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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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News |
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April 2008
2007 high resolution orthophotos for northwest Iowa, natural color and color infrared online!
March 4, 2008
1800s General Land Office Survey Maps online!
November 24, 2007
New 2007 USDA National Agriculture Imagery Program orthophotos online!
March 31, 2007
New 2006 USDA National Agriculture Imagery Program orthophotos online!
July 28, 2006
1930s USDA Aerial Photos online!
November 16, 2005
New 2005 USDA National Agriculture Imagery Program (NAIP) natural-color
orthophotos online!
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New!
2008 Orthophotos. USDA National Agriculture Imagery Program (NAIP) natural color orthophoto mosaics from aerial photos taken in August-October 2008. The maximum resolution of this imagery is 1 meter. More>>.
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New!
Hillshade maps from 2007-2008 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 data collection that was begun in 2007. The maps are produced from 1-meter resolution digital elevation models (DEM) from the LiDAR bare-earth datasets. More>>.
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New!
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. More>>.
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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.
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1930s, 1950s, 1960s, 1970s, 1980s Historic 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 flown by the US Department of Agriculture beginning in 1936 for every county in Iowa. Currently there is state-wide coverage for the 1930s series on-line, with additional decade series photos being added.
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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>>.
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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>>.
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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>>.
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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>>.
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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
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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.
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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>>.
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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>>.
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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
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Iowa Historic
Vegetation map from General Land Office surveyor records of 1832-1859.
More >>.
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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>>.
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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>>.
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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>>.
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