| 1930s_airphotos_28 | 1930's Digital Georectified Image of Delaware County, Iowa, in MrSid Format | |
| 1950s_airphotos_28 | 1950's Digital Orthorectified Image of Delaware County, Iowa, in MrSid Format | |
| 1960s_airphotos_28 | 1960's Digital Orthorectified Image of Delaware County, Iowa, in MrSid Format | |
| 1970s_airphotos_28 | 1970's Digital Orthorectified Image of Delaware County Iowa | |
| 1980s_CIR_airphotos_28 | 1980's Digital Orthorectified Image of Delaware County, Iowa, in MrSid Format | |
Not Avail. |
1990s_airphotos_28 | 1990's Airphoto Mosaic for Delaware County |
| 2002_CIR_28 | 2002 Color-Infra-Red Airphoto Mosaic for Delaware County | |
| 2004_NAIP_airphotos_28 | 2004 National Agriculture Imagery Program (NAIP) Aerial Photography for Delaware County, Iowa | |
| 2005_NAIP_airphotos_28 | 2005 National Agriculture Imagery Program (NAIP) Aerial Photography for Delaware County, Iowa | |
| 2006_NAIP_airphotos_28 | 2006 National Agriculture Imagery Program (NAIP) Aerial Photography of Delaware County, Iowa | |
| 2007_NAIP_airphotos_28 | 2007 National Agriculture Imagery Program (NAIP) Aerial Photography of Delaware County, Iowa | |
| 2008_NAIP_airphotos_28 | 2008 National Agriculture Imagery Program (NAIP) Aerial Photography Mosaic of Delaware County, Iowa | |
| 2009_NAIP_airphotos_28 | 2009 National Agriculture Imagery Program (NAIP) Aerial Photography Mosaic of Delaware County, Iowa | |
| 2010_CIR_airphotos_28 | 2010 Two Foot Pixel, Color Infrared Orthophotography Mosaic of Delaware County Iowa | |
| 2010_color_airphotos_28 | 2010 Two Foot Pixel, Color Orthophotography Mosaic of Delaware County Iowa | |
| 2010_NAIP_airphotos_28 | 2010 National Agriculture Imagery Program (NAIP) Aerial Photography Mosaic of Delaware County, Iowa | |
| 2011_NAIP_airphotos_28 | 2011 National Agriculture Imagery Program (NAIP) Four-Band Aerial Photography of Delaware County Iowa | |
| Address_28 | Address Points of Delaware County, Iowa | |
| andreas_atlas_28 | Georectified Image of Delaware County from the Illustrated Historical Atlas of the State of Iowa, 1875, by A.T. Andreas | |
| census_1990_28 | US Bureau of the Census, 1990 STF3a block level for Delaware County, Iowa | |
| census_2000_blocks_28 | Delaware County Census 2000 Blocks | |
| common_land_unit_28 | Common Land Unit for Delaware County, Iowa | |
| contours_2ft_28 | Generalized Two Foot Contours of Delaware County Iowa Derived from Lidar Data | |
| DEM_3M_I_28 | Three Meter Digital Elevation Model of Delaware County Iowa as an Imagine 16-bit Integer Raster | |
| DOT_roadmap_28 | Iowa DOT Delaware County Highway Transportation Map, 2005 | |
| FEMA_DFIRM_28 | Digital Flood Insurance Rate Map Database of Delaware County Iowa | |
| GLO_maps_28 | General Land Office (GLO) Maps of the State of Iowa, as Surveyed from 1836-59, Delaware County | |
| GLO_vegetation_28 | Government Land Office Vegetation 1832-1859 for Delaware County, Iowa | |
| Hillshade_1M_28 | Hillshade of Delaware County Iowa Derived from the LiDAR One Meter Digital Elevation Model | |
| NWI_28_line | National Wetlands Inventory data for Delaware County, Iowa | |
| NWI_28_poly | National Wetlands Inventory data for Delaware County, Iowa | |
| NWI_remap_line_28 | National Wetland Inventory Remap and Update, Line Features, of Delaware County, Iowa | |
| NWI_remap_poly_28 | National Wetland Inventory Remap and Update, Polygon Features, of Delaware County, Iowa | |
| PLSS_28 | Public Land Survey System for Delaware County, Iowa | |
| PLSS_QQQ_28 | Public Land Survey System, Quarter-Quarter-Quarter Sections, of Delaware County Iowa | |
| rivers_28 | Rivers of Delaware County | |
| roads_2006_28 | Road Centerlines of Delaware County, Iowa, 2006, from Iowa DOT GIMS files | |
| soils_28 | Iowa Cooperative Soil Survey (ICSS) Digital Soil Data for Delaware County | |
| spot_28 | Digital spot data for Delaware County, Iowa | |
| ssurgo_line_28 | Soil Survey Geographic (SSURGO) Database for Delaware County, Iowa | |
| ssurgo_soil_28 | Soil Survey Geographic (SSURGO) Database for Delaware County, Iowa | |
| ssurgo_spot_28 | Soil Survey Geographic (SSURGO) Database for Delaware County, Iowa | |
| Structures_28 | Structures of Delaware County, Iowa | |
| USGS_quads_28 | USGS 7.5' Quad Mosaic for Delaware County |