SAGA-GIS Module Library Documentation (v2.1.3)

Module Flow Width and Specific Catchment Area

Flow width and specific catchment area (SCA) calculation.

References:
Gruber, S., Peckham, S. (2008): Land-Surface Parameters and Objects in Hydrology. In: Hengl, T. and Reuter, H.I. [Eds.]: Geomorphometry: Concepts, Software, Applications. Developments in Soil Science, Elsevier, 33:293-308.

Quinn, P.F., Beven, K.J., Chevallier, P., Planchon, O. (1991): The prediction of hillslope flow paths for distributed hydrological modelling using digital terrain models. Hydrological Processes, 5:59-79

Parameters

 NameTypeIdentifierDescriptionConstraints
InputElevationGrid (input)DEM--
Total Catchment Area (TCA) (*)Grid (optional input)TCA--
OutputFlow WidthGrid (output)WIDTH--
Specific Catchment Area (SCA) (*)Grid (optional output)SCA--
OptionsMethodChoiceMETHOD-Available Choices:
[0] Deterministic 8
[1] Multiple Flow Direction (Quinn et al. 1991)
[2] Aspect
Default: 2
(*) optional

Command-line

Usage: saga_cmd ta_hydrology 19 -DEM <str> [-WIDTH <str>] [-TCA <str>] [-SCA <str>] [-METHOD <str>]
  -DEM:<str>   	Elevation
	Grid (input)
  -WIDTH:<str> 	Flow Width
	Grid (output)
  -TCA:<str>   	Total Catchment Area (TCA)
	Grid (optional input)
  -SCA:<str>   	Specific Catchment Area (SCA)
	Grid (optional output)
  -METHOD:<str>	Method
	Choice
	Available Choices:
	[0] Deterministic 8
	[1] Multiple Flow Direction (Quinn et al. 1991)
	[2] Aspect
	Default: 2