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Density (km / km^2) of all roads in the western United States. Dataset was developed to generalize the 2000 US Census TIGER/Line Roads layer to a density within 18km of each pixel. Obtained from 2000 US Census TIGER/Line Roads using LINEDENSITY with an 18km search radius.
Density of linear features, such as roads, power lines, telephone lines, and railroad tracks have been shown to influence synanthropic predator abundance patterns (Knight et al. 1995). Following Knight et al. (1995), we used linear features such as roads, railroads, and power line spatial data sets, but also included irrigation canals, to build a linear features spatial data set. However, we lacked spatial data on telephone and feeder-power lines and therefore our linear feature spatial data set vastly underestimates the number of linear features in some areas.
All secondary roads in the western United States from the 2000 US Census TIGER/line files. Secondary roads are defined as all roadways not classified as an interstate, state highway, or federal highway.
    map background search result map search result map All Roads in the Western United States All Interstates and State and Federal Highways in the Western United States All Secondary Roads in the Western United States Canals in the Western United States Distance (m) to an interstate highway within the Wyoming Basins Ecoregional Assessment area All Interstates in the Western United States Density of Line Features in the Western United States Distance (m) to railroads within the Wyoming Basins Ecoregional Assessment area Density of all roads (km/sq km) within a 1-km radius in the Wyoming Basins Ecoregional Assessment area Density of all roads (km/sq km) within a 3-km radius 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 Density of all roads (km/sq km) within a 18-km radius in the Wyoming Basins Ecoregional Assessment area Density of all roads (km/sq km) within a 270-m radius in the Wyoming Basins Ecoregional Assessment area Density of all roads (km/sq km) within a 540-m radius in the Wyoming Basins Ecoregional Assessment area All Road Density (18km) All Roads in the Western United States Distance (m) to railroads within the Wyoming Basins Ecoregional Assessment area Distance (m) to an interstate highway within the Wyoming Basins Ecoregional Assessment area Density of all roads (km/sq km) within a 1-km radius in the Wyoming Basins Ecoregional Assessment area Density of all roads (km/sq km) within a 3-km radius 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 Density of all roads (km/sq km) within a 18-km radius in the Wyoming Basins Ecoregional Assessment area Density of all roads (km/sq km) within a 270-m radius in the Wyoming Basins Ecoregional Assessment area Density of all roads (km/sq km) within a 540-m radius in the Wyoming Basins Ecoregional Assessment area Density of Line Features in the Western United States All Interstates in the Western United States Canals in the Western United States All Interstates and State and Federal Highways in the Western United States All Secondary Roads in the Western United States All Roads in the Western United States All Roads in the Western United States All Road Density (18km)