[?] long river waterplanes, the best way?

[Bluto Blutarsky]

Hi guys,
i'm working on this 4x4 map and i'm looking for the best way to reproduce the river



dark blue = water
light blue = gravel river bed

i don't want to use the seawater level because the river is not so flat (there is a 20mt gap between north and south ends) so i guess i must create new waterplanes based on the river shape (like fushe) to got the bests results instead of using the quinling rectangles (also because i need to use about 20 pieces) and the waterfalls workaround

the last question is about the water stream direction, there is only a stream direction for all the water objects o i can give a direction for every piece? i've found nothing about on the forum (probably cuz i'm a noob =P) and i try to understand it by demolishing qinling but seems there only a direction for the water, anyone can confirm? should be bad while reproducing a narrow S shaped river...



tnx for the support =)


Blutarsky