Workflow for adding Pipe Systems to QGIS? [closed]

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I want to layout a concept design for a sewer main in QGIS. I have a variety of background information:

I want to layout the system to get the following functionality, if possible:

I want to start off on the right foot, and seek any guidance, if possible.

Hi Bill, I didnt end up pursuing the EPANET as it is a bit above my skill level (very basic!). However it was useful to know what was available and what tools were available. I come from an engineering background, and therefore am not a natural GIS user. As such I found it useful to know if the software is appropriate for this. Due to time pressures on porjects it is difficult to explore this further, but I hope that in the coming months I may be able to look into things further (hopefully before my next project starts!). Thanks for your detailed response. — boberdorf, Commented Oct 15, 2014 at 9:48

PolyGeo · Accepted Answer · 2018-12-26 12:22:12Z

Epanet

Have a look at Epanet and the plugins for it in QGIS.

and there is another epanet connector in the Plugins Manager menu which I haven't had any experience with.

Whilst Epanet is for pressurised pipelines and it deals with different anaylsis to your interests, it deals with a lot of the same concepts.

For instance in GIS a point/node does not natively have an orientation and so GHydraulics deals with this (afaik) by using very small lines as nodes.

Just some notes

Whilst the DEM will be useful, it is hard for us to evaluate it without more information. Is the topography (i.e. the DEM) a rigorous indicator of the invert of sewer pipes or does the sewer line traverse ridges and gullies?
to what resolution is the aerial image? Does it show a scar on the landscape of the buried sewer line or more likely the paving and landscape obscure the pipe alignment. Do you have to plot other services like roads?
I'd be surprised if there is all this ancillary data available that there is not some existing schematic of the sewer alignment which shows direction of flow etc.
Unless you want to create an entirely theoretical model, some real flow and elevation data would be important for your work to have value to most end users. I can imagine excavating to the surface of a sample of pipes and taking elevation measurements. There are a range of technologies for sampling flows in pipes and providing estimates of the loadings.

Another EPANET tool is the Processing plugin provider by Oslandia. oslandia.com/qgis-plugin-for-water-management-en.html and plugins.qgis.org/plugins/qgis_epanet and github.com/Oslandia/qgis-epanet and — dakcarto, Commented Sep 5, 2014 at 0:04