With some more testing I determined that it's not the video card. I popped in my old nVidia 5200, and my fingers were still momentarily numb, and a number expletives also popped out of my mouth; partly because of the uncomfortable number of volts that traveled through my hand and arm, but also at the fact that I still have no solution.
Once again, I consulted with my father, and he thinks it's likely that my motherboard is fried. I find this unlikely, but the only logical deduction. The only other thing that I can think of, and the only other constant, is that I've been using an HDMI adapter for an old... what is it, 16 pin video cable? The latest non-HD hook up. I would go test this, however I've had my fair share of elctro-shock psychology for the day.
The reason why I don't think that it's the mobo, is that there wasn't enough water to get into the case, much less reach the motherboard. It's possible that the water shorted something else out, and that it caused a surge into the mobo via another cable, but the bottom of of my case is completely water stain free. The only thing that could have caused this was my subwoofer, which had water around and under it, but there doesn't appear any easy place for water to get into it that quickly.
As of now, I am completely at a loss as for what caused this to happen. It seems that my mobo is fried, and that the flood had nothing to do with it whatsoever.
I still can't be sure that my motherboard is actually at fault, however. If anyone has any ideas on other tests, that would be wonderful. I would start my machine up, but I'm afraid I'll need to use a fire extinguisher on it...