Originally Posted by +ve psi

I live in Vancouver BC and man can it rain here, not usually a big deal until i looked at my spare tire space the other day. I was filled with about 2 inches of water causing the jack and tools to start to rust! Since then i've found that the water is not getting in from the hatch or leaky seals but seems to be coming up from underneath. It seems to be coming from under the plastic walls of the trunk which is above the spare tire well height so the cardboard cover and carpet are getting wet! What the heck could this be, and how would water be getting in there? Anyone have any ideas or experience with this?