When I was a kid, we had an old guy who could find water for you. He used a long metal "crow-bar", balanced on his fingers, held horizontal to the ground. He would slowly walk over the ground until the end of the bar began to tip downward. He would count the number of times the tip touched the ground and that was how deep to dig. He could tell if the proposed well would be a seepage well or a strong producer. In the area we wanted a well he told my Dad that we would get water at fifteen feet but it would only be a seepage well and would not produce all year. He was right. He witched in another area and told Dad if he dug there he would get more water than he could use. At six and a half feet they had to pull the well digger out because the water came in so fast he could not stay ahead of the (hand operated) pump. The water rose to six inches below the top and it never dropped any lower. In later years they brought a pumper truck out from town and it could not lower the water level at all.