Sink removal.

Name	Type	Identifier	Description	Constraints
Input
DEM	grid, input	DEM	Digital Elevation Model that has to be processed
Sink Route	grid, input, optional	SINKROUTE
Output
Preprocessed DEM	grid, output, optional	DEM_PREPROC	Preprocessed DEM. If this is not set changes will be stored in the original DEM grid.
Options
Method	choice	METHOD		Available Choices: [0] Deepen Drainage Routes [1] Fill Sinks Default: 1
Threshold	boolean	THRESHOLD		Default: 0
Threshold Height	floating point number	THRSHEIGHT	The maximum depth to which a sink is considered for removal.	Minimum: 0.000000 Default: 100.000000
Epsilon	floating point number	EPSILON	Difference in elevation used to create non-flat gradient conserving filled/carved surfaces.	Minimum: 0.000000 Default: 0.001000