Before moving on to the rug I suggest you stop a future problem by laying down a plywood floor over 2x4's. While it will not stop a flood, it will give ample protection from small spills. You can put the vinyl over the plywood and still use the rug.
Wool Rugs
A sump pump failure led to water getting into my basement listening room and the need to replace the wall to wall carpet that was in the house when we bought it. I have decided on vinyl tile with wool area rugs; has anyone had any problems with static electricity from their use?