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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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November 16, 2005
New 2005 USDA National Agriculture Imagery Program (NAIP) natural-color
orthophotos online!
January 3, 2005
New 2004 USDA National Agriculture Imagery Program (NAIP) natural-color
orthophotos online! New photo date link is also available.
November 17, 2004
GIS Day at Iowa State University! More
>>
November 15, 2004
New web pages are launched; designed to be compatibile with Mozilla
Firefox and other browsers.
August 15, 2004
Now on-line: Historic Vegetation maps from General Land Office
surveyor records of 1832-1859. More
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June 25, 2004
New transportation overlay maps based on 2002 US Department of
Census TIGER roads data. E-911 Road names are active when zoomed
to 1 to 20m resolution.
June 21, 2004
New 2002 Landcover Maps 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
>>
New legend links available for the three landcover image services.
Select the "legend" link next to the map layer name in
the map viewer.
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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
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New!
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
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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>> |
