FullHydro downloads
===================

Data computed by the FullHydro tools.  Full... is the data; Flow... is the tool
(code) that computes it.

  merit-hydro-90m/       MERIT Hydro, 90 m, global
  hydrosheds-v2.0-30m/     HydroSHEDS v2.0, 30 m, released continents
    fullbasin/           FullBasin, every land pixel
      fulldivide/        basins and regions          computed by FlowDivide
      fulltopo/          drainage order              computed by FlowTopo
      fullmorph/         upstream shape              computed by FlowMorph
      fullattr/          flow length, stream order   computed by FlowTopo
    fullriver/           FullRiver, river channels (coming soon)

Folders    <source grid>/<dataset>/<part>/<version>/, the same paths on https://data.fullhydro.org/
Files      every table as <name>.csv and <name>.parquet (Apache Parquet),
           every outline layer as <name>.gpkg (GeoPackage) and <name>.geo.parquet (GeoParquet 1.1),
           every raster as a Cloud-Optimized GeoTIFF (.tif): the same content in each pair.
           Each folder of files has a SHA256SUMS.txt: sha256sum -c SHA256SUMS.txt checks a download.

Before you download: three notes
  1. Independent datasets.  Everything here is computed by the Flow* tools from
     MERIT Hydro or HydroSHEDS v2.  These are not official MERIT Hydro products and
     are not part of the official HydroSHEDS family of products.
  2. Get the source data from the providers first.  Download the flow directions (dir),
     elevation (elv) and the other source layers from
       MERIT Hydro · 90 m      https://global-hydrodynamics.github.io/MERIT_Hydro/
       HydroSHEDS v2.0 · 30 m    https://www.hydrosheds.org/hydrosheds-v2
  3. Source data are not here.  FullHydro does not redistribute any MERIT Hydro or
     HydroSHEDS product itself, such as the flow directions, flow accumulation,
     elevation or HydroBASINS.

Code       https://github.com/hellolulujiang/flowdivide
           https://github.com/hellolulujiang/flowtopo
           https://github.com/hellolulujiang/flowmorph
License    FullDivide, FullMorph                    CC BY 4.0
           FullTopo, FullAttr on MERIT Hydro        ODbL 1.0 (MERIT Hydro terms)
           FullTopo, FullAttr on HydroSHEDS v2.0      CC BY 4.0
Contact    Lulu Jiang, https://lulujiang.me

Every file can be read over HTTP without downloading it whole (range requests):
  rasterio.open("https://data.fullhydro.org/merit-hydro-90m/fullbasin/fulldivide/v1.1/bsn_global_90m.tif")
  geopandas.read_parquet("https://data.fullhydro.org/merit-hydro-90m/fullbasin/fulldivide/v1.1/rgn_global.geo.parquet")