It looks good, but the disparity between the tiles with clear water and then everything above that being dirty is really weird. Dirt should be everywhere, or things should be cleaner as you move up. There's no way that all the dirt would just stop above the water. Simply using a different water texture could be enough, but you might need something else or a slight re-detail of the tile parts or something, idk.
That's a pretty good point. I'll either try and make the tiles dirtier, or change to a dirty texture (as well as making the water murkier).