resource center
resource center
resource center
Cartographic and Mapping Data Sets
ESRI Digital Chart of the World
ESRI Data and Maps
TIGER/Line Census Map Files for Iowa (1990)
Iowa 1:24,000-scale Digital Elevation Data
1:2,000,000-Scale Digital Line Graph (DLG) Data for the U.S.
Geology of the Conterminous U.S. (1:2,500,000-scale)
Miscellaneous Map Data Sets in Arc/Info Format
U.S. GeoData Sampler (Sample USGS Digital Data Products)
Global Relief (Topography and Bathymetry) CD-ROM
TerrainBase Worldwide Digital Terrain Data
USGS Geographic Names Information System (GNIS)
World Urban Centers Database
USGS Digital Orthophoto Quadrangle Data (DOQ) - Polk County, IA
USGS Digital Raster Graphic Data (DRG) - Sample Data
National Geodetic Survey Data Sheets (North Central USA)
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