Locations of the ice textures? (making an override)

Hi it's me again!

This time I'm looking for the textures for the ice (rivers etc.) and I wonder if somebody has come across them? I have searched Season files already but so far anything I have tried to override hasn't changed the appearance of the ice. here's some pics of what I have already found I tried to override. And picture of the actual ice on the right. If anyone has any idea where to look I would really appreciate the help!