This will give you an idea of how much the water flow can change
I do not think a water wheel here would be practical, I do have a concern about debri in the water, sand gravel and limbs during any heavy rain and my concern would be a flooded turbine if it was mounted on the bottom, I guess as suggested that it would have to be mounted higher on the bank. I figure I could get pipe down to the creek level to build something but the banks to the creek are very steep and there is no access to the bottom of this area with any heavy machinery.
I do not know my power usage now, I currently using a wood fired boiler to heat my shop and house my main thoughts were any surplus could be sold to the power company and I would use electric heat in the shop. I run another business out of the shop painting motorcycles and my biggest cost is heat, I have to maintain a steady 70 degree temp for body work to dry. This may not be practical, the wood I have is pretty much free, Just my labor. I go through about 15 full cords of wood a year to heat the shop and house. I am not looking for any more than a help to what I have.
I thought I could manage 6 inch pipe and thought that with that volume at a 60 foot drop it would provide enough force to turn a decent sized turbine to make electricy. My concerns were would this ever pay, I figured if anyone had the perfect location I stood a pretty good shot of pulling it off. I will look at the links posted and do some more research, thanks for posting and sharing your information...Bob