Flow Accumulation (One Step)
| Author(s) | O.Conrad (c) 2019 |
| Library ID | ta_hydrology |
| Tool ID | flow_accumulation |
| Version | 1.0 |
| Menu | Terrain Analysis | Hydrology | Flow Accumulation |
Description
This is a simple to use one step tool to derive flow accumulation from a Digital Terrain Model. It includes a preprocessing followed by a call to 'Flow Accumulation (Top-Down) exposing only the most important options.
Parameters
| | Name | Type | Identifier | Description | Constraints |
|---|
| Input | Elevation | grid, input | DEM | - | - |
| Output | Flow Accumulation | grid, output | TCA | The flow accumulation, a.k.a. Total Catchment Area (TCA) | - |
| Specific Catchment Area | grid, output, optional | SCA | - | - |
| Options | Grid System | grid system | GRID_SYSTEM | - | - |
| Preprocessing | choice | PREPROCESSING | - | Available Choices:
[0] Fill Sinks (Wang & Liu)
[1] Sink Removal
Default: 0 |
| Flow Routing | choice | FLOW_ROUTING | - | Available Choices:
[0] Deterministic 8
[1] Rho 8
[2] Braunschweiger Reliefmodell
[3] Deterministic Infinity
[4] Multiple Flow Direction
[5] Multiple Triangular Flow Direction
[6] Multiple Maximum Downslope Gradient Based Flow Direction
Default: 0 |
Command Line
Usage: saga_cmd ta_hydrology flow_accumulation [-DEM ] [-TCA ] [-SCA ] [-PREPROCESSING ] [-FLOW_ROUTING ]
-DEM: Elevation
grid, input
-TCA: Flow Accumulation
grid, output
-SCA: Specific Catchment Area
grid, output, optional
-PREPROCESSING:
Preprocessing
choice
Available Choices:
[0] Fill Sinks (Wang & Liu)
[1] Sink Removal
Default: 0
-FLOW_ROUTING:
Flow Routing
choice
Available Choices:
[0] Deterministic 8
[1] Rho 8
[2] Braunschweiger Reliefmodell
[3] Deterministic Infinity
[4] Multiple Flow Direction
[5] Multiple Triangular Flow Direction
[6] Multiple Maximum Downslope Gradient Based Flow Direction
Default: 0