| Theme | Layers | Link | Extent |
|---|---|---|---|
| [Clearinghouse/Data links] | Natural Resource GIS library (NRGIS); Iowa DLNR | Link | statewide |
| [link list] | [link list] | Link | statewide |
| Boundaries | State, county, city, public land survey system (PLSS) boundaries, zip codes, voting precincts, school districts, congressional districts, census blocks | Link | statewide |
| Economy | Census economic profiles | Link | statewide |
| Elevation | Topography 1:100k by county | Link | statewide |
| Environment | Iowa cooperative Soil Survey | Link | statewide |
| Environment | National Wetlands Inventory, stewardship lands, ecoregions, soil surveys by county, historic vegetation by county | Link | statewide |
| Environment | NRCS soils data mart by state | Link | statewide |
| Geoscientific | USGS geologic database by state - midwestern region | Link | statewide |
| Imagery, Base Maps, and Scanned Maps | USGS quads, orthophoto mosaics by county | Link | statewide |
| Inland Waters | Rivers, Lakes, National Wetlands Inventory, flood hazard zones | Link | statewide |
| Planning and Cadastre | Public land survey system (PLSS) boundaries | Link | statewide |
| Transportation | Roads, Railroads | Link | statewide |
| Utilities and Communication | Powerlines, pipelines, dams | Link | statewide |
Data Websites: Iowa
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