Tool Overland Flow
A simple overland flow simulation.
- Author: O.Conrad (c) 2020
- Menu: Simulation|Hydrology
Parameters
| Name | Type | Identifier | Description | Constraints | |
|---|---|---|---|---|---|
| Input | Elevation | Grid, input | DEM | - | - |
| Roughness (*) | Grid, input, optional | ROUGHNESS | Ks Strickler = 1/n Manning | - | |
| Interception Capacity [mm] (*) | Grid, input, optional | INTER_MAX | - | - | |
| Ponding Capacity [mm] (*) | Grid, input, optional | POND_MAX | - | - | |
| Infiltration Capacity [mm/h] (*) | Grid, input, optional | INFIL_MAX | - | - | |
| Precipitation [mm/h] (*) | Grid, input, optional | PRECIP | - | - | |
| Potential Evapotranspiration [mm/h] (*) | Grid, input, optional | ET_POT | - | - | |
| Output | Interception [mm] | Grid, output | INTERCEPT | - | - |
| Ponding [mm] | Grid, output | PONDING | - | - | |
| Infiltration [mm] | Grid, output | INFILTRAT | - | - | |
| Flow [mm] | Grid, output | FLOW | - | - | |
| Velocity [m/h] (*) | Grid, output, optional | VELOCITY | - | - | |
| Overland Flow Summary (*) | Table, output, optional | SUMMARY | - | - | |
| Options | Grid System | Grid system | PARAMETERS_GRID_SYSTEM | - | - |
| Default | Floating point | ROUGHNESS_DEFAULT | default value if no grid has been selected | Minimum: 0.000000 Default: 20.000000 | |
| Type | Choice | STRICKLER | Ks Strickler = 1/n Gauckler-Manning | Available Choices: [0] Strickler Ks, [m^1/3 / s] [1] Gauckler-Manning n, [s / m^1/3] Default: 0 | |
| Default | Floating point | INTER_MAX_DEFAULT | default value if no grid has been selected | Minimum: 0.000000 Default: 0.000000 | |
| Default | Floating point | POND_MAX_DEFAULT | default value if no grid has been selected | Minimum: 0.000000 Default: 0.000000 | |
| Default | Floating point | INFIL_MAX_DEFAULT | default value if no grid has been selected | Minimum: 0.000000 Default: 0.000000 | |
| Weather Grid System | Grid system | WEATHER | - | - | |
| Default | Floating point | PRECIP_DEFAULT | default value if no grid has been selected | Minimum: 0.000000 Default: 0.000000 | |
| Default | Floating point | ET_POT_DEFAULT | default value if no grid has been selected | Minimum: 0.000000 Default: 0.000000 | |
| Reset | Boolean | RESET | If checked storages (flow, ponding, interception) and sinks (infiltration) will be set to zero. | Default: 1 | |
| Simulation Time [h] | Floating point | TIME_STOP | Simulation time in hours. | Minimum: 0.000000 Default: 6.000000 | |
| Time Step Adjustment | Floating point | TIME_STEP | Choosing a lower value will result in a better numerical precision but also in a longer calculation time. | Minimum: 0.010000 Maximum: 1.000000 Default: 0.500000 | |
| Overland Flow Summary | Boolean | FLOW_OUT | Report the amount of overland flow that left the covered area. | Default: 0 | |
| Map Update Frequency [Minutes] | Floating point | TIME_UPDATE | Map update frequency in minutes. Set to zero to update each simulation time step. | Minimum: 0.000000 Default: 1.000000 | |
| Fixed Color Stretch for Flow | Boolean | UPDATE_FLOW_FIXED | - | Default: 0 | |
| Fixed Color Stretch | Value range | UPDATE_FLOW_RANGE | - | - | |
| Fixed Color Stretch for Velocity | Boolean | UPDATE_VELO_FIXED | - | Default: 1 | |
| Fixed Color Stretch | Value range | UPDATE_VELO_RANGE | - | - | |
| (*) optional | |||||
Command-line
Usage: saga_cmd sim_hydrology 9 [-DEM <str>] [-ROUGHNESS <str>] [-ROUGHNESS_DEFAULT <double>] [-STRICKLER <str>] [-INTER_MAX <str>] [-INTER_MAX_DEFAULT <double>] [-POND_MAX <str>] [-POND_MAX_DEFAULT <double>] [-INFIL_MAX <str>] [-INFIL_MAX_DEFAULT <double>] [-INTERCEPT <str>] [-PONDING <str>] [-INFILTRAT <str>] [-FLOW <str>] [-VELOCITY <str>] [-PRECIP <str>] [-PRECIP_DEFAULT <double>] [-ET_POT <str>] [-ET_POT_DEFAULT <double>] [-RESET <str>] [-TIME_STOP <double>] [-TIME_STEP <double>] [-FLOW_OUT <str>] [-SUMMARY <str>] [-TIME_UPDATE <double>] [-UPDATE_FLOW_FIXED <str>] [-UPDATE_FLOW_RANGE_MIN <double>] [-UPDATE_FLOW_RANGE_MAX <double>] [-UPDATE_VELO_FIXED <str>] [-UPDATE_VELO_RANGE_MIN <double>] [-UPDATE_VELO_RANGE_MAX <double>] -DEM:<str> Elevation Grid, input -ROUGHNESS:<str> Roughness Grid, input, optional -ROUGHNESS_DEFAULT:<double> Default Floating point Minimum: 0.000000 Default: 20.000000 -STRICKLER:<str> Type Choice Available Choices: [0] Strickler Ks, [m^1/3 / s] [1] Gauckler-Manning n, [s / m^1/3] Default: 0 -INTER_MAX:<str> Interception Capacity [mm] Grid, input, optional -INTER_MAX_DEFAULT:<double> Default Floating point Minimum: 0.000000 Default: 0.000000 -POND_MAX:<str> Ponding Capacity [mm] Grid, input, optional -POND_MAX_DEFAULT:<double> Default Floating point Minimum: 0.000000 Default: 0.000000 -INFIL_MAX:<str> Infiltration Capacity [mm/h] Grid, input, optional -INFIL_MAX_DEFAULT:<double> Default Floating point Minimum: 0.000000 Default: 0.000000 -INTERCEPT:<str> Interception [mm] Grid, output -PONDING:<str> Ponding [mm] Grid, output -INFILTRAT:<str> Infiltration [mm] Grid, output -FLOW:<str> Flow [mm] Grid, output -VELOCITY:<str> Velocity [m/h] Grid, output, optional -PRECIP:<str> Precipitation [mm/h] Grid, input, optional -PRECIP_DEFAULT:<double> Default Floating point Minimum: 0.000000 Default: 0.000000 -ET_POT:<str> Potential Evapotranspiration [mm/h] Grid, input, optional -ET_POT_DEFAULT:<double> Default Floating point Minimum: 0.000000 Default: 0.000000 -RESET:<str> Reset Boolean Default: 1 -TIME_STOP:<double> Simulation Time [h] Floating point Minimum: 0.000000 Default: 6.000000 -TIME_STEP:<double> Time Step Adjustment Floating point Minimum: 0.010000 Maximum: 1.000000 Default: 0.500000 -FLOW_OUT:<str> Overland Flow Summary Boolean Default: 0 -SUMMARY:<str> Overland Flow Summary Table, output, optional -TIME_UPDATE:<double> Map Update Frequency [Minutes] Floating point Minimum: 0.000000 Default: 1.000000 -UPDATE_FLOW_FIXED:<str> Fixed Color Stretch for Flow Boolean Default: 0 -UPDATE_FLOW_RANGE_MIN:<double> Fixed Color Stretch Value range -UPDATE_FLOW_RANGE_MAX:<double> Fixed Color Stretch Value range -UPDATE_VELO_FIXED:<str> Fixed Color Stretch for Velocity Boolean Default: 1 -UPDATE_VELO_RANGE_MIN:<double> Fixed Color Stretch Value range -UPDATE_VELO_RANGE_MAX:<double> Fixed Color Stretch Value range