The pilot reported that the engine stopped producing power shortly after takeoff. He initially tried to land on a road, but the engine momentarily re-started before it stopped completely. The pilot then made a forced landing to a corn field, which resulted in substantial damage to the right wing and airframe. Examination of the engine found water in the carburetor. The pilot stated that when he placed auto gas in the airplane's fuel tanks earlier that day, he used gas cans from his shop, which most likely contained water. He also did not sump the wing tanks prior to the flight.