| 1930s_airphotos_64 | 1930's Digital Orthorectified Image of Marshall County, Iowa, in MrSid Format | |
| 1950s_airphotos_64 | 1950's Digital Orthorectified Image of Marshall County, Iowa, in MrSid Format | |
| 1960s_airphotos_64 | 1960's Digital Orthorectified Image of Marshall County, Iowa, in MrSid Format | |
| 1970s_airphotos_64 | 1970's Digital Orthorectified Image of Marshall County Iowa | |
| 1980s_CIR_airphotos_64 | 1980's Digital Orthorectified Image of Marshall County, Iowa, in MrSid Format | |
| 1990s_airphotos_64 | 1990's Airphoto Mosaic for Marshall County | |
| 2002_CIR_64 | 2002 Color-Infra-Red Airphoto Mosaic for Marshall County | |
Not Avail. |
2004_NAIP_airphotos_64 | 2004 National Agriculture Imagery Program (NAIP) Aerial Photography for Marshall County, Iowa |
| 2005_NAIP_airphotos_64 | 2005 National Agriculture Imagery Program (NAIP) Aerial Photography for Marshall County, Iowa | |
| 2006_NAIP_airphotos_64 | 2006 National Agriculture Imagery Program (NAIP) Aerial Photography of Marshall County, Iowa | |
| 2007_NAIP_airphotos_64 | 2007 National Agriculture Imagery Program (NAIP) Aerial Photography of Marshall County, Iowa | |
| 2008_NAIP_airphotos_64 | 2008 National Agriculture Imagery Program (NAIP) Aerial Photography Mosaic of Marshall County, Iowa | |
| 2009_CIR_airphotos_64 | 2009 Two Foot Pixel, Color Infrared Orthophotography Mosaic of Marshall County Iowa | |
| 2009_color_airphotos_64 | 2009 Two Foot Pixel, Color Orthophotography Mosaic of Marshall County Iowa | |
| 2009_NAIP_airphotos_64 | 2009 National Agriculture Imagery Program (NAIP) Aerial Photography Mosaic of Marshall County, Iowa | |
| 2010_NAIP_airphotos_64 | 2010 National Agriculture Imagery Program (NAIP) Aerial Photography Mosaic of Marshall County, Iowa | |
| 2011_NAIP_airphotos_64 | 2011 National Agriculture Imagery Program (NAIP) Four-Band Aerial Photography of Marshall County Iowa | |
| Address_64 | Address Points of Marshall County, Iowa | |
| andreas_atlas_64 | Georectified Image of Marshall County from the Illustrated Historical Atlas of the State of Iowa, 1875, by A.T. Andreas | |
| census_1990_64 | US Bureau of the Census, 1990 STF3a block level for Marshall County, Iowa | |
| census_2000_blocks_64 | Marshall County Census 2000 Blocks | |
| common_land_unit_64 | Common Land Unit for MarshallCounty, Iowa | |
| contours_2ft_64 | Generalized Two Foot Contours of Marshall County Iowa Derived from Lidar Data | |
| DEM_3M_I_64 | Three Meter Digital Elevation Model of Marshall County Iowa as an Imagine 16-bit Integer Raster | |
| DOT_roadmap_64 | Iowa DOT Marshall County Highway Transportation Map, 2005 | |
| drainage_district_tiles_64 | Drainage District Infrastructure of Marshall County, Iowa | |
| drainage_districts_64 | Drainage Districts of Marshall County, Iowa | |
| FEMA_DFIRM_64 | Digital Flood Insurance Rate Map, Flood Hazard Areas, of the Unincorporated Areas of Marshall County, Iowa | |
| GLO_maps_64 | General Land Office (GLO) Maps of the State of Iowa, as Surveyed from 1836-59, Marshall County | |
| GLO_vegetation_64 | Government Land Office Vegetation 1832-1859 for Marshall County, Iowa | |
| Hillshade_1M_64 | Hillshade of Marshall County Iowa Derived from the LiDAR One Meter Digital Elevation Model | |
| HRLC_2009_64 | High Resolution Landcover of Marshall County Iowa, 2009 | |
| NWI_64_line | National Wetlands Inventory data for Marshall County,Iowa | |
| NWI_64_poly | National Wetlands Inventory data for Marshall County,Iowa | |
| NWI_remap_line_64 | National Wetland Inventory Remap and Update, Line Features, of Marshall County, Iowa | |
| NWI_remap_poly_64 | National Wetland Inventory Remap and Update, Polygon Features, of Marshall County, Iowa | |
| PLSS_64 | Public Land Survey System for Marshall County, Iowa | |
| PLSS_QQQ_64 | Public Land Survey System, Quarter-Quarter-Quarter Sections, of Marshall County Iowa | |
| rivers_64 | Rivers of Marshall County | |
| roads_2006_64 | Road Centerlines of Marshall County, Iowa, 2006, from Iowa DOT GIMS files | |
| soils_64 | Iowa Cooperative Soil Survey (ICSS) Digital Soil Data for Marshall County | |
| spot_64 | Digital spot data for Marshall County, Iowa | |
| ssurgo_line_64 | Soil Survey Geographic (SSURGO) database for Marshall County, Iowa with attached ISPAID database | |
| ssurgo_soil_64 | Soil Survey Geographic (SSURGO) database for Marshall County, Iowa with attached ISPAID database | |
| ssurgo_spot_64 | Soil Survey Geographic (SSURGO) database for Marshall County, Iowa with attached ISPAID database | |
| Structures_64 | Structures of Marshall County, Iowa | |
| USGS_quads_64 | USGS 7.5' Quad Mosaic for Marshall County |