Module Flow Accumulation (QM of ESP)
Calculation of flow accumulation, aka upslope contributing area, with the multiple flow direction method after Freeman (1991).
References:
Freeman, G.T. (1991): Calculating catchment area with divergent flow based on a rectangular grid. Computers & Geosciences, 17, pp.413-422.
Pelletier, J.D. (2008): Quantitative Modeling of Earth Surface Processes. Cambridge, 295p.
- Author: O.Conrad (c) 2013
- Menu: Terrain Analysis|Hydrology|Flow Accumulation
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 | Grid system | - |
| Preprocessing | Choice | PREPROC | - | Available Choices:
[0] none
[1] fill sinks temporarily
[2] fill sinks permanently
Default: 1 |
| Fill Increment | Floating point | DZFILL | - | Minimum: 0.000000
Default: 0.010000 |
Command-line
Usage: saga_cmd sim_qm_of_esp 2 [-DEM <str>] [-FLOW <str>] [-PREPROC <str>] [-DZFILL <double>]
-DEM:<str> DEM
Grid (input)
-FLOW:<str> Contributing Area
Grid (output)
-PREPROC:<str> Preprocessing
Choice
Available Choices:
[0] none
[1] fill sinks temporarily
[2] fill sinks permanently
Default: 1
-DZFILL:<double> Fill Increment
Floating point
Minimum: 0.000000
Default: 0.010000