How to animate a lowpoly waterfall?

I need to do and animate a lowpoly waterfall. I searched for tutorials or examples but there aren’t a lot, only a found highpoly waterfalls. I did a very simple concept of the waterfall, to show it better, any ideas to animate it?(In the project that I have in mind I will add little white particles to simulate foam too, this is only a very fast try)

It’s usually the texture - animated loop.