There is something wrong with the water. It looks like it is frozen, about to fall catastrophically from the ramp, or looks like jelly. When water flows in a ramp, it doesn't cover it with a that thick depth. A few millimetres of it with a foamy aspect would give a more realistic effect. If you play COD and you still have the very first game, I suggest looking at the dam to see how water flowing through a ramp should look like. It is the only aspect I would change. The rest of the map looks fantastic and the textures are great.
P.S.:You should not use that prayer sound. The words "Avé Maria" are quite noticeable. You should use some other kind of chanting.