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Map Layer Info

     
 
100-Meter Resolution Impervious Surface of the United States

What this map layer shows:

Impervious surface, such as pavement, as seen by satellite and expressed as a percentage of each 100-meter pixel. This map layer is comprised of four separate Impervious Surface files for the conterminous United States, Alaska, Hawaii, and Puerto Rico and the U.S. Virgin Islands.

The full Land Cover map layer used to generate Impervious Surface is also available.
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Background Information
Sample map Sample Map
Land cover data describe the nature of the land surface at a particular location. The staff at the U.S. Geological Survey (USGS), National Center for Earth Resources Observation and Science (EROS) compile land cover data as part of the USGS Land Cover Characterization Program (LCCP). The LCCP was started in 1995 to address National and International requirements for land cover data that were becoming increasingly sophisticated and diverse. The program develops multi-scale land cover characteristics databases; studies the patterns, characteristics, and dynamics of land cover across the Nation and the Earth; pursues research that improves the utility and efficiency of large-area land cover characterization and land cover characteristics databases; and serves as a central facility for access to, or information about, land cover data.

Land cover data are used for a wide variety of global, national, and regional applications, including global change research, environmental inventories, watershed management, and land use planning.

The USGS, in cooperation with the U.S. Environmental Protection Agency, National Oceanic and Atmospheric Administration, and the U.S. Forest Service, has produced a land cover data set for the conterminous United States, derived from 2001 Landsat thematic mapper imagery and supplemental data. This National Land Cover Database 2001 (NLCD) is a component of the LCCP. The seamless NLCD contains 21 categories of land cover information based on a modified Anderson land cover classification, and has been subjected to a rigorous accuracy assessment. Further information on collection and accuracy assessment procedures can be found on the National Land Cover Data: Mapping Procedures page.

This map layer is an image showing the Impervious Surface of the United States as a percentage of each 100-meter pixel.

The National Atlas also includes a 1 kilometer resolution image showing general North American Land Cover Characteristics, with classification based on the Anderson classification scheme.

The 100-Meter Resolution Impervious Surface of the United States map layer was prepared by the National Atlas of the United States and is delivered in the Albers Equal-Area Conic map projection. This map layer is part of our collection of fundamental digital cartographic data known as 1. This collection includes base map data in vector format at 1:1,000,000-scale and in image format at 100-meter ground resolution. Read more about the 1.

 

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