Iowa Geographic Map Server - Iowa State University Geographic Information Systems Support & Research Facility
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Iowa Geographic Map Server - Iowa State University Geographic Information Systems Support & Research Facility |
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This site provides free access to Iowa geographic map data through an on-line map viewer and through GIS web map server (WMS) connections. The site was developed by the Iowa State University Geographic Information Systems Support and Research Facility in cooperation with the USDA Natural Resources Conservation Service and the Massachusetts Institute of Technology. The site was first launched in March 1999. Available map layers are shown below. |
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New! 1800s General Land Office Survey Map of Iowa GLO 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. Status map>> | |||
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New! 1930s Historic Aerial Photos. USDA aerial photos from 1937-1939 flights are available for portions of Iowa - additional counties are being added. Metadata>> Status map>> | |||||
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2007 Orthophotos. USDA National Agriculture Imagery Program (NAIP) natural color orthophoto mosaics from aerial photos taken in June - October 2007. The maximum resolution of this imagery is 2 meters. More>>. Status map>> | |||||
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2006 Orthophotos. USDA National Agriculture Imagery Program (NAIP) natural color orthophoto mosaics from aerial photos taken in June - October 2006. The maximum resolution of this imagery is 1 meter. More>>. Status map>> | |||||
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2005 Orthophotos. USDA National Agriculture Imagery Program (NAIP) natural color orthophoto mosaics from aerial photos taken in June - September 2005. The maximum resolution of this imagery is 2 meters. More>>. Index map>> | |||||
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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. More>>. Index map>> | |||||
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Shaded relief map is derived from digital elevation model (DEM) data from the USGS National Elevation Dataset. The resolution of the source data is one arc-second (approximately 30 meters). The imagery is useful for displaying topographic relief in stream valleys and other landform features. Index map>> | |||||
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Color Infrared Digital Orthophotos Quads (DOQs) 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. Index map>> | |||||
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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 and can be used in numerous geographic information system (GIS) applications. The black & white DOQs on this site are from aerial photos taken from 1990-2000. More>>. Index map>> | |||||
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Digital raster graphic (1:24,000-scale DRG) is a scanned image of a U.S. 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. More>>. Index map>> | |||||
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2002 Landcover Map from the Iowa Geological Survey Bureau. This image service shows landcover and landuse information derived from 2002 satellite imagery. Metadata describing the imagery is available More >>. Index map>> | |||||
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Iowa Historic Vegetation map from General Land Office surveyor records of 1832-1859. More >>. Index map>> | |||||
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Digital raster graphic (1:100,000-scale DRG) is a scanned image of a U.S. 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. More>>. Index map>> | |||||
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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. More>>. Index map>> | |||||
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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. More>>. Index map>> |
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