Tool Terrain Flooding (interactive)

The tool allows one to flood a digital elevation model for a given water level. The water level can be provided either as absolute height or relative to the DEM.
If the water level is given relative to the DEM, the tool can model a constant water level starting from the seed cell, or a water level that is always relative to the currently processed cell. This way also inclined water surfaces, e.g. along a river, can be modelled. Note that this usually requires rather small relative water levels in order to prevent the flooding of the complete DEM; the functionality is most suited to generate a segment (connected component) of a river bed.

Author: V. Wichmann (c) 2022
Menu: Terrain Analysis|Hydrology|Miscellaneous

Parameters

	Name	Type	Identifier	Description	Constraints
Input	DEM	Grid, input	`DEM`	The digital elevation model to flood.	-
Output	Water Body	Grid, output	`WATER_BODY`	The extent of the water body, labeled with local water depth [map units].	-
Output	Flooded DEM (*)	Grid, output, optional	`DEM_FLOODED`	The flooded digital elevation model.	-
Options	Grid System	Grid system	`PARAMETERS_GRID_SYSTEM`	-	-
	Water Level	Floating point	`WATER_LEVEL`	The local water level, given either relative to the DEM or as absolute height [map units].	Default: 0.500000
	Water Level Reference	Choice	`LEVEL_REFERENCE`	-	Available Choices: [0] level is given relative to DEM [1] level is given as absolute water height Default: 0
	Constant Water Level	Boolean	`CONSTANT_LEVEL`	Model the water level as constant. Otherwise the specified level is always taken as relative to the currently processed cell. This option is only available if the water level reference is relative to the DEM.	Default: 1
	Cumulative	Boolean	`CUMULATIVE`	Do not reset the water body grid before water level is calculated for the next point clicked.	Default: 0
(*) optional

Command-line

this interactive tool can not be executed.