Iowa State University Geographic Information Systems Support & Research Facility

Iowa Geographic Map Server

This site provides free access to Iowa geographic map data through an on-line map viewer and through Web Map Service (WMS) connections for GIS. The site was developed by the Iowa State University Geographic Information Systems Support and Research Facility in cooperation with the Iowa Department of Natural Resources, the USDA Natural Resources Conservation Service, and the Massachusetts Institute of Technology. This site was first launched in March 1999.

To open a map layer, select from the menus or descriptions shown below, or try the NEW full-featured map viewer HERE

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Map Layer Descriptions

Historical Aerial Photos of Iowa 1930s - 1990s

1930s Aerial Photos

This imagery is provided through a project funded by the Iowa DNR in cooperation with the ISU GIS Facility, and USDA Natural Resources Conservation Service. These aerial photos were acquired by the US Department of Agriculture from 1936-1941.

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1950s Aerial Photos

This imagery is provided through a project funded by the Iowa DNR in cooperation with the ISU GIS Facility, and USDA Natural Resources Conservation Service. These aerial photos were acquired by the US Department of Agriculture in the 1950s.

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1960s Aerial Photos

This imagery is provided through a project funded by the Iowa DNR in cooperation with the ISU GIS Facility, and USDA Natural Resources Conservation Service. These aerial photos were acquired by the US Department of Agriculture in the 1960s.

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1970s Aerial Photos

This imagery is provided through a project funded by the Iowa DNR in cooperation with the Iowa USDA Natural Resources Conservation Service, and ISU GIS Facility. The source aerial photos for this map service were acquired by the US Department of Agriculture from May 1967 to October 1974.

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1980s Color Infrared Aerial Photos
This imagery is provided through a project funded by the Iowa DNR in cooperation with the ISU GIS Facility. The source aerial photos for this map service were acquired by the National High Altitude Program (NHAP) from May 1981 to August 1986.

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1990s Digital Orthophoto Quads

Digital Orthophoto Quads (DOQs) are aerial photos in which displacements caused by camera orientation and terrain have been removed. DOQs combine the image characteristics of a photograph with the geometric qualities of a map. The DOQs on this site are from aerial photos taken from 1990-2000 through the US Geological Survey.

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Summer Orthophotos of Iowa 2004 - 2014

2004 Orthophotos

The USDA National Agriculture Imagery Program (NAIP) acquires imagery during the agricultural growing seasons in the continental U.S. The NAIP imagery on this site are natural color orthophoto mosaics from aerial photos taken in June - September 2004. The maximum resolution of this imagery is 2 meters.

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2005 Orthophotos

The USDA National Agriculture Imagery Program (NAIP) acquires imagery during the agricultural growing seasons in the continental U.S. The NAIP imagery on this site are natural color orthophoto mosaics from aerial photos taken in June - September 2005. The maximum resolution of this imagery is 2 meters.

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2006 Orthophotos

The USDA National Agriculture Imagery Program (NAIP) acquires imagery during the agricultural growing seasons in the continental U.S. The NAIP imagery on this site are natural color orthophoto mosaics from aerial photos taken in June - September 2006. The maximum resolution of this imagery is 1 meter.

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2007 Orthophotos

The USDA National Agriculture Imagery Program (NAIP) acquires imagery during the agricultural growing seasons in the continental U.S. The NAIP imagery on this site are natural color orthophoto mosaics from aerial photos taken in June - September 2007. The maximum resolution of this imagery is 2 meters.

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2008 Orthophotos

The USDA National Agriculture Imagery Program (NAIP) acquires imagery during the agricultural growing seasons in the continental U.S. The NAIP imagery on this site are natural color orthophoto mosaics from aerial photos taken in June - September 2008. The maximum resolution of this imagery is 1 meter.

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2009 Orthophotos

The USDA National Agriculture Imagery Program (NAIP) acquires imagery during the agricultural growing seasons in the continental U.S. The NAIP imagery on this site are natural color orthophoto mosaics from aerial photos taken in June - September 2009. The maximum resolution of this imagery is 1 meter.

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2010 Natural Color and Color Infrared Orthophotos

USDA National Agriculture Imagery Program (NAIP) natural color and color infrared orthophoto mosaics from aerial photos taken in August-October 2010. The maximum resolution of this imagery is 1 meter.

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2011 Natural Color and Color Infrared Orthophotos

USDA National Agriculture Imagery Program (NAIP) natural color and color infrared orthophoto mosaics from aerial photos taken in July-September 2011. The maximum resolution of this imagery is 1 meter.

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2013 Natural Color and Color Infrared Orthophotos

USDA National Agriculture Imagery Program (NAIP) natural color orthophoto mosaics from aerial photos taken in July-September 2013. The maximum resolution of this imagery is 1 meter.

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2014 Natural Color Orthophotos

USDA National Agriculture Imagery Program (NAIP) natural color orthophoto mosaics from aerial photos taken in July-October 2014. The maximum resolution of this imagery is 1 meter.

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Spring Orthophotos of Iowa 2002-2010

Spring 2002 Color Infrared Orthophotos

Color Infrared Digital Orthophotos Quads are derived from aerial photos captured on color infrared film. The imagery is useful in detecting vegetation types and soil conditions. The color infrared DOQs on this site are from aerial photos taken in March-May 2002. The imagery is provided through a cooperative project with the Iowa Department of Natural Resources.

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Spring 2007 Natural Color and Color Infrared Orthophotos of northwest Iowa

2007 Northwest Iowa high resolution orthophotos. Iowa Geographic Information Council and the US Geological Survey natural color and color infrared orthophoto mosaics from aerial photos taken in April-May 2007. The project area covers a 17 county area of northwest Iowa. The maximum resolution of this imagery is 2ft.

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Spring 2009 Natural Color and Color Infrared Orthophotos of southwest Iowa

2009 Southwest Iowa high resolution orthophotos. Natural color and color infrared orthophoto mosaics from aerial photos taken in March-May 2009. The project area covers a 41 county area of southwest and central Iowa.

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Spring 2010 Natural Color and Color Infrared Orthophotos of eastern Iowa

2010 Eastern Iowa high resolution orthophotos. Natural color and color infrared orthophoto mosaics from aerial photos taken in March-May 2010. The project area covers a 41 county area of eastern Iowa.

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Elevation Maps of Iowa

1-meter LiDAR Hillshade

Hillshade maps from 2007-2010 high resolution LiDAR terrain mapping project. The Iowa DNR, USDA Natural Resources Conservation Service and other partners funded a multi-year project to collect high-resolution LiDAR terrain data for the State of Iowa. These hillshade maps are a derivative product from 1-meter resolution digital elevation models (DEM) from the LiDAR bare-earth datasets

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Hillshade from 10-meter DEM

Color Hillshade from 10-meter digital elevation model. Colors represent elevation values from state-wide DEM. A gray-scale hillshade model was merged with the colorized DEM.

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Hillshade from 30-meter DEM

Color Hillshade from 30-meter digital elevation model. Colors represent elevation values from state-wide DEM. A gray-scale hillshade model was merged with the colorized DEM.

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Hillshade from 30-meter DEM

Color Hillshade from 30-meter digital elevation model. Colors represent elevation values from state-wide DEM. A gray-scale hillshade model was merged with the colorized DEM.

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1:24K USGS Topographic Maps

Digital raster graphic (1:24,000-scale DRG) is a scanned image of a US Geological Survey (USGS) standard series topographic map. The image is georeferenced to the surface of the earth and fit to the Universal Transverse Mercator projection.

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1:100K USGS Topographic Maps

Digital raster graphic (1:100,000-scale DRG) is a scanned image of a US Geological Survey (USGS) standard series topographic map. The image is georeferenced to the surface of the earth and fit to the Universal Transverse Mercator projection.

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1:250K USGS Topographic Maps

Digital raster graphic (1:250,000-scale DRG) is a scanned image of a US Geological Survey (USGS) standard series topographic map. The image is georeferenced to the surface of the earth and fit to the Universal Transverse Mercator projection.

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Historical Maps of Iowa

General Land Office Survey 1836-1859

1800s General Land Office Survey Map of Iowa from survey conducted from 1836 through 1859. The source of the images is scanned microfilm of plats from the State Archives. These plats represent maps drawn from the original field notes by the Surveyor General's Dubuque office. This data is provide by the Iowa DNR Geological Survey Bureau.

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Andreas Atlas 1875

This image is a georectified image of the Illustrated Historical Atlas of the State of Iowa, 1875 by A.T. Andreas. The David Rumsey Map Collection digitized the image from an original copy, and the Iowa Department of Natural Resources georectified and clipped these images. Images exist for all counties in Iowa.

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Land Use Land Cover Maps of Iowa

Vegetation Map from 1836-1859 GLO Survey

Iowa Historic Vegetation map was derived from General Land Office surveyor records of 1832-1859.

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More Information

1992 National Land Cover Dataset

The 1992 Landcover map is derived from the US Geological Survey (USGS) National Landcover Dataset. The imagery is based on Landsat Thematic Mapper satellite data. The spatial resolution of the data is 30 meters.

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1992 Gap Landcover of Iowa

The Iowa Gap Landcover map was developed as a part of the Iowa Gap Analysis Program. The map is derived from 1992 satellite imagery and depicts existing natural vegetation to the level of dominant or co-dominant plant species The resolution of the source imagery is 30 meters.

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2002 Landcover of Iowa

The 2002 Landcover Map from the Iowa Geological Survey Bureau. This image service shows landcover and landuse information derived from 2002 satellite imagery.

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