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_71_ <br />• water table will develop and during dry years the perched water es- <br />sentially disappears. The soils in the area of the perched water <br />table are generally clayey and have a very low permeability. Ground <br />water movement in the area of the perched water table is primarily <br />percolation in the springtime and evaporation during the summer and <br />fall. The water movement in the zone of the perched water table <br />significantly weathers the formation from the surface to the lowest <br />level of the water table. <br />L J <br />• <br />