Water4 problem with waterfall particles in unity

As you can see in the picture, most part of the particles of the waterfall are not shown.
And the top of the waterfall it doesn’t match too much with the water4 plane… (from Standard Assets)
How can I fix it?

I have tried more water assets. With others it doesn’t happen this, but the water in my scene doesn’t work like in the demo scene included.

I have tried this:

This assets looks very well, but then in my project didn’t even work.

How can I made a river with waterfall?
Thank you.

Finally found the solution:

I went to the water material and change render from shader to geometry.
Now it works well, no more fake waterfalls!!