Sorry for the pre-historical up
I made some test, one with the 3danm8r bp:
second with the jakpe bp:
With the bp used in image 1 I got a problem with the translucency material, no water, as you guys can see here:
Same scene without any of custom fog:
Btw, tihs is the texture I used to create the fog in the image 2, its the same used in day 1 in the Firewatch game, I upload in the Google drive cause answers don’t accept .tga files.
I still trying to create something, at least close to the Firewatch fog, if anyone have any ideia how to improve this bp, just comment 
ps. I’m using Forward rendering at this scene.
and thanks 3danm8r and jakpe