Surely there's half a chance it's fake? There's jet blast coming from both the engines, and the water's going into the one on the left (as you look at it). Surely an engine couldn't keep running if it was sucking in this much water? Secondly the taxiway centre-line is reflected in the nose. It wouldn't reflect so straight if it were underwater.
Finally there's the fact that the plane was either parked on a taxiway which subsequently flooded, which is unlikely, or the pilots tried to forge their way through a five-foot deep lake on the way to the runway, and I'm not sure that's likely.
Willing to be corrected though.