According to "since the world began", there is a "bladder" under water (that extends about 6 inches above water) that keeps most of river country's treated water from the rest of the lake water. I'm sure some of each seeps both ways, but not enough to over work the purification system. I've never been to RC. When I go in December, the only water park open is Blizzard Beach. (does anybody elses butt hurt after going down summit plummit?)
