FullBasin
=========

Every land pixel of the source grid.

  fulldivide/   basins and regions: masks, tables, outlines, basin groups
  fulltopo/     drainage order: depth-first order, parallel layers, partitions
  fullmorph/    upstream shape: upstream elevation and slope, perimeter,
                basin length and width, ratios
  fullattr/     flow length downstream (ldn) and upstream (lup), Strahler order (ord)

Every part covers every land pixel, except
  fullmorph     kept where the upstream area is at least 10 km2 (MERIT Hydro) or
                1 km2 (HydroSHEDS v2.0), about 1,200 pixels, to keep the files small;
                FlowMorph computes every pixel
  ord           river pixels only

Paper          MERIT-FullBasin, ESSD discussion, https://doi.org/10.5194/essd-2026-402
Version 1.0    MERIT Hydro, on Zenodo, https://doi.org/10.5281/zenodo.20344113