topic Re: Subnet Lines in ArcGIS Utility Network Questions

Subnet Lines

Joshua_Moreno — Thu, 04 Dec 2025 18:53:13 GMT

I have 5 subnetwork controllers and want to symbolize the electric lines (circuits) from these subnetwork controllers each a different color. In doing so, I would assume I would use the subnet line feature but there is nothing in this layer. I had thought that when creating a subnetwork controller and updating the subnetwork, whatever electric line that is connected to the controller gets added to this layer as one continuous line?

Is this incorrect? And if so, how would I go about achieving this?

Thank you!

Re: Subnet Lines

MikeMillerGIS — Thu, 04 Dec 2025 19:07:54 GMT

It depends on what you have set to be aggregated into the subnetline. Check you subnetwork definition and review the aggregated lines.

Re: Subnet Lines

gis_KIWI4 — Thu, 04 Dec 2025 19:34:42 GMT

@Joshua_Moreno - If you can validate and update subnetworks then it's probably what @MikeMillerGIS is suggesting. Ensure the feature types you want to be aggregated are defined in the subnetwork definition.

Another scenario (although unlikely) is that the lines aren't really connected. If you can trace the subnetwork and see if all the lines you are expecting are selected. That would rule out the connectivity issue.

Re: Subnet Lines

Joshua_Moreno — Thu, 04 Dec 2025 19:41:53 GMT

Gotcha, will try this out! Luckily running a connectivity trace does show actual connection between the lines.

Thank you!

Re: Subnet Lines

Joshua_Moreno — Fri, 05 Dec 2025 03:52:43 GMT

So I created my subnetwork definitions and lines are connected using the connected trace but I am still not getting the subnet lines to populate. Also, my electric lines are not showing a subnetwork name (unknown) even when running update subnetwork and update is connected. How can I go about fixing this?

Re: Subnet Lines

MikeMillerGIS — Fri, 05 Dec 2025 12:34:24 GMT

If you have a propagator configured, you need to set the propagated network attribute.

Re: Subnet Lines

Yeaton — Thu, 18 Dec 2025 22:41:40 GMT

Hi MikeMillerGIS,

I am having the same trouble Joshua_Moreno is having, but with a storm water utility network. I don't have a propagator in my network either. Any additional thoughts on why subnet lines aren't being generated?

Re: Subnet Lines

RobertKrisher — Fri, 19 Dec 2025 13:09:07 GMT

@Yeaton have you confirmed that your lines are connected to the right terminal on the subnetwork controller? If the subnetwork doesn't have any lines, then this is likely the case.

If your subnetwork consists of a single line, then it is likely that your first line is acting as a barrier. Check the fields used as condition barriers, like lifecyclestatus, and ensure its marked as in service.

Re: Subnet Lines

Yeaton — Fri, 19 Dec 2025 17:43:44 GMT

Hi Robert,

Turns out I had my terminal set to outlet port rather than inlet port. After switching to inlet port the subnet lines generate.

Many thanks for helping me!

Best,

Aaron Y.