micro hydro resources

Ignoring the oft-discussed legal/ethical concerns, micro hydro seems like the best off-grid power source... if you are next to a source of water of course. The environmental footprint seems negligible - a bit of pipe and a small generator.

I guess the basic idea is getting the water to spin a turbine shaft which is a part of a generator. An extremely basic setup would be some sort of waterwheel connected to an alternator.

But I'm guessing there's so much more in this space that I just haven't explored yet.

What are some good resources for someone who is interested in setting up a home-scale micro hydro system?

Why Shawn... its Permies of course!   Best resource out there !
I have had micro hydro for the last 20 years
Harris hydro for one, would have numbers for flow and fall.
Many different designs. Flumes , overshot wheels,  undershot wheels , pelton wheels.
Of course now , permanent magnet alternators are affordable and easily available.

Things to concider when thinking about a hydro.

Its harder to turn an alternator that is trying to make power than a person thinks.
Returning the water to the water course  Or disposing of that water elsewhere after use is a big concideration.
Hydro's (and windmills) require a constant diversion charge controler.
Distance from your hydro to your battery system.
And much more.

I suspect you were hoping for a book.  I am not aware of any.