WATERFALL MESH AND MODELLING IN MAYA

Material in UE4

I create waterfall material and then create its instance to control the parameter groups. Color and vfx can be controlled through adjusting these parameters.

Here I create black and white texture in Photoshop for waterfall.

I also use fresnel function

Blendmode should be translucent in this case.

https://docs.unrealengine.com/4.27/en-US/RenderingAndGraphics/Materials/HowTo/Fresnel/

I use additive as blend mode in order to achieve a transparent waterfall effect.