Well after several weeks of back breaking labor with my homemade cable tool rig I am officially calling it quits on finding ground water. I have pounded out several holes with a four inch by 10 foot solid steel beem and my dynamite and have gone from 100 to 170 feet in some areas to find no water. The only water is at 5 to 7 feet and is just setting under the topsoil on top of the clay layer. This property is in the hills and I believe the water just runs down too quickly to permiate the clay. Anyway, I'm happy to be walking away from this project with all my fingers and without blowing myself up so.... I was wondering if anyone uses rainwater catchment as their only source of household water. Is this feasble in north eastern oklahoma? I will be using a 1500 sq foot metal roof. Could it be done with a huge storage tank? Any other options? By the way... no way am I paying those unreasonable prices for a proffessional well driller and I can't get a tap out here.