Obtain upstream downstream structure

[MingHan]

Hi Everyone

    Here is a stupid question. I have delineated a watershed into several catchments. some catchments do not have a stream.

    How could I obtain upstream and downstream structure? 

Thanks

Ming  

[DanPatterson]

are you following these help topics?

Watershed (Spatial Analyst)—ArcGIS Pro | Documentation

How Watershed works—ArcGIS Pro | Documentation

Did you use pour points?

[MingHan]

That exactly what I did. I could obtain catchment which is the output of the Watershed function.  What I need is the upstream and downstream structure of these catchments. For example catchment 1 drainage to catchment 2; catchment 3 drainages to catchment 10;.....

I noticed that the stream link can provide this information. But in my case, not all catchment has streams 

Thanks 

Ming  

[MingHan]

I guess my question is that is there any function similar to StreamToFeature, but the input is catchment raster not stream raster?