To produce electricty? or for some kind of asthetic appeal? haha

I've looked into it quite a bit. You probably need a decent elevation change in addition to flow. Look up a pelton wheel turbine, theyre moved by 2 nozzles pointing in opposite directions. For microhydro I think the nozzles are pretty small maybe 1/4 inch.

The turbines are much more effecient than wheels. What you have would probably work IF you have the elevation change. I am tempted to try it if I can bolt a car alternator to one. Plus I think there is an issue of making it self exciting or it wont turn the alt at all.