Flow Accumulation (QM of ESP)

Author: O.Conrad (c) 2013
Menu: Terrain Analysis | Hydrology | Flow Accumulation | Alternatives

Description

Calculation of flow accumulation, aka upslope contributing area, with the multiple flow direction method after Freeman (1991).

This tool implements suggested code examples from the text book Quantitative Modeling of Earth Surface Processes (Pelletier 2008) and serves as demonstration on code adaptions for the SAGA API. Note that this tool may be of limited use for operational purposes!

References

Freeman, G.T. (1991): Calculating catchment area with divergent flow based on a regular grid. Computers and Geosciences, 17:413-22. doi:10.1016/0098-3004(91)90048-I.
Pelletier, J.D. (2008): Quantitative Modeling of Earth Surface Processes. Cambridge, 295p. doi:10.1017/CBO9780511813849.

Parameters

	Name	Type	Identifier	Description	Constraints
Input	DEM	grid, input	`DEM`	-	-
Output	Contributing Area	grid, output	`FLOW`	-	-
Options	Grid System	grid system	`PARAMETERS_GRID_SYSTEM`	-	-
	Preprocessing	choice	`PREPROC`	-	Available Choices: [0] none [1] fill sinks temporarily [2] fill sinks permanently Default: 1
	Fill Increment	floating point number	`DZFILL`	-	Minimum: 0.000000 Default: 0.010000

Command Line


Usage: saga_cmd sim_qm_of_esp 2 [-DEM ] [-FLOW ] [-PREPROC ] [-DZFILL ]
  -DEM:      	DEM
	grid, input
  -FLOW:     	Contributing Area
	grid, output
  -PREPROC:  	Preprocessing
	choice
	Available Choices:
	[0] none
	[1] fill sinks temporarily
	[2] fill sinks permanently
	Default: 1
  -DZFILL:	Fill Increment
	floating point number
	Minimum: 0.000000
	Default: 0.010000