This homemade water turbine is beautiful, and functional and would be great for an off grid homestead. It shows what can be done with a little creative thinking. This video is very well done and is definitely worth your time. http://www.thegoodsurvivalist.com/beautiful-homemade-off-grid-water-turbine-made-from-a-bike-wheel-and-pvc-cups/
ES Pipe Waterwheel Generates Hydroelectricity Every Time You Turn on the Tap
RockyHydro's guide to measuring head and flow for micro-hydroelectric systems. A simple guide to learning more about micro hydro systems. RockyHydro has over 400 custom micro hydro systems available, including low and high head systems.