>>11152928Corrosion, you will need to make your turbines out of non-ferrous. It goes out of round, gets stuck and blows up.
Fires. Generators burn down places all the time. You'll need to run an alternator and that will fail all the time and burn up.
Whatever you hook it up to expects something study. Your fuse box will break all the time and you'll probably kill yourself working on it.
The waste water will need to go somewhere, and you'll be flooding someone.
Turbines can go too fast. You need to put something like an accumulator between it or that will blow up.
The total cost of this will be least expensive than excavating and laying a single copper wire. That's safe and there's proven procedures on how to do that while what you are doing will get you and many people murdered and if built the local fire department will shut it down before you start a forest fire that kills a dozen volunteers and causes millions in damage.