Some of the below links may help you.

http://www.nooutage.com/hydroele.htm

Scroll to bottom of page and click on Alt-E University

http://shop.altenergystore.com/items.asp?CartId=7902875C-EVEREST-YXZS310&Cc=HYDROPOW&tpc=

http://www.electricitychoices.org/renewables.html#micro

http://www.utilityfree.com/hydro/

When I was young, my uncle had a hydraulic ram in a small stream going through a wooded area on their farm, several hundred feet from their home, that pushed water up to their house and barn. I don't know how the water was stored - possibly in a low pressure system, as I think that they had water on tap. About three hundred feet away, we used to hear every few minutes the sort of a thump sound when the ram cycled.

If you plan to use the water in the stream to generate power, I think that you'll need a dam to gain some height, so that the power in the falling water will force the vanes on the turbine to turn, for generators develop substantial resistance as they produce the power.

joyful guy

We have the Sequatchie River on one border of our property.
It is more like a big creek.
It has some places with fast current.
I was thinking of building a water wheel and floating it
on some pontoons made of 4inch PVC pipe.
It could power a pump to pump water up to my house
to use in a garden or to run a yard fountain.
I suppose this method could also be used with a small generator.
It is something to dream about doing.

Pooh Bear

Try Contacting your state department of energy. They can give you some directions to look. Be forewarned though, generating power from streams is probably not legal- it could harm the wildlife using the watershed.

If you are in Oregon, the Energy Trust of Oregon has great incentives for solar, and wind power instalations.