watershed function

Catchment delineation

delineate the area covered by a catchment from a SpatRaster with flow direction and a pour-point (catchment outlet). methods

## S4 method for signature 'SpatRaster'
watershed(x, pourpoint, filename="",...)

Arguments

• x: SpatRaster with flow direction. See terrain.
• pourpoint: matrix or SpatVector with the pour point location
• filename: character. Output filename
• ...: additional arguments for writing files as in writeRaster

Returns

SpatRaster

Author(s)

Ezio Crestaz, Emanuele Cordano, Roman Seliger

Examples

elev <- rast(system.file('ex/elev_vinschgau.tif', package="terra"))
flowdir <- terrain(elev, "flowdir")
## pour point at Naturns 
pp <- cbind(653358.3, 5168222)
w <- watershed(flowdir, pp)