I have recently started writing one of my first stories that I have been bouncing around in my head for a while. Having a background in DND I decided that it would make it easier for me to have a city map drawn out so that I could figure out exactly what it would look like.

For a quick synopsis, my city is in a post-apocalyptic setting where society has regressed to a medieval level after having reached a space travel era. The city is built on the remnants of skyscrapers and the soil is red due to all the metal structures rusting away and it has a high elevation due to terraforming. However, when I went to design rivers and water running through the city I think I went a little overboard

Am I overthinking this? Should I make the design more simple instead of trying to make it more realistic?

https://inkarnate.com/m/Jy6xxn/