Tiling system to delineate entire basins
We zoom in Terra del Fuego (Argentina) to appreciate the details of the stream network. The minimum upper stream flow accumulation area (threshold) was set to 0.05 km. This small value allows delineating very small headwater streams.
Global basins and stream network
Stream network over-imposed on OpenStreetMap
Our stream network is able to identify very small streams, that are not present in OpenStreetMap.
Stream network over-imposed to satellite images
Over-imposing the stream network on satellite images highlight a good quality match between the valleys and derived streams.
Is ongoing a validation procedure with national datasets.