...
The basin delineation was done semi-automatically, including some manual corrections and subjective decisions on where to split very large catchments and how to group small river catchments along the coastal areas. The basin borders perfectly align with the 1 arcmin (~1.5 km) LISFLOOD river network in EFAS, while follow the 3 arcmin (~5 km) river network in GloFAS down to 250 km2 pixel size. Some basins are smaller while others are larger, generally smaller over EFAS, while larger outside of the EFAS domain. In addition, the basin size was often determined by the complexity of the river network and whether splitting larger basins made practical sense, i.e. not to create too small / too many basins, in case the river network complexity would not really have allowed it.
In total, 944 942 basins were defined globally (Figure 1a), of which 204 are within the EFAS domain (Figure 1b). The basin size ranges from yyy1 2550 km2 to yyy2 783761 km2 globally, while zzz1 to zzz2 6467 km2 to 295472 km2 in EFAS, with the average size of XXX1 54844 km2 in EFAS and XXX2 142481 km2 in GloFAS.
a)
| b)
|
Figure 1. Basins and representative points in EFAS (a) and in GloFAS (b).
...