All data are in UTM Zone 13 North, units meters, horizontal datum NAD83, vertical datum
(NGVD29), with z units in feet. 


Folder		Description
---------------------------------------------------------------------------------
NPNRD		Folder contains ESRI Grids, grid export to ascii text files, 
		shapefiles, and METADATA subdirectory related to the AEM base
		of aquifer revision in the North Platte NRD area.

		METADATA - subdirectory of all metadata text files
		npnrd_aem_aqbase_contour.* - shapefile of AEM base of aquifer 
			with *.xml metadata
		npnrd_all_aqbase_control_points.* - shapefile of all control 
			points for base of aquifer contours with *.xml metadata
		np_cohyst90 - COHYST 90-meter base of aquifer grid
		np_cohyst90.asc - COHYST 90-meter base of aquifer grid - ascii 
			export text file
		npnrd_aqbase - AEM 90-meter base of aquifer grid
		npnrd_aqbase.asc - AEM 90-meter base of aquifer grid - ascii 
			export text file
		npnrddem90 - 90-meter DEM
		npnrddem90.asc - 90-meter DEM - ascii export text file
		npnrdthick - Estimated aquifer thickness in feet
			(NPNRDDEM90 - NPNRD_AQBASE)
		npnrdthick.asc - Estimated aquifer thickness in feet
			(NPNRDDEM90 - NPNRD_AQBASE) - ascii export text file 

SPNRD		Folder contains ESRI Grids, grid export to ascii text files, 
		shapefiles, and METADATA subdirectory related to the AEM base
		of aquifer revision in the South Platte NRD area.

		METADATA - subdirectory of all metadata text files
		spnrd_aem_aqbase_contour.* - shapefile of AEM base of aquifer 
			with *.xml metadata
		spnrd_all_aqbase_control_points.* - shapefile of all control 
			points for base of aquifer contours with *.xml metadata
		sp_cohyst90 - COHYST 90-meter base of aquifer grid
		sp_cohyst90.asc - COHYST 90-meter base of aquifer grid - ascii 
			export text file
		spnrd_aqbase - AEM 90-meter base of aquifer grid
		spnrd_aqbase.asc - AEM 90-meter base of aquifer grid - ascii 
			export text file
		spnrddem90 - 90-meter DEM
		spnrddem90.asc - 90-meter DEM - ascii export text file
		spnrdthick - Estimated aquifer thickness in feet
			(NPNRDDEM90 - NPNRD_AQBASE)
		spnrdthick.asc - Estimated aquifer thickness in feet
			(NPNRDDEM90 - NPNRD_AQBASE) - ascii export text file