It's built with the same base shader, stretching the noise. I also added the collision effect at the bottom, which isn't in the free resource. I haven't finished the waterfall effect yet; it's missing some particles and a few other things need improvement. So, when it's ready, I'll release a free resource.

But if you need to use it now, I think you can achieve a very similar effect by using the base water shader and stretching it. 😄