It works if you believe it works. Sometimes it's something other than water though. Most old time well drillers witch first unless you specify exactly where you want the well. It may just be for show but looks good.
We are in the "Big Injun Sands" at 475 feet and have standing water in the pipe up to 250'. The Injun is an underground river in these parts. A few feet more too far and you get salt water.
The important thing is not so much the GPM as the pumps and draw pipe don't do 40 gpm unless they are very big. The draw down is the important thing. That tells you how much water you have constantly without running out.
Ohio has all the legal well log records available on the net. Tennessee may have also. You can really see how deep and how good your neighbors wells are if you look at the logs and who drilled them. Some folks tend to stretch how good their well is but really don't know. A good or bad well can have a big effect on the value of your property as you and your wife know from being in the real estate business.
