Iowa Geographic Map Server

2008 Orthophotos - USDA (natural color)
2007 Orthophotos NW Iowa (natural color) Status Map
2007 Orthophotos NW Iowa (color-infrared) Status Map
2007 Orthophotos - USDA (natural color)
2006 Orthophotos - USDA (natural color)
2005 Orthophotos - USDA (natural color)
2004 Orthophotos - USDA (natural color)
2002 Orthophotos - IGIC (color-infrared)
2002 Orthophotos - IGIC (gray-scale)
1990s Orthophotos - USGS (gray-scale)
1980s Aerial Photos - USDA
1970s Aerial Photos - USDA
1960s Aerial Photos - USDA
1950s Aerial Photos - USDA
1930s Aerial Photos - USDA Status Map
24K Topographic Maps - USGS
100K Topographic Maps - USGS *
250K Topographic Maps - USGS
Hillshade from 1-meter LiDAR Status Map
Hillshade from 10-meter DEM - USGS
Hillshade from 30-meter DEM - USGS
General Land Office Survey 1836-1859
1800s Historic Vegetation - ISU Legend Info
2002 Landcover - IGSB Legend
1992 Landcover - Iowa Gap Legend Info
1992 Landcover - USGS NLCD Legend
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100K Topographic Maps - USGS

The viewport above measures width=11000 and height=11000 meters on the ground. Each pixel you see measures 20x20 meters. The viewport is centered on X=229803, Y=4680499 (UTM Zone 15, Meters, NAD83).