2019. U.S. Environmental Protection Agency (EPA) Great Lakes National Program Office. In an effort to clean up the most polluted areas in the Great Lakes, the United States and Canada committed to working with State and Provincial go...
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1940. University of Chicago Library. This map is part of a collection of 10 maps showing the location of Presbyterian Churches in relation to ethnic groups in the city of Chicago. The ...
2012. Geographic Information Systems, Sonoma County, California. The specific and area plan dataset represents local communities subject to the Sonoma County General Plan 2020 Land Use Element Policy LU-1a as ado...
1909. U.S.G.S. Geologic Atlas of the United States Folio 167 (Field Edition) United States. Geological Survey Companion text: Geologic atlas of the Unite... [Reston, Va.] : U.S. Geological Survey, 1909.
2005. King, Philip B., Arndt, Raymond E., Schruben, Paul G., Bawiec, Walter J., and Beikman, Helen M. This line shapefile shows the outlines of major calderas and impact structures in the United States. This layer is part of the Geologic Map of the ... Geological Survey (U.S.).
1990. Elder, John A. Conservation and Survey Division.
2014. University of Arizona. Cooperative Extension. The REOA model approach used to generate this dataset incorporates two main objectives (physical and economic) and a range of sub-objectives to det... University of Arizona. Cooperative Extension.
2014. University of Arizona. Cooperative Extension. The REOA model approach used to generate this dataset incorporates two main objectives (physical and economic) and a range of sub-objectives to det... University of Arizona. Cooperative Extension.
2014. Arizona. Department of Water Resources. The Arizona Department of Water Resources Geophysics/Surveying Unit has been collecting and processing Interferometric Synthetic Aperature Radar (I... Arizona Department of Water Resources.
2002. Powell, Richard L., cartographer. This map data was compiled in 1997 from information available at the time, but was unpublished until 2002; the map does not reflect any changes in ... Indiana Geological Survey.