I've been searching through Google image to find the most useful maps to share with you.
I quite like this old map because it clearly shows the location of the site of the Hellenistic city in an area now a suburb of the modern city. Plus silting is indicated and the surrounding hills and how the Ionian colonists and later Hellenistic era Greeks sensibly built their cities and harbours north and south of the river deltas.
History and Geography interact.
This is why a GOOD Classicist truly is a generalist who knows some science too?!
One more map showing the surrounding areas and how very lucky or careful the colonists were picking their site!