license: cc-by-4.0
pretty_name: EU-Hydro Master Skeleton (curated GeoParquet)
tags:
- geospatial
- hydrology
- europe
- geoparquet
- copernicus
EU-Hydro Master Skeleton
Per-basin GeoParquet shards derived from the Copernicus EU-Hydro v1.3 GeoPackages. Four layers are published — river centerlines, river-surface polygons, inland-water polygons (lakes + wide waters), and river-basin polygons — all reprojected to a common CRS and stripped of admin-only columns for easier querying.
Contents
eu_hydro_master_skeleton_geoparquet/
├── river_lines/ # River_Net_l MultiLineString ~1.3 M features
├── river_polygons/ # River_Net_p MultiPolygon ~12 k features
├── inland_water/ # InlandWater MultiPolygon ~380 k features
├── river_basins/ # RiverBasins MultiPolygon ~100 features
└── manifest.csv # layer, file, source_basin, features
merge_euhydro.py # reproducer (extract zip → curate → GeoParquet)
Each subdirectory holds one shard per basin: euhydro_<basin>_v013.geoparquet. Shards are zstd-compressed and carry a source_basin column so you can concat them without losing provenance.
Layer quick reference
| Directory | Source layer | Geometry | Use case |
|---|---|---|---|
river_lines/ |
River_Net_l |
MultiLineString | Network topology, Strahler order, routing |
river_polygons/ |
River_Net_p |
MultiPolygon | Actual water-surface area of wide rivers — useful for satellite-image overlap (Sentinel-2 NDWI etc.) |
inland_water/ |
InlandWater |
MultiPolygon | Lakes, reservoirs, and any water body modelled as an area |
river_basins/ |
RiverBasins |
MultiPolygon | Catchment polygons for aggregating per-basin stats |
Common properties
- CRS:
EPSG:3035(ETRS89 / LAEA Europe) — units are metres, safe for area/length maths without reprojection. - Dimensions: 2D. Original Z/M values from EU-Hydro were dropped.
- Columns: admin-only fields (
BEGLIFEVER,ENDLIFEVER,UPDAT_BY,UPDAT_WHEN) were removed. All other source columns are preserved. - Excluded basins:
fr_guiana,fr_islands,iceland— non-continental or overseas.
One note: the hondo basin has no river_polygons/ shard. That's expected — the source GPKG's River_Net_p layer is empty for this basin (no rivers wide enough to be captured as an area).
Quick start
import geopandas as gpd
from huggingface_hub import hf_hub_download
path = hf_hub_download(
"cassini-team-todo/eu-hydro-master-skeleton",
"eu_hydro_master_skeleton_geoparquet/river_polygons/euhydro_shannon_v013.geoparquet",
repo_type="dataset",
)
shannon_polys = gpd.read_parquet(path)
print(shannon_polys.crs, shannon_polys.geom_type.unique(), len(shannon_polys))
Loading a whole layer across all basins:
from pathlib import Path
import geopandas as gpd, pandas as pd
from huggingface_hub import snapshot_download
local_root = Path(snapshot_download(
"cassini-team-todo/eu-hydro-master-skeleton",
repo_type="dataset",
allow_patterns="eu_hydro_master_skeleton_geoparquet/inland_water/*.geoparquet",
))
shards = sorted((local_root / "eu_hydro_master_skeleton_geoparquet" / "inland_water").glob("*.geoparquet"))
inland_eu = pd.concat([gpd.read_parquet(p) for p in shards], ignore_index=True)
Reproducing
The source GeoPackages aren't redistributable through this repo — download them from the Copernicus Land portal (EU-Hydro v1.3, per-basin GPKG zips). Place all euhydro_*_v013_GPKG.zip files in the same directory as merge_euhydro.py and run:
python merge_euhydro.py
This will extract each zip to a temp dir, read the four target layers with force_2d=True, drop admin columns, reproject any basin whose CRS differs from the first valid one, and write the output tree next to the script. A manifest.csv summarizing every shard is written at the end.
Source and licensing
- Source: Copernicus EU-Hydro v1.3 — https://land.copernicus.eu/en/products/eu-hydro
- License: Copernicus data is free and open (attribution required). This derived dataset is released under CC-BY-4.0; please cite Copernicus EU-Hydro in any downstream use.