I was wondering if there was a tool in which you can assign the ID of a manhole to all manholes (or pipes) that connect upstream. To illustrate, I have have a backbone representation of a sewer network for hydraulic modeling purposes. I would like to automatically assign the IDs of modeled manholes along the backbone network to non-modeled manholes that connect downstream to a modeled manhole. Hopefully the attached image illustrates my question.
Thanks in advance!