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

mijnbouwconstructie

README

BRO Mining Construction (EPC / Mijnbouwconstructie)

4,975 mining-law subsurface constructions (mijnbouwconstructie, EPC) from the BRO — deep boreholes, mine systems and salt caverns for oil, gas, geothermal energy and storage. Produced under VRO; bronhouder TNO.

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

Spatial coverage

Geometry: MultiPoint · Features: 4,975 · CRS: EPSG:4258
Bounding box (WGS84): [2.816739, 50.758652, 7.201984, 55.681014]

Schema

Column	Type	Description
mining_construction_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.
legal_status	string	Legal status of the construction (e.g. onbekend, buitenGebruikMijnbouw).
owner	string	Owner / operator of the mining construction.
source_reference	string	Reference to the source document.
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
mijnbouwconstructie.parquet	GeoParquet	4,975 features (EPSG:4258)
mijnbouwconstructie.pmtiles	PMTiles	Vector tiles for web maps
styles/	Mapbox GL v8	Visualization styles
thumbnail.png	PNG	Official PDOK preview

Quick start

1import geopandas as gpd
2gdf = gpd.read_parquet('https://data.source.coop/cholmes/portolan-nl/vro/mijnbouwconstructie/mijnbouwconstructie.parquet')
1import geopandas as gpd
2gdf = gpd.read_parquet('https://data.source.coop/cholmes/portolan-nl/vro/mijnbouwconstructie/mijnbouwconstructie.parquet')

Styles

styles/default — BRO Mining Construction (EPC / Mijnbouwconstructie) — Default
styles/by-legal-status — BRO Mining Construction (EPC / Mijnbouwconstructie) — By legal status

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.