r.lake
r.lake.coords - Fills lake at given point to given level.
Raster (r.*)
QgsProcessingParameterRasterLayer|elevation|Elevation|None|False
QgsProcessingParameterNumber|water_level|Water level|QgsProcessingParameterNumber.Double|1.0|False|None|None
QgsProcessingParameterPoint|coordinates|Seed point coordinates|0,0|False
QgsProcessingParameterBoolean|-n|Use negative depth values for lake raster layer|False
QgsProcessingParameterRasterDestination|lake|Lake