Maybe this is a stupid idea but our family has talked a lot about using hydro-power at our cabin here in Utah, and what we have been thinking about is just a hose with a nozzle spraying at a fan (turbine) that is connected to a car alternator that charges some 12 volt batteries and then have a power inverter to get the 110. We already have outdoor plumbing and 3 hoses that we just let run all summer long. We haven't tried running them in the winter but have been thinking of trying it. It seems it would work just like in a car. Sorry to hijack a little but I think it is on topic.