EPA Environmental Dataset Gateway


Open/Close section Identification Information
Title: EnviroAtlas -- Durham, NC -- Meter-Scale Urban Land Cover (MULC) Data (2010)
Abstract: The EnviroAtlas Durham, NC Meter-Scale Urban Land Cover (MULC) data was generated from USDA NAIP (National Agricultural Imagery Program) four band (red, green, blue and near infrared) aerial photography from July 2010 at 1 m spatial resolution. Five land cover classes were mapped: impervious surface, soil and barren, grass and herbaceous, trees and forest, and water. An accuracy assessment using a stratified random sampling of 500 samples yielded an overall accuracy of 83 percent using a minimum mapping unit of 9 pixels (3x3 pixel window). The area mapped is defined by the US Census Bureau's 2010 Urban Statistical Area for Durham, and includes the cities of Durham, Chapel Hill, Carrboro and Hillsborough, NC. This dataset was produced by the US EPA to support research and online mapping activities related to EnviroAtlas. EnviroAtlas (https://www.epa.gov/enviroatlas) allows the user to interact with a web-based, easy-to-use, mapping application to view and analyze multiple ecosystem services for the contiguous United States. The dataset is available as downloadable data (https://edg.epa.gov/data/Public/ORD/EnviroAtlas) or as an EnviroAtlas map service. Additional descriptive information about each attribute in this dataset can be found in its associated EnviroAtlas Fact Sheet (https://www.epa.gov/enviroatlas/enviroatlas-fact-sheets).
Purpose: The purpose of the Meter-Scale Urban Land Cover (MULC) is to provide a detailed snapshot of the urban environment and ecosystem for analysis of multiple human and ecosystem health metrics and services. This analysis is performed typically by U.S. Census block group. Greenspace and impervious surface land cover classes figure prominently. Land cover maps are integral to sound, scientific decision making and effective stewardship. A high-resolution urban land cover (LC) map quantitatively and qualitatively represents the physical environment and ecosystem matrix of a city. Land cover varies at a fine scale in urban environments, and the existing NLCD (National Land Cover Database, www.mrlc.gov) land cover maps at 30 m spatial resolution are too coarse to measure many urban phenomena. There are many possible applications, for example: - Knowing the exact location and size of green and gray spaces; - Identifying highly impervious areas that would most benefit from additional trees and other vegetation to mitigate surface runoff and urban heat island effects; - Measuring the width of urban riparian buffers; - Locating potential wildlife corridors, gaps and linkages; - Planning park development for maximum benefits. The overall goal of EnviroAtlas is to employ and develop the best available science to map indicators of ecosystem services production, demand, and drivers for the nation.
Open/Close section Distribution Information
Resource(Server) URL: https://enviroatlas.epa.gov/arcgis/rest/services/Supplemental/Landcover_AllCommunities/ImageServer
Download URL: https://edg.epa.gov/data/PUBLIC/ORD/ENVIROATLAS/Communities/DurhamNC
Reference URL: https://www.epa.gov/enviroatlas/enviroatlas-data
Website URL: https://www.epa.gov/enviroatlas
Open/Close section Time Period of Content
Publication Date: 20170905
Progress: Completed
Frequency: As needed
Open/Close section Single Date
Date: 201007
Currentness: Ground condition
Open/Close section Spatial Domain
West Bounding Longitude: -79.134618
East Bounding Longitude: -78.788325
North Bounding Latitude: 36.133857
South Bounding Latitude: 35.844552
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Open/Close section Constraints
License https://edg.epa.gov/EPA_Data_License.html
Access: None.
Use: None. Please check sources, scale, accuracy, currency and other available information. Please confirm that you are using the most recent copy of both data and metadata. Acknowledgement of the EPA would be appreciated.
Open/Close section Theme Keywords
Theme Topics: Environment and Conservation, Geological and Geophysical, Imagery and Base Maps
Open/Close section Contact Information
Originator: US Environmental Protection Agency (US EPA)
Email: EnviroAtlas@epa.gov
Address Type: mailing and physical address
City: Research Triangle Park
State: NC
Postal Code: 27709
Telephone: (919) 541-3832
Open/Close section Metadata Reference Information
File Identifier: {2FF66877-A037-4693-9718-D1870AA3F084}
Metadata Date Stamp: 2017-09-05
Metadata Standard Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata Standard Version: FGDC-STD-001-1998