See this link for some good water wheel Info.
http://www.backwoodshome.com/articles/behrens16.html
http://www.backwoodshome.com/articles/behrens17.html
My location is along the outside bend of a river where all the river's energy is concentrated, and the water is 3-4 feet deep right beside the bank . Stream velocity is 10 feet/second under normal conditions, double that in fall rain conditions
The poncelot wheel i will make will be made out of corten steel which is rust resistant, and will naturally camouflage it. I have detailed information on a curved blade design that will maximize efficiency.
I have a considerable mechanical background, and have access to a full machine/welding shop. Instead of relying on wooden bushings, and primitive lubrication like existed 100 or more years ago, modern materials/bearings/shafts/gearing will be used throughout.
Most wheel parts will be laser cut, except the buckets which will be rolled to match the optimum profile. They will then be either welded (buckets) or bolted into place (wheel quarters). I will probably build a few spare parts at the same time for the inevitible breakdowns/damage that will occur.
I would supply a drawing of my water wheel mount arrangement, but am considering patenting/manufacturing it if it works as well as I hope it does. I need to test it first.
The river height varies by approx 3-6 feet year throughout the year, so easily adjusting wheel height is important. In extreme flood conditions, being able to remove the wheel from the water and above bank height is important
Consideration for debris impact is important, as during high water conditions logs float down the river. The mount design I am contemplating will be counter-weighted, so any impact on the wheel will raise the wheel downstream in an arc., then lowering it when the debris is passed. This will also work well with unwary kayakers and river rafters