Running water

I’ve seen in some maps that people have directional water or running water (looks like a running lake), i need to know how to make this for some running water in a pipe
http://i13.servimg.com/u/f13/14/03/00/29/deathr11.jpg

It’s a model with a scrolling texture on it like in cs_militia (river01.vmt). The texture is a generic type, so you can use it on both models and brushes with no problem.

do you know the name of texture?

^

In the CSS gcf, obviously.