In this tutorial, you will learn step-by-step how to create a stunning Stylized Waterfall Effect in Unreal Engine 5 Niagara from scratch! 
We break down custom shader graph setups, dynamic wave distortion, animated splash particles, and ground flow materials.
https://dev.epicgames.com/community/learning/tutorials/Jdvbm/unreal-engine-stylized-waterfall-in-ue5-niagara-tutorial