The Recurring State Judicial Task of Choosing Rules for Groundwater Law: How Occult Still?

I. Judicial Choices Relative to Knowledge Concerning Groundwater II. The Mid-Nineteenth Century Choices and the Knowledge Underlying Them III. Twentieth-Century Judicial Choices Modifying and Changing the Dominant Mid-Nineteenth Century Preferred Choice IV. Groundwater Problems in the Late Twentieth Century as Both a Free and a Scarce Good