Tidal Bore

I have been known to bang on ad nauseum about the tidal range of the Thames at Richmond, to the extent that people are willing to throw themselves to the mercy of the river to escape further discourse.
Anyway now I have photographic evidence and as they say the camera never lies. so here you go. The River Thames flooding:

The horizontal rail you see is a hand rail and normally the river is about 1.5 - 2 metres below the towpath at this point.