Quera water flow example

Hi !!
I am a  student at University of Tokyo in japan.
I want to learn Rain flow over surface script for design class
I can watch the this movie in the URL(http://quelea.alexjfischer.com/example-scripts/)
But I cannot download this GH script there
so, Could you give me this GH script?

If you can ,also give me Flow Down Surface Force GH sript(https://www.youtube.com/watch?v=8mGoIR0Shi8&t=27s )
 
Best regard