High res version.
Nice, it looks as if a river has flooded inland, the water texture matches too because the bumps are actually flowing in the direction of the river.
Yeah, that was a happy accident. I haven't yet figured out how to 'rotate' a texture to go a different direction. Rotating the object itself doesn't seem to work.
Yeah, I think the function will always flow in the same direction...The only other option would be to rotate everything else so it fits the water pattern....And just reposition the camera and Sun so you get back the point of view that you originally had.