Product Details

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

Product Details

Product Contents

Product Details

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

Product Contents

root

rvo

nationale_parken

README.md

Name: README.md
Size: 2.28 KB
Content Type: text/markdown
Last Modified: 7 May 2026
Source URL: https://data.source.coop/cholmes/portolan-nl/rvo/nationale_parken/README.md
Cloud URI: s3://us-west-2.opendata.source.coop/cholmes/portolan-nl/rvo/nationale_parken/README.md

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Dutch Portolan Demo

Name: Dutch Portolan Demo
Creator: Chris Holmes

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

Name: README.md
Size: 2.28 KB
Content Type: text/markdown
Last Modified: 7 May 2026
Source URL: https://data.source.coop/cholmes/portolan-nl/rvo/nationale_parken/README.md
Cloud URI: s3://us-west-2.opendata.source.coop/cholmes/portolan-nl/rvo/nationale_parken/README.md

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National Parks (Nationale Parken)

Boundaries of all 21 National Parks in the Netherlands. Large contiguous natural areas of national and international importance, designated for their ecological, landscape, and recreational value. Parks range from coastal dunes and forests to wetlands, heathlands, and tidal estuaries. Managed by the provinces since the 2023 reform. Published by RVO via PDOK.

AI/Agent users: See llms.txt for field descriptions, query examples, and usage tips.

Spatial Coverage

Bounding Box: [3.605234, 51.130639, 6.843200, 53.523266]

Schema

Column	Type	Description
id	string	Unique identifier (UUID)
naam	string	Name of the National Park (Dutch)
nr	int32	Sequential park number (chronological designation order, 1-22)
hectares	float64	Area of the park in hectares
datum	string	Date of designation (ISO 8601)
bron	string	Source of the boundary
fiat_secr	string	Approved by the Secretary of State (Ja/Nee/blank)
instrument	string	Protection instrument type (always 'Nationaal Park')
geometry	binary	MultiPolygon in EPSG:28992 (RD New), WKB encoded

Files

File	Format	Description
nationale_parken.parquet	GeoParquet	21 national park boundary polygons
nationale_parken.pmtiles	PMTiles	Vector tiles for web visualization

Quick Start

STAC Metadata

root: ../../catalog.json
parent: ../catalog.json

Source

PDOK OGC API collection

Attribution

Rijksdienst voor Ondernemend Nederland (RVO)

License

CC0-1.0

Contact

Chris Holmes cholmes@9eo.org

Generated by Portolan from STAC metadata

National Parks (Nationale Parken)

AI/Agent users: See llms.txt for field descriptions, query examples, and usage tips.

Spatial Coverage

Bounding Box: [3.605234, 51.130639, 6.843200, 53.523266]

Schema

Column	Type	Description
id	string	Unique identifier (UUID)
naam	string	Name of the National Park (Dutch)
nr	int32	Sequential park number (chronological designation order, 1-22)
hectares	float64	Area of the park in hectares
datum	string	Date of designation (ISO 8601)
bron	string	Source of the boundary
fiat_secr	string	Approved by the Secretary of State (Ja/Nee/blank)
instrument	string	Protection instrument type (always 'Nationaal Park')
geometry	binary	MultiPolygon in EPSG:28992 (RD New), WKB encoded

Files

File	Format	Description
nationale_parken.parquet	GeoParquet	21 national park boundary polygons
nationale_parken.pmtiles	PMTiles	Vector tiles for web visualization

Quick Start

STAC Metadata

root: ../../catalog.json
parent: ../catalog.json

Source

PDOK OGC API collection

Attribution

Rijksdienst voor Ondernemend Nederland (RVO)

License

CC0-1.0

Contact

Chris Holmes cholmes@9eo.org

Generated by Portolan from STAC metadata

1import geopandas as gpd
2gdf = gpd.read_parquet('nationale_parken.parquet')
3print(gdf[['naam', 'hectares']].sort_values('hectares', ascending=False))

1import geopandas as gpd
2gdf = gpd.read_parquet('nationale_parken.parquet')
3print(gdf[['naam', 'hectares']].sort_values('hectares', ascending=False))