When we were there at the chip show a few years back, it was explained to us that an artifical pond was dug, and is connected to the river by a pipe. Thus this connection ensures that the casino is legally a " barge " on the river.

The only reason I know this is I argued with Greg about Sam's Town being a land building, until the expansion joints at the entrance and the water were pointed out to me. I think that was the last time Greg was right about anyting