HI, I do not know your project nor whom you are working for.
However I have worked professionally as a consultant On Many Water Supply, a few Sewerage projects and to a lesser extent on Stormwater projects. I also had my own water supply network software (before commercial software were easily available) with which I have done network planning for many large projects in different parts of the country. With that background I would say For a large city these kinds of projects involve a large PAID team with expertise in their own areas. Say my area was design and Hydraulics analysis but I can not work without another member without a GOOD site experience. So trying to look at these things just a s a software problems and getting help online may not really work. The most important part to start with is a real land survey to get actual ground levels. There is no way they can be estimated from anywhere. Unfortunately newer people do not understand the complexity of the issues. Also we try to fudge everywhere including survey. Your exercise will also involve analyzing the entire network existing and proposed. So any help from someone other than without a domain experience and responsibility against payment will be much less than a milligram of lipstick. If you think you can put together things from here and there, you cannot. If you could then you would not have asked here. *Availabee Digital elevation model is useless (inadequate) for this project.* Knowing Bangalore as the city where I will shift in near future and I live there (ALSO). I would say the following specifically about the city. Since it is highly undulated city there are advantages that you will get a good gravity assist in the network. But at the same time you will have many points from which sewage will have to be collected and pumped to the STP. This complexity and planning is HUGE. I just hope (for the sake of the city) that nonone is working with a shoestring budget on this one. Or the shoestrings are controlled by some other strings. Apologies for being forthright and clear on the issue. On Thursday, March 23, 2017 at 3:52:21 PM UTC+5:30, Nagesh Aras wrote: > > Hi > > > I would like help from users or QGIS (or ArcGIS) in analyzing the sewage > scenario in Bangalore. > > The rough idea is as follows: > > 1. We have the BWSSB STP locations and their capacity. > 2. We have the rain precipitation figures > 3. By analyzing the terrain (e.g. Digital Elevation Model from ISRO), can > we find the watersheds (catchment areas) for each STP? > 4. Can we estimate how much sewage and rainwater each STPwill get on a > day-to-day (or month-to-month) basis? > > Thanks in advance! > > Regards, > Nagesh > 9448239985 -- Datameet is a community of Data Science enthusiasts in India. Know more about us by visiting http://datameet.org --- You received this message because you are subscribed to the Google Groups "datameet" group. To unsubscribe from this group and stop receiving emails from it, send an email to datameet+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
