National Land Cover Database 2001

Date(s): Coverage Availability/Geographic Extent: Footprint: Source(s):
2001 Statewide coverage State USGS (National Mapping, Biological Resources, and Water Resources Divisions), US EPA, the U.S. Forest Service, and the National Oceanic and Atmospheric Administration.

Data Access

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Data Details

Land Use - Land Cover
Available Formats: IMG
Derivative Data: None
Known Issues: None
Recommended Uses: Basemap, Research
Spatial Reference:

EPSG 2964


NLCD 2001 improves upon NLCD 1992 in three important ways. Whereas NLCD 1992 was simply a land-cover data set, NLCD 2001 is a land-cover database comprised of three elements: land cover, impervious surface and canopy density.

Second, NLCD 2001 used improved classification algorithms which have resulted in data with more precise rendering of spatial boundaries between the 16 classes (an additional nine classes are available in coastal areas and another four classes in Alaska only).

Third, NLCD 2001 also includes Alaska, Hawaii, and Puerto Rico. NLCD 1992 was restricted to the conterminous United States.