aggregate_source_beds	Active Aggregate Source Beds Specified by the Iowa Department of Transportation Office of Materials for use as Roadway Materials
	Alluvial	Alluvial Soils in Iowa, as a 30 Meter GRID format
	Alluvial_deposits	Alluvial Deposits of Iowa
	Bedrock_Faults	Iowa Bedrock Faults
	Bedrock_Geologic_Map	Bedrock Geologic Map of Iowa
	Bedrock_geology	Iowa Bedrock Geology
	bedrock_surface_elevation	Iowa Bedrock Surface Elevation
	bedrock_surface_hillshade	Iowa Bedrock Topography Hillshade
	Bedrock_topography	Iowa Bedrock Topography
	coalmine_entrances	Entrance Points to Coal Mines in Iowa
	coalmine_maps_georeferenced	Georeferenced Coalmine Maps of Iowa
	coalmine_maps_non-georeferenced	Iowa Coal Mine Maps, Non-georeferenced Individual Images
	coalmine_polys	Known and Approximate Areas of Coal Mines in Iowa
	coalmine_pts	Coal Mine point locations in Iowa
	Coalmines	Coal Mine Database of Iowa, Including Mine Maps, Outlines, and Entrances
	depth_to_bedrock	Estimated Depth to Bedrock of Iowa as a 110-meter pixel, 32-bit Imagine Format Raster Dataset
	depth_to_bedrock_contours	Depth to Bedrock: Isopach of Unconsolidated Materials
	Des_Moines_Lobe	Des Moines Lobe Glacial Boundaries
	geochemical_survey	National Geochemical Survey Locations and Results for Iowa
	geologic_bedrock_exposures	Bedrock Exposures of Iowa
	Geologic_sampling_points	Iowa Geologic sampling points
	geologic_stratigraphy_points	Iowa Stratigraphic Data Points
	karst	Potential Karst Geology of Iowa (GRID format)
	Landform_Regions	The Landform Regions of Iowa
	Landforms_old	Simplified Landform Regions of Iowa; 1:1,000,000 scale
	Lead_mine_map_1858	1858 Dubuque Area Lead Mine Map
	Lead_mine_map_1858_anno	1858 Dubuque Area Lead Mine Map Annotation
	Lineated_Inliers	Lineated Inliers Landform Features of Iowa
	Lineated_Ridges	Lineated Ridges Landform Features of Iowa
	major_land_resource_areas	Major Land Resource Area Geographic Database of Iowa
	Mines_1996	Registered noncoal mineral production sites within the State of Iowa
	Mines_1997	Registered noncoal mineral production sites within the State of Iowa
	Mines_2000	Registered noncoal mineral production sites within the State of Iowa for year 2000
	Paha_Ridges	Paha Ridges Landform Features of Iowa
	Parabolic_Dunes	Parabolic Dune Landform Features of Iowa
	RUSLE_I_10	Sheet and Rill Erosion Prediction for Iowa, as a 30 meter integer GRID format
	sinkhole_points	Current and Historic Sinkhole and Depression locations in Iowa
	sinkhole_polys	Current Sinkhole Boundaries in Iowa
	Soils	Soils of Iowa, as a 30 Meter GRID format
	soils_SSURGO_lines	Soil Survey (SSURGO) Geographic Database Line Features of Iowa
	soils_SSURGO_spots	Soil Survey (SSURGO) Geographic Database Spot Features of Iowa