Not only you have met the expectations of those who waited with trepidation the rivers and lakes (almost all of us), but you did just fine!
Real water with transparency and reflections .... congratulations !!!
Only a few brief questions ...
You will be immersed in this water and get to the bottom of the river / lake (like the sea)?
If you build a river where there is a large difference in level there will be a waterfall or something?
The river water "flows" or is still early for this effect?
(Sorry, but I did not understand the answer you gave to Zeos on slope)
However again congratulations, really a beautiful realization !!!