Full Video: https://www.youtube.com/watch?v=_gQdxe9TP1g
Shader code for shallow water equation referenced from:
https://www.shadertoy.com/view/Xsd3DB
http://polycu.be/edit/?h=W2L7zN
And adapted to unity using CustomRenderTexture as a double buffer.
Amplify Shader Function is included to incorporate Shallow Water into other shaders.