Big Ten Academic Alliance Geospatial Discovery Portal

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141. Bedrock Topography 24K - Contours: Ohio

2016. Ohio Geographically Referenced Information Program. This data set contains surface and subsurface information used in the construction of the bedrock-topography maps for the state of Ohio. This data ...

142. Bedrock Topography 24K - Data Points: Ohio

2016. Ohio Geographically Referenced Information Program. This data set contains surface and subsurface information used in the construction of the bedrock-topography maps for the state of Ohio. This data ...

143. C-27 Geologic Atlas of Anoka County, Minnesota [Part A]

2011. Setterholm, Dale, R. Scale 1:100,000. Plates 2 and 3 were completed in 2011 as part of the USGS Statemap program. Additional plates, digital data and recomposed version...

144. C-38 Geologic Atlas of Kanabec County, Minnesota

2014. Boerboom, Terrence J. Surface and bedrock geology of Kanabec County, Mn., also includes data-base information, bedrock topography, depth to bedrock in GIS and image form...

145. Regions Prone to Surface Karst Feature Development: Minnesota

2016. Minnesota Department of Natural Resources (DNR). In Minnesota, surface karst features (including but not restricted to sinkholes, caves, stream sinks, and karst springs) are observed to primarily ...

146. Glacial Deposits of Northwestern Pennsylvania

2018. Allegheny College. Digitized regional surficial geology map for northwestern Pennsylvania. The complete citation for the paper map is: Map of the Glacial Deposits of ...

147. State Soil Geographic (STATSGO) Database for the Susquehanna River Basin: Pennsylvania

2006. SRBC. This dataset is a digital general soil association map for the Susquehanna River Basin (2006 boundary) developed by the National Cooperative Soil S...

148. Thickness of Glacial Deposits, Western Crawford County, Pennsylvania

2010. Allegheny College. Digitized sediment thickness map for western Crawford County, Pennsylvania. (The term western applies to all portions of the county west of 80 degr...

149. Physiographic Provinces 1:500,000: Pennsylvania

1995. Pennsylvania Bureau of Topographic and Geologic Survey, Dept. of Conservation and Natural Resources. Late in 1994, the Pennsylvania Bureau of Topographic and Geologic Survey was asked to develop a digital physiographic provinces map at 1:100,000 sc...

150. USDW - Boundaries: Ohio

2017. Ohio Geographically Referenced Information Program. The Ohio Department of Natural Resources, Division of Geological Survey, with partial funding from the USEPA through the Ohio EPA, has mapped the l...

151. Potential of Agricultural Chemical Contamination of Aquifers, 2004: Illinois

1995. Donald A. Keefer, Illinois State Geological Survey. This is a statewide SDE feature dataset for evaluating the potential for contamination of shallow aquifers by pesticides and nitrate. The sources o...