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