I've got to agree with minimus... I think it's always been condemned. There was a slight loosening in '79, when an article in New Scientist suggested that there might be some scientfic basis for dowsing. But the article concluded:
g79 6/22 19
Even if it is proved that there are responses to changes in the electromagnetic field, which some attribute to the presence of water, it still does not explain the extreme reactions of some who claim that the stick or rod jerks about wildly and is sometimes broken by the violence of the reaction. Nor is there any explanation for the claim that some can pass the rod over a map of an area and locate water. In such cases demonic forces may still be at work. Wicked spirits sometimes seize upon normal reactions and distort them out of all proportions, or take a truth and push it to such an extreme that it becomes a gross deception.
The last mentions before that were in '62 and '63, and they were completely negative.