Migrating Arc Hydro data to Stormwater Utilities Network

[MarkWasdahl1]

I attended the Sep. 4 Utility Network Workgroup meeting and am looking forward to the October 9 one. Currently, we have our Stormwater data in Arc Hydro. Looking forward to migrating to the Stormwater Utility Network Foundation solution (no customizing). We have created a GDB in UN but have some concerns on the data migration. Arc Hydro maintains elevations on the point features while in the Utility Network elevations are on the line features. Do we migrate off the ArcMap Geometric network version of Arc Hydro or do we upgrade to Trace Network first then migrate?

[RobertKrisher]

You can always add fields to classes in the Utility Network Foundations to meet your needs. I'd recommend you do a prototype by using the Migration toolset/Wizard (released in ArcGIS Pro 3.5, tutorial here) to create a new utility network model based on your current schema. This process is only a few more steps than turning your data into a track network. From there, you can evaluate your workflows in a like-for-like model before deciding whether to translate all your data to a new schema (tutorial here).

If you're going to be at IMGIS this year, there is a session about how to integrate a stormwater utility network (Foundation or custom) into the Arc Hydro tools.

[MarkWasdahl1]

We do not want to create a new utility network model based upon current schema of Arc Hydro. We want to move Arc Hydro based data into the Stormwater Utility Network Foundation, industry standard and no customization. The Migration toolset seems to enforce making a new network model based upon current schema rather than the Utility Network Foundation. Unfortunately, I will not be at IMGIS.

[NoahWilliams_ITD]

Hi Robert,

I think the concern is - do any of the conversion or migrations tools assist with moving elevation values from points (where elevation was stored in ArcHydro), to the Upstream/Downstream Elevation fields in the Stormwater Utility Network solution?

Thanks,

Noah

[RobertKrisher]

I'm not aware of any custom tools built to do this, but it could be done with some Python. You would populate the upstream elevation of a pipe with the elevation of the point feature at the first/from vertex of the line, and the downstream elevation of a pipe with the elevation of the point feature at the last/to vertex of the line.

[MarkWasdahl1]

Our path forward then will be to create, within ArcHydro, custom fields populated with values that match the schema of the Stormwater Utility Network. Then we would append the modified ArcHydro data and Append to the appropriate Feature Class in UN. Then, either we build a Python custom tool or manually transpose elevation values within UN.