erosion

'For years,' wrote Bruce Zaretsky to open his On the Level column in the January 2011 edition, WaterShapes 'has celebrated the beauty, majesty and positive potential of water in the landscape.  We've seen it flowing down waterfalls, over vanishing edges, across slopes and through the air.  We've seen what happens to colors immersed in it, how it creates shimmering light patterns, how it works its way over stone and, perhaps most important, the