Dutch Portolan Demo

A collection of datasets from various Dutch institutions to demonstrate a Spatial Data Infrastructure built on Portolan.

Product Details

Visibility: Public
Owner: Chris Holmes
Created: 6 May 2026
Last Updated: 6 May 2026

Product Contents

root

vro

grondwatergebruiksysteem

README.md

Name: README.md
Size: 2.77 KB
Content Type: binary/octet-stream
Last Modified: 7 Jun 2026
Source URL: https://data.source.coop/cholmes/portolan-nl/vro/grondwatergebruiksysteem/README.md
Cloud URI: s3://us-west-2.opendata.source.coop/cholmes/portolan-nl/vro/grondwatergebruiksysteem/README.md

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Name: README.md
Size: 2.77 KB
Content Type: binary/octet-stream
Last Modified: 7 Jun 2026
Source URL: https://data.source.coop/cholmes/portolan-nl/vro/grondwatergebruiksysteem/README.md
Cloud URI: s3://us-west-2.opendata.source.coop/cholmes/portolan-nl/vro/grondwatergebruiksysteem/README.md

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BRO Groundwater Use System (GUF / Grondwatergebruiksysteem)

50,637 groundwater use systems (grondwatergebruiksysteem, GUF) from the BRO — constructions that extract or infiltrate groundwater, including ground-source energy (ATES/bodemenergie). Produced under VRO; bronhouder TNO.

AI/Agent users: see llms.txt for field meanings, query examples and caveats.

Spatial coverage

Geometry: MultiPoint · Features: 50,637 · CRS: EPSG:4258
Bounding box (WGS84): [3.372981, 50.766874, 7.202634, 53.487785]

Schema

Column	Type	Description
groundwater_usage_facility_pk	int64
bro_id	string	BRO registration ID — unique identifier of the object in the Basisregistratie Ondergrond.
quality_regime	string	BRO quality regime: IMBRO (full assurance) or IMBRO/A (transitional/lower assurance).
delivery_accountable_party	string	KvK number of the party accountable for delivery (bronhouder).
delivery_context	string	Legal/administrative framework under which the object was registered.
applied_transformation	string	Whether a coordinate/height transformation was applied (ja/nee).
standardized_location	binary	Object location — WKB geometry in EPSG:4258 (ETRS89).
standardized_location_bbox	struct<xmin: float, ymin: float, xmax: float, ymax: float>	Per-feature bounding box struct (xmin,ymin,xmax,ymax) for spatial filtering.

Files

File	Format	Description
grondwatergebruiksysteem.parquet	GeoParquet	50,637 features (EPSG:4258)
grondwatergebruiksysteem.pmtiles	PMTiles	Vector tiles for web maps
styles/	Mapbox GL v8	Visualization styles
thumbnail.png	PNG	Official PDOK preview

Quick start

Styles

styles/default — BRO Groundwater Use System (GUF / Grondwatergebruiksysteem) — Default
styles/by-quality-regime — BRO Groundwater Use System (GUF / Grondwatergebruiksysteem) — By quality regime

Source

PDOK — Basisregistratie Ondergrond (BRO). Provider: Ministerie van Volkshuisvesting en Ruimtelijke Ordening (VRO). Bronhouder: TNO – Geologische Dienst Nederland / Wageningen Environmental Research.

License

CC0-1.0 — public domain.

Part of Portolan NL · generated from STAC metadata.