Dry Rivers

Hi guys, I've had this problem for a while, not sure what I installed that originally created this problem.
Here's the deal my smaller creaks you know the ones that are just a ditch on the ground do not have water in them, if I look down into it it's just a plain gray texture.
Any idea what it the name of the file that handles that texture? And where I could find a copy of it?
Probably in one of my 4 disks
Thanks in advance
Dan
Here's the deal my smaller creaks you know the ones that are just a ditch on the ground do not have water in them, if I look down into it it's just a plain gray texture.
Any idea what it the name of the file that handles that texture? And where I could find a copy of it?

Thanks in advance
Dan