Migrating Arc Hydro data to Stormwater Utilities Network

Question

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 · Answer

If you use the simple data mapping/create migration workspace process to get started, it will create the initial mappings, data model, and migration for you (including adding and mapping any fields from your Arc Hydro model). This would do most of the work for you, but you will still need to transpose the elevation values using the method you feel most comfortable with.

MarkWasdahl1 · Answer

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.

RobertKrisher · Answer

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.