This is the PCB of a good old Linksys WRT54GL that was completely submerged for approximately one month during the Great Thailand Flood of 2011. Oh, the router was actually placed on a desk, the water level was much much higher than that.
My domain and database servers were all safe since they were on the second floor, but I had to evacuate them (by boat) to another site, which I'll write in detail the next time. Computers that were on the ground floor were all dead, either directly by water or rusted by the humidity. Some I could actually salvage the hard drives or CPU's since the water level was lower, others were completely underwater.