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/
Hydro-Electric For hundreds of years, moving water was used to turn wooden wheels that were attached to grinding wheels to grind (or mill) flour or corn. These were called grist mills or water mills. Old mills can re-invented to generate electric power.
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.