FlowTopo ======== Gives every pixel its position in the depth-first order of its basin, so the whole upstream area of any pixel is one contiguous block of that order. Code https://fullhydro.org/tools/flowtopo/ (Python, MIT) Paper submitted to Geoscientific Model Development (EGUsphere-2026-5497) License ODbL 1.0, following the MERIT Hydro terms Versions v1.0 in the Zenodo archive of FullBasin v1.0 (per-region zips) v1.1 rerun on the v1.1 regions, in preparation