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United States Environmental Protection Agency
Future Road Density
Road density is generally highly correlated with amount of developed land cover. High road densities usually indicate high levels of ecological disturbance. More information about these resources, including the variables used in this study, may be found here:
The data can be used for analysis and general mapping. Information provided in these data tables is indexed to HUC Code, and can be joined to the HUC_CODE field of the HUC250K layer. It was developed for use in EPA's Regional Vulnerability Assessment (ReVA) program. The ReVA program is designed to produce the methods needed to understand a region's environmental quality and its spatial pattern. The objective is to assist decision makers in making more informed decisions and in estimating the large-scale changes that might result from their actions.
Time Period of Content
Projected future roads were obtained by state from Departments of Transportation (DOT). These data are available on the ReVA website.
West Bounding Longitude:
East Bounding Longitude:
North Bounding Latitude:
South Bounding Latitude:
None. Acknowledgement of the originating agencies would be appreciated in products derived from these data.
Transportation Networks, 018
USEPA Regional Vulnerability Assessment Program (ReVA)
mailing and physical
Metadata Reference Information
Metadata Date Stamp:
Metadata Standard Name:
Content Standard for Geospatial Metadata
Metadata Standard Version: