS ( The full name in CDS was cesar_groundwater_levelhourly_la1_t1h, v1.0 A dataset description document can be downloaded from
Until 2011-12-31T23:59:59
Update frequency notPlanned
Use limitation no limitations
West bound longitude 4.921