Cadastral boundary data for select countries
Every claim here is quoted from a source or measured from the data. The measured values below came from queries over all 250,074 rows of the published file, run in August 2026.
https://data.source.coop/tristangruppwri/cadastral/uruguay-pais-rural/uruguay_pais_rural.parquet
GeoParquet 1.1.0, EPSG:4326, WKB, geometry types Polygon and MultiPolygon,
bbox covering column present, ZSTD, 6 row groups, largest 50,000 rows,
smallest 74. Parquet format version 2. 147,369,120 bytes.
Column names are upper case. NOMDEPTO, not nomdepto. DuckDB matches
case-insensitively; other readers do not.
PADRON is not unique, even inside a department. 250,074 rows, 65,605
distinct PADRON, 242,899 distinct (CODDEPTO, PADRON). A join on it fans
out.
AREAHA is an int64. A parcel under one hectare rounds, and some round
to 0. Use AREAMC, a double in square metres, when the size matters. Do not
reconcile the two: they disagree by the rounding.
NOMOFIDEL is the cadastral office, not a person. It frequently holds the
same string as NOMDEPTO, which makes it look like a duplicate column. It is
not.
Do not compute area or length from the geometry with DuckDB spatial
functions. The geometry is EPSG:4326, so planar area is meaningless, and
ST_Length_Spheroid returns silently wrong finite values. AREAHA and
AREAMC are the source's own figures. Use them.
The object is served as Content-Type: binary/octet-stream. The
collection declares application/vnd.apache.parquet. Dispatch on the STAC
declaration, not the header.
other, linking Licencia de Datos Abiertos — Uruguay v0.1. It permits
redistribution, commercially and non-commercially, on the condition of the
Nota de Origen: name Dirección Nacional de Catastro, cite the licence by
name, cite the dataset, and state the modification. The modification here is
the reprojection to EPSG:4326 and the rewrite as GeoParquet.
CC-BY-4.0 is the closest analogue and is not the licence. Do not substitute it.