Search Data.gov
Found 660 dataset(s) matching "Transportation spatial data".
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This data set represents 1990 block group population density, in people per square kilometer, in the conterminous United States. The data set was used as an input data layer for a national model...
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This data set represents the presence or absence of Valley and Ridge carbonate rocks in the conterminous United States. The data set was used as an input data layer for a national model to predict...
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This data set represents the area of National Resources Inventory irrigation system, tailwater recovery conservation practice, in square kilometers, in the conterminous United States. The data set...
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This data set represents the average annual nitrogen input from confined animal manure, 1992 and 1997, in kilograms per hectare, in the conterminous United States. The data set was used as an...
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This data set represents the presence or absence of poorly sorted glacial till east of the Rocky Mountains in the conterminous United States. The data set was used as an input data layer for a...
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The CT Geodata Portal is an open data site for all geospatial data in Connecticut. Users can find spatial datasets directly administered by the GIS Office as well as those shared by the Department...
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This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. The digital segmented network based on watershed boundaries - ERF1-2 - includes enhancements to the...
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The U.S. Geological Survey (USGS), in cooperation with the National Park Service (NPS), has compiled Geographic Information Systems (GIS) datasets to assess the vulnerability of streams and stream...
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This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. Through a nationwide network of local coalitions - Clean Cities provides project assistance to help...
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This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. Through a nationwide network of local coalitions - Clean Cities provides project assistance to help...
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This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. Through a nationwide network of local coalitions - Clean Cities provides project assistance to help...
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This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. Through a nationwide network of local coalitions - Clean Cities provides project assistance to help...
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This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. Through a nationwide network of local coalitions - Clean Cities provides project assistance to help...
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This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. Through a nationwide network of local coalitions - Clean Cities provides project assistance to help...
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The U.S. Geological Survey (USGS) is developing SPARROW models (SPAtially Related Regressions On Watershed Attributes) to assess the transport of contaminants (e.g., nutrients) through the Pacific...
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Over the past 15 years Douglas County, NV has removed production wells in northern Carson Valley from use due to relatively high arsenic concentrations (Carl Ruschmeyer, January 2013, Douglas...
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The Daily and Annual PM2.5 Concentrations for the Contiguous United States, 1-km Grids, Version 1.10 (2000-2016) data set includes predictions of PM2.5 concentration in grid cells at a resolution...
