OK, I'll bite and assume you're serious about building a residential waterpark. Maybe I'm missing something, but water flows downhill, which means there has to be a slope, which means there has to be a constant source of water at the top, which unless you've got a heck of a natural water source means there has to be a way to get water from the bottom back to the top, which means a whopperjaw holy-smokes pumping system. My waterfall has a 12,000 GPH pump on a 10' head and I don't think it would float a leaf down a 2' channel after being asked to pump water up a few feet and across a few hundred feet. Piping, maintenance, installation, electricity, etc.--Wow!! It'd be a lot easier and cheaper to just float in the pond and spin around so the scenery changes . . .
