And what of the falls themselves, you cry? Tell us, for we must know! Well, they're still there. Again, there's not a lot you can do with a redundant set of falls that no longer have water running over them. They're sealed off by sluice gates and look quite picturesque when they're dry ...
... but even more picturesque when the sluices open for 10 minutes at 3pm every day to relieve pressure and 300,000 litres a second comes barrelling down the gorge.
A bit like watching those tsunami videos, it all seems to be happening so slowly. The water seems to take forever to reach you and yet suddenly it's there and you're really quite glad that you're not, and are in fact on the 30m high bridge overlooking the scene.
If Ozymandias had dug into rock rather than built statues of himself out of it, there would be a lot more evidence of his works to despair at.