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#  National Land Cover Dataset

### Fact Sheet 108-00 (July 2000)

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The U.S. Geological Survey (USGS), in cooperation with the U.S. EnvironmentalProtection Agency, has produced a land cover dataset for the conterminous UnitedStates on the basis of 1992 Landsat thematic mapper imagery and supplemental data.The National Land Cover Dataset (NLCD) is a component of the USGS Land CoverCharacterization Program.  The seamless NLCD contains 21 categories of land coverinformation suitable for a variety of State and regional applications, including landscapeanalysis, land management, and modeling nutrient and pesticide runoff.  The NLCD isdistributed by State as 30-meter resolution raster images in an Albers Equal-Area mapprojection.

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| Detailed example of National Land Cover Dataset, Washington, D.C., in color. |

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### Data Classification System Key

  11 Open Water  12 Perennial Ice/Snow  21 Low-Intensity Residential  22 High-Intensity Residential  23 Commercial/Industrial/Transportation  31 Bare Rock/Sand/Clay  32 Quarries/Strip Mines/Gravel Pits  33 Transitional  41 Deciduous Forest  42 Evergreen Forest  43 Mixed Forest  51 Shrubland  61 Orchards/Vineyards/Other  71 Grasslands/Herbaceous  81 Pasture/Hay  82 Row Crops  83 Small Grains  84 Fallow  85 Urban/Recreational Grasses  91 Woody Wetlands  92 Emergent Herbaceous Wetlands

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| Pennsylvania land cover data in color. |

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### Available Products

State data files are available on compact disc as Geo-TIFF.

### Information

An online description of the USGS Land Cover Characterization Program and theNLCD is available at landcover.usgs.gov/index.asp.

For more information, contact Customer Services:

Earth Science Information CenterEROS Data CenterSioux Falls, SD 57198Telephone: 605-594-6151Fax: 605-594-6589E-mail:[email protected]

For information on other USGS products and services, call 1-888-ASK-USGS, or visitthe general interest publications Web site on mapping, geography, and related topics aterg.usgs.gov/isb/pubs/pubslists/.

Please visit the USGS home page at www.usgs.gov/

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*This document has undergone official review and approval forpublications established by the National Mapping Division, U.S. GeologicalSurvey.  Some figures have been modified or added to improve thescientific visualization of information.*

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