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LiDAR Hillshade Maps from high-resolution 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. The hillshade maps are useful for terrain analysis and as a backdrop map to drape orthophotos for a three-dimensional view of the landscape. Status map>>

1800s General Land Office Survey Map of Iowa. The U.S. Public Land Survey was conducted in Iowa from 1836 through 1859. The source of the images on the IGMS are 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 was provided by the Iowa DNR Geological Survey Bureau and Office of the State Archaeologist. Status map>>

2007 high-resolution orthophotos for northwest Iowa. The Iowa Geographic Information Council received a grant from the US Geological Survey that provided high-resolution orthophotos for a 16 county area of northwest Iowa. The aerial photos were collected in the spring of 2007. The 2-foot pixel orthophotos are 4-band which allows them to be viewed as natural color, or as color infrared. A portion of the imagery has been received and is available on the Iowa Geographic Map Server. Status map>>

Statewide 2007 Orthophotos.The USDA National Agriculture Imagery Program (NAIP) acquires imagery during the agricultural growing seasons in the continental U.S. The Iowa imagery is a natural color orthophoto mosaics from aerial photos taken in June - October 2007. The maximum resolution of this imagery is 2 meters. Status map>>