SAGA-GIS Module Library Documentation (v2.1.3)

Module Channel Network and Drainage Basins

Deterministic 8 based flow network analysis

Parameters

 NameTypeIdentifierDescriptionConstraints
InputElevationGrid (input)DEM--
OutputFlow Direction (*)Grid (optional output)DIRECTION--
Flow Connectivity (*)Grid (optional output)CONNECTION--
Strahler Order (*)Grid (optional output)ORDER--
Drainage Basins (*)Grid (optional output)BASIN--
ChannelsShapes (output)SEGMENTS--
Drainage BasinsShapes (output)BASINS--
Junctions (*)Shapes (optional output)NODES--
OptionsThresholdIntegerTHRESHOLDStrahler order to begin a channel.Minimum: 1
Default: 5
(*) optional

Command-line

Usage: saga_cmd ta_channels 5 -DEM <str> [-DIRECTION <str>] [-CONNECTION <str>] [-ORDER <str>] [-BASIN <str>] [-SEGMENTS <str>] [-BASINS <str>] [-NODES <str>] [-THRESHOLD <num>]
  -DEM:<str>       	Elevation
	Grid (input)
  -DIRECTION:<str> 	Flow Direction
	Grid (optional output)
  -CONNECTION:<str>	Flow Connectivity
	Grid (optional output)
  -ORDER:<str>     	Strahler Order
	Grid (optional output)
  -BASIN:<str>     	Drainage Basins
	Grid (optional output)
  -SEGMENTS:<str>  	Channels
	Shapes (output)
  -BASINS:<str>    	Drainage Basins
	Shapes (output)
  -NODES:<str>     	Junctions
	Shapes (optional output)
  -THRESHOLD:<num> 	Threshold
	Integer
	Minimum: 1
	Default: 5