2

I'm working on a QGIS plugin and struggling to find some existing QGIS processing functionally I could leverage. I need to replicate multi-basin delineation using pre-defined pour points. Specifically, I would like to delineate basins (or contributing area) for each cell representing a river segment. The ESRI watershed tool was used before for the function, referencing a input flow direction grid, and Pour_Points (a raster with each cell being a unique ID).

previous ArcPy implementation:

gp.Watershed_sa(fdirnd, Pour_Points, wshed_g, "")

Graphic below shows needed output. Blue line is a vector river segment. The blue line is converted to raster and matched cell size to a flow Direction raster. Each cell of the river represents a Pour point, in which a basin is delineated.

enter image description here

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.