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This map was created by Glenn Grove, IDNR, Division of Water, Ground Water Section. The digital elevation grid of thebedrock surface was subtracted from the grid of the land surface and the resultant grid contoured in ArcInfo. The landsurface elevation grid is from 1:24,000 scale digital hypsography by the U.S. Geological Survey, Reston, Virginia, 1999and 2001. The bedrock surface elevation grid is from a digital map of the bedrock surface topography of HendricksCounty. The bedrock surface contouring was done by Marvin Thompson, IDNR, Division of Water, Ground Water Section,1997, at a scale of 1:24,000.
Contour interval = 25 feet.
Map generated by Glenn E. GroveIDNR, Division of Water, Ground Water SectionDecember 13, 2001
