Based on HydroSHEDS v2 (Lehner et al., 2022), the 1 arc-second flow directions, about 30 m at the equator.
The basin mask and the region masks of FullBasin, computed on HydroSHEDS v2 at 30 m, one continent at a time. Every land pixel is assigned to a basin; whole basins are grouped into regions that fit in memory, in four different partitions, and every later step works one region at a time. Tables carry the 30 m numbers; the maps draw the same masks, simplified. Licence CC BY 4.0.
Step 0 of the FullBasin release, at 30 m. The 90 m collection goes on to a per-pixel upstream index and sixteen upstream attributes; at 30 m those are not computed yet. What is here is the division of North America and South America into basins and regions, complete, with the tables that describe every basin above 1 km² and every region of the four partitions. HydroSHEDS v2 has released the Americas; the other continents follow when it does.
The basin mask: every basin numbered by area, basin 1 the largest. The region masks: four partitions of the same basins, the HydroBASINS level-3 units and three capacity partitions of 160, 80 and 40 square degrees. Map on the left, the released tables on the right, with their own columns; a basin's own region is its level-3 one. The continent is chosen on the page.
The per-pixel upstream index and the upstream attributes of the 90 m collection, not yet computed at 30 m.
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fullhydro.org