Global free-flowing rivers — connectivity assessment

The complete river-reach network from Mapping the world’s free-flowing rivers, preserved in GeoParquet with all producer fields and source geometry. A separately versioned PMTiles layer provides zoom-dependent map display and source-ID attribute lookup.

Validated hosted release: figshare-v1-local-r2. The canonical record binds the public Source Cooperative package and its completed hosting checks.

Scope and formats

Analytic GeoParquet conversion of the full global free-flowing river reach network from the pinned 2019 figshare v1 source. Original source fields and WKB geometries, nulls, row order, and record multiplicity are preserved. Added columns expose the producer-stream row ordinal and per-feature EPSG:4326 bounds. This release does not assess scientific validity or update the source assessment.

Formats: application/json, application/vnd.apache.parquet, application/vnd.pmtiles, image/png.

Producer, source, and license

• Producer attribution: Grill, G., Lehner, B., Thieme, M. et al. (2019), Mapping the world’s free-flowing rivers, DOI 10.1038/s41586-019-1111-9. Original conversion evidence retains Folia attribution.

• License: CC BY 4.0. Retain Grill, Lehner and coauthors’ attribution, source release identity and original field definitions.

• Temporal scope: Static assessment using source information assembled circa 2017; paper published in 2019.

• License terms

• Producer source

• Dataset release

• Dataset release

• Folia converter/host

• Original download

• Producer: Bernhard Lehner

• Producer: Günther Grill

Release files

• ffr-reach-network-v1.parquet (asset)
• thumbnail.png (display_derivatives)
• data-license.json (data_license)
• source-license.json (source_license)
• ffr-reach-network-v1-field-dictionary.json (field_dictionary)
• attribution.json (source_attribution)
• source-field-dictionary.json (supporting_files)
• source-inspection.json (supporting_files)
• source-metadata.json (supporting_files)

Display package

Display release: display-v1. The manifest is pinned at SHA-256 2f7046f914ff49749dffd20df9c6c5010706710b881af915633766da4d91fb6d. Display assets are separate immutable derivatives bound to this analytical release.

• Display manifest
• Ffr Reaches PMTiles (3570445458 bytes; SHA-256 6e248eba5ecdf58ee28705a8f567be9497836f0a1c6c078b50327a1599ecdce3)
  • Map style

Limitations

• Reach connectivity indicators are model-derived research attributes, not a current observation of every barrier or river condition.
• Retained validation establishes conversion fidelity and reproducibility; it does not independently revalidate the scientific model.
• Live GEE count and all 521 sampled IDs match. A documented erosion-field alias, numeric precision and null/empty differences remain; five selected geometry diagnostics exceed 1 m, up to 2.877 m. Strict parity fails; original source values and geometry are retained.

Public hosting checks are bound in the canonical report. Scientific validation retains its documented scope.