Thanks for the link! Investing in a windmill right now is a bit too much for me so I guess I'll have to stick with the 350ft that I found.
However I am not grasping what you guys are saying about well depth. Am I thinking about this wrong or understanding you incorrectly? You dig a hole that is 300 feet deep. At that three hundred feet you hit the top of a reservoir of water. Since this is the top of the reservoir, wouldn't any water that is held within it be underneath this 300 foot entry into the reservoir and thus be deeper? Thus if someone says they have a 300 foot well do they mean they drilled 300 feet and then actually get water from deeper below that?