Generate Catchments from a Shape-file?

Hi
Does anyone know if it´s possible to automatically (or manually) generate Catchments from a shape-file/background layer containing polygons?
Thanks in advance!

Hi Gedda,

I agree with you. That's a problem that we have come up against too in the past as MikeUrban seems to also block the snapping facility in ArcGIS which you could use to trace around the verteces or even the shapes in another layer.

Regards,

Franciscus Maas
Senior Hydraulic Engineer
Opus International Consultants Ltd

I and my college came up with a solution ourselves.
See attached file.

//Gedda