Urban Stormwater Subcatchment Delineation

[AMReshadi]

Hi,

I'm quite new to the field and I don't know where to start for this. I am working on a PCSWMM stormwater pollution model for a city that has around 200 stormwater ponds. I need to delineate stormwater catchments for each of these ponds and I have all stormwater infrastructure needed (pipeline shapefile, manholes, etc.). What I need is not delineating based on a DEM raster, but to exactly go ahead based on areas for which stormwater is collected through the drainage network. I would really appreciate it if someone could direct me on this.

Many thanks.

[DeanDjokic]

Arc Hydro might be able to help with your stormwater watershed delineation.  Please review these two documents:

1) Basic concept overview: https://community.esri.com/t5/water-resources-documents/arc-hydro-for-stormwater-overview-v5-pdf/ta-...

2) Detailed processing workflows: https://community.esri.com/t5/water-resources-documents/arc-hydro-stormwater-processing-pdf/ta-p/918...

We are in the process of updating the second document to reflect ArcGIS Pro Arc Hydro tools for stormwater (they are basically the same as in ArcMap version, but the updated document will have all the updated tool interfaces and workflow tweaks).