I'm no electrician but I think standing in water that is actively pouring out of electrical boxes is probably not the best move
The water touches ground so the fuses should have done their work already. If the electricians have done it right, that is.
Fuses/breakers trip at many times the current it takes to kill you. Only GFCI would help here. Flood water is full of contamination that makes it conduct easily. In my experience the danger zone is about 1/4 inch per volt starting at around 50 volts or so. But I'm still alive so take that with a grain of, ahem, salt.
I had an electrical panel have water cascade through it. I tried to tell my girlfriend not to touch it. You can pretty much guess what happened next.
I believe that's called aphasia you should probably get that looked at
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