Strahler-order basins

This tool will identify the catchment areas of each Horton-Strahler stream order link in a user-specified stream network, i.e. the network's Strahler basins. The user must specify the name of a flow pointer (flow direction) raster, a streams raster, and the output raster. The flow pointer and streams rasters should be generated using the D8 algorithm. The tool effectively performs a Horton-Strahler Stream Order operation followed by by a watershed operation.

NoData values in the input flow pointer raster are assigned NoData values in the output image. The output raster is of the float data type and categorical data scale.

See Also:


The following is an example of a Python script that uses this tool:

wd = pluginHost.getWorkingDirectory()
streamsFile = wd + "streams.dep"
pointerFile = wd + "D8 pointer.dep"
outputFile = wd + "output.dep"
args = [streamsFile, pointerFile, outputFile]
pluginHost.runPlugin("StrahlerOrderBasins", args, False)

This is a Groovy script also using this tool:

def wd = pluginHost.getWorkingDirectory()
def streamsFile = wd + "streams.dep"
def pointerFile = wd + "D8 pointer.dep"
def outputFile = wd + "output.dep"
String[] args = [streamsFile, pointerFile, outputFile]
pluginHost.runPlugin("StrahlerOrderBasins", args, false)