2002. Boulder County Community Planning & Permitting Department. This polygon data layer represents geologic hazards for Boulder County, Colorado in 2002. The dataset was originally published by the Boulder Count...
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2004. United States Geological Survey. These line and polygon data layers represent geologic units for Michigan in 2004. They are feature classes within the geodatabase, Michigan_Geologi...
1991. Metro Data Resource Center. This polygon data layer represents hydric soils for Portland Metro, Oregon in 1991. The dataset was originally published by the Metro Data Resource...
4. Reconstruction of North American Drainage Basins and River Discharge Since the Last Glacial Maximum)
Wickert, Andrew D. Drainage basins and river discharges since the Last Glacial Maximum; released along with the article "Reconstruction of North American drainage bas...
1991. Metro Data Resource Center. This polygon data layer represents soils for Portland Metro, Oregon in 1991. The dataset was originally published by the Metro Data Resource Center...