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Development of oil and gas wells leads to the destruction and fragmentation of natural habitat. Oil and gas wells also increase noise levels which has been shown to be detrimental to some wildlife species. Therefore, the density of oil and gas wells in the western United States was modeled based on data obtained from the National Oil and Gas Assessment.
This data set depicts soil characteristics in western North America. The data set was created from NRCS STATSGO soil data. Calculations were made to reduce one to many relationships to one to one relationships in order to summarize average water capacity, depth to rock, salinity, and pH for each map unit (MUID). ArcMap 8.3 was used to import .dbf files and merge newly created attribute fields to the GIS soil coverage.
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Field spikes were prepared at 207 stream and river sites as part of the U.S. Geological Survey (USGS) National Water Quality Assessment (NAWQA) project between December, 2012, and September, 2015. At the field site, a depth-and width-integrated environmental sample was collected, and one subsample of the environmental sample was spiked with a known amount of a spike mixture. Both the spiked subsample ("spike sample") and another subsample ("environmental sample") of the original water sample were analyzed for pesticides at the USGS National Water Quality Laboratory (NWQL) by direct injection liquid chromatography with tandem mass spectrometry (LC-MS/MS), and were used to calculate the spike recovery of each analyte....
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This map layer consists of federally owned or administered lands of the United States, Puerto Rico, and the U.S. Virgin Islands. For the most part, only areas of 320 acres or more are included; some smaller areas deemed to be important or significant are also included. There may be private inholdings within the boundaries of Federal lands in this map layer. Some established Federal lands which are larger than 320 acres are not included in this map layer, because their boundaries were not available from the owning or administering agency.
Tags: Air Force, Alabama, Alaska, Arizona, Arkansas, All tags...
Locations of railroad lines for 11 western states. The Bureau of Transportation Statistics 1:100k Railroads line network was clipped to the boundary of the 11 Western States.
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These plant and soil data were collected by Timothy M. Wertin and Sasha C. Reed in the spring, summer, and fall of 2011 at a climate manipulation experiment site near Moab, UT (38.521411, -109.470567). These data were collected to assess how warming affects leaf photosynthesis, soil CO 2 efflux, and soil chemistry in plots of ambient and warming treatments.
Map containing historical census data from 1900 - 2000 throughout the western United States at the county level. Data includes total population, population density, and percent population change by decade for each county. Population data was obtained from the US Census Bureau and joined to 1:2,000,000 scale National Atlas counties shapefile.
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Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features.


map background search result map search result map Proportion of All Sagebrush Species Land Cover (1-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Grassland Land Cover (5-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Juniper Land Cover (18-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Low and Black Sagebrush Land Cover (5-km scale) in the Wyoming Basins Ecoregional Assessment area Mixed Shrubland Land Cover in the Wyoming Basins Ecoregional Assessment area Railroads in the Western United States Oil and Gas Well Density in the Western United States Density of all roads (km/sq km) within a 5-km radius in the Wyoming Basins Ecoregional Assessment area Proportion of Salt Desert Shrub Land Cover (1-km scale) in the Wyoming Basins Ecoregional Assessment area Average STATSGO Soil Characteristics for the Western United States Human Population in the Western United States (1900 - 2000) All Roads in the Western United States Experimental Design Plant and Soil Measurement Data for Achnatherum hymenoides from a warming experiment, Colorado Plateau, 2011 - Data USGS Topo Map Vector Data (Vector) 34636 Pegram Creek, Idaho 20200715 for 7.5 x 7.5 minute Shapefile USGS 1:1,000,000-Scale Federal Lands of the United States 201412 FileGDB USGS US Topo 7.5-minute map for Golden Spike Monument, UT 2014 USGS US Topo 7.5-minute map for Golden Spike Monument, UT 2017 USGS US Topo 7.5-minute map for Government Point, UT 2014 USGS US Topo 7.5-minute map for Graham Peak, UT 2010 Experimental Design Plant and Soil Measurement Data for Achnatherum hymenoides from a warming experiment, Colorado Plateau, 2011 - Data USGS Topo Map Vector Data (Vector) 34636 Pegram Creek, Idaho 20200715 for 7.5 x 7.5 minute Shapefile USGS US Topo 7.5-minute map for Golden Spike Monument, UT 2014 USGS US Topo 7.5-minute map for Golden Spike Monument, UT 2017 USGS US Topo 7.5-minute map for Government Point, UT 2014 USGS US Topo 7.5-minute map for Graham Peak, UT 2010 Proportion of All Sagebrush Species Land Cover (1-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Grassland Land Cover (5-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Juniper Land Cover (18-km scale) in the Wyoming Basins Ecoregional Assessment area Proportion of Low and Black Sagebrush Land Cover (5-km scale) in the Wyoming Basins Ecoregional Assessment area Mixed Shrubland Land Cover in the Wyoming Basins Ecoregional Assessment area Density of all roads (km/sq km) within a 5-km radius in the Wyoming Basins Ecoregional Assessment area Proportion of Salt Desert Shrub Land Cover (1-km scale) in the Wyoming Basins Ecoregional Assessment area Average STATSGO Soil Characteristics for the Western United States Railroads in the Western United States All Roads in the Western United States Human Population in the Western United States (1900 - 2000) Oil and Gas Well Density in the Western United States USGS 1:1,000,000-Scale Federal Lands of the United States 201412 FileGDB