The import stream / flow lines menu option allows for the import of a stream alignment file into the CatchmentSIM streams database. This option should be used if a DEM is to be interpolated by contour rasterisation and watercourse interpolation or if the DEM Conditioning >> Enforce Streams algorithm is to be used.
Since stream alignment GIS files do not usually have elevation tags, you will not be requested to identify a GIS data column for elevation values as was required for the import contours option.
