The provinces are still empty at the moment. I'm working on improving the Central Asia zone before getting to that
Now, onto the Oxian issue. It looks like in making this map, I misplaced a couple of rivers and so will be revisiting the whole region. The first task is to actually place the rivers properly, which leads to the first problem: the position of the Oxus. It currently flows into the Aral sea, just to the east of the Caspian, but
this was not always the case. I haven't been able to read the book yet, but according to that page, Herzfeld concludes that the Oxus flowed into the Caspian Sea at start of our period. This is consistent with the map Hardradi found (VERY nice find, by the way!).
The main problem so far has been in finding consistent and reliable maps of the area prior to the major Soviet works in redirecting the rivers in the area for local irrigation in the '60s, but the best lead I have so far is
this map from a
scientific paper, which gives a nice outline of where the rivers
used to run.
Using that map as a guide, I've worked out the following:
1 - Iaxartes River (modern Syr Darya). Alexandria Eschate will be placed near the south of the river.
2 - Polytimetos River (modern Zeravshan River). Samarkand/Marakanda will be placed near it.
3 - Oxus River (modern Amu Darya). You'll see that it flows both into the Caspian and the Aral (in game terms there will be a tiny gap, simply because of engine limitations); it apparently managed to change its flow several times over history, and at some point drained into both seas simultaneously. I figure it's safest to represent both possibilities, since sources don't seem to be consistent about it.
Ignore (4), it was meant to represent the Ochus but I'm not completely sold on its location.
Edit: it's also worth noting that the Aral Sea at the time would have been much larger, but I don't intend on changing it as the map probably won't extend quite that far.
Next step: to clean up the provinces in the area