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Start Over Author Geological Survey (U.S.) Place Iowa Bounding Box -40.000931 39.999015 -39.999064 40.000987

1. 1:1,000,000-Scale County Boundaries of the United States, 2014

Datasets Stanford University Public content
2014. Geological Survey (U.S.). This polygon shapefile contains the county boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands, by showing the counties as ar... Geological Survey (U.S.).

4. County Boundaries of the United States, 1980

Datasets Stanford University Public content
1980. Geological Survey (U.S.). This polygon shapefile contains the 1980 state and county boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer ... Geological Survey (U.S.).

5. County Boundaries of the United States, 1990

Datasets Stanford University Public content
2005. Geological Survey (U.S.). This polygon shapefile portrays the 1990 state and county boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer ... Geological Survey (U.S.).

6. County Boundaries of the United States, 2000

Datasets Stanford University Public content
2000. Geological Survey (U.S.). This polygon shapefile portrays the 2000 state and county boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer ... Geological Survey (U.S.).

7. Forest Cover Types, United States, 2002

Datasets Stanford University Public content
2002. United States. Forest Service and Geological Survey (U.S.). This raster layer portrays general forest cover types for the United States in GeoTIFF format. Data were derived from Advanced Very High Resolution... National Atlas of the United States.

8. Illinois-Iowa, Edgington quadrangle : topography

Maps University Of Illinois Urbana Champaign Public content
1916. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1913.";"Surveyed in cooperation with the State of Illinois.";Relief shown by contours and spot heights.;1 ma... Geological Survey (U.S.) and State Geological Survey (Urbana, Ill.).

9. Illinois-Iowa Galena quadrangle : topography

Maps University Of Illinois Urbana Champaign Public content
1913. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed 1909 and 1911.";"Surveyed in cooperation with the State of Illinois.";Relief indicated by contours and spot hei... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

10. Illinois-Iowa, Lomax quadrangle

Maps University Of Illinois Urbana Champaign Public content
1937. Geological Survey (U.S.). Contour interval 10 feet;"Culture and drainage in part compiled from aerial photographs taken by Air Corps, U.S. Army";"Surveyed in 1931-1932";Reli... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).