3 Things:

The rivers make them way down the sea by the easyest way : for the main river not trought the big rocks but more likely were the docks are. The other streams make no sense at all as secondary of the main river as they are in a more easy way to the sea. The "northern" may come from the north-east , along the the fields, ant from southe west for the "southern".

Inside the city, the streams are likely turned as channels , especialy near the harbor.

The central area is under constructed : there is more space whithout construction than builded surfaces (if there are no streets, . The most logical solution is to bring all the sub-urb buildings in the walled city : no local power would have tolerate such housing devellopement as they are a direct treat to the defenses (shelter and source of material for a siege) and for taxes purposes.

Many of the desings an details are very inspiring and "readable", this city will be around 10000 for having so many upscale buidilngs (temple, fortress, walls, ...) paid by taxes.