SAGA 9.4.2 | Tool Library Documentation

LS Factor (One Step)


Description

This is a simple to use one step tool to derive the LS Factor of the Universal Soil Loss Equation (USLE) from a Digital Elevatin Model (DEM). It combines DEM preprocessing (sink removal), flow accumulation and specific catchment area (SCA) derivation, slope and final LS factor calculation exposing only the most important options.


References


Parameters

 NameTypeIdentifierDescriptionConstraints
InputDEMgrid, inputDEM--
OutputLS Factorgrid, outputLS_FACTOR--
OptionsGrid Systemgrid systemGRID_SYSTEM--
Feet ConversionbooleanFEETNeeded if area and lengths come from coordinates measured in feet.Default: 0
MethodchoiceLS_METHOD-Available Choices: [0] Moore et al. 1991 [1] Desmond & Govers 1996 Default: 0
PreprocessingchoicePREPROCESSING-Available Choices: [0] none [1] Fill Sinks (Wang & Liu) [2] Sink Removal Default: 0
Minimum Slopefloating point numberMINSLOPEMinimum slope (degree) for filled areas.Minimum: 0.000000 Default: 0.000100

Command Line


Usage: saga_cmd ta_hydrology ls_factor [-DEM ] [-LS_FACTOR ] [-FEET ] [-LS_METHOD ] [-PREPROCESSING ] [-MINSLOPE ]
  -DEM:          	DEM
	grid, input
  -LS_FACTOR:    	LS Factor
	grid, output
  -FEET:         	Feet Conversion
	boolean
	Default: 0
  -LS_METHOD:    	Method
	choice
	Available Choices:
	[0] Moore et al. 1991
	[1] Desmond & Govers 1996
	Default: 0
  -PREPROCESSING:	Preprocessing
	choice
	Available Choices:
	[0] none
	[1] Fill Sinks (Wang & Liu)
	[2] Sink Removal
	Default: 0
  -MINSLOPE:  	Minimum Slope
	floating point number
	Minimum: 0.000000
	Default: 0.000100