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National Land Cover Database (NLCD)

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National Land Cover Database 2011 (NLCD2011)

Product Data Downloads

NOTE: NLCD 2001 (2011 Edition) and NLCD 2006 (2011 Edition) products must be used in any comparison of NLCD 2001, NLCD 2006 and NLCD 2011 data products.


Conterminous United States

    NLCD 2011 NLCD 2011 Land Cover (1.1Gb)
    The 2011 land cover layer for the conterminous United States for all pixels.
    NLCD 2011 NLCD 2001 to 2011 Land Cover Change (169MB)
    Land cover layer containing only those pixels identified as changed between NLCD 2001 Land Cover 2011 Edition and NLCD2011 Land Cover products across the conterminous United States. This layer contains less overall change than the sum of 2001/2006 and 2006/2011 Land cover change pixels as some change transitioned through two classes from 2001 to 2006 to 2011 . In this case, the latest change class is given.
    NLCD 2011 NLCD 2006 to 2011 Land Cover Change (128MB)
    Land cover layer containing only those pixels identified as changed between NLCD 2006 Land Cover 2011 Edition and NLCD2011 Land Cover products across the conterminous United States.
    NLCD 2011 NLCD 2001 to 2011 Land Cover from to Change Index (1.4 GB)
    A raster layer of NLCD 2001 to 2011 (2011 Edition) change pixels identifying a from and to land cover class index value label for each pixel in the conterminous United States based on a matrix for all possible land cover class label change combinations. This is the combined product of both the NLCD 2001/2006 from-to and the NLCD 2006/2011 from-to. Overall combined change rate will be lower than the sum of the separate products because some change occurs twice in the same pixel. In this case, the most recent landcover class is the one represented.

    NLCD 2011 NLCD 2006 to 2011 Land Cover from to Change Index (1.4 GB)
    A raster layer of NLCD 2006 to 2011 (2011 Edition) change pixels identifying a from and to land cover class index value label for each pixel in the conterminous United States based on a matrix for all possible land cover class label change combinations.
    NLCD 2011 NLCD 2011 USFS Tree Canopy analytical (10.4 GB)
    The U.S. Forest Service analytical canopy product is designed for users that require more analytical vigor in their applications. This product has two layers: percent tree canopy cover (layer one) and standard error (layer two). For layer one, the percent tree canopy cover layer, the file pixel values range from 0 to 100 percent, with each individual value representing the area or proportion of that 30m cell covered by tree canopy. No masking of obvious non-tree areas is performed for this product. For layer two, the standard error layer, the file pixel values range from 0 to 45 percent, with each individual value representing the standard error for the model in that 30m cell. The higher the value, the greater the model uncertainty in estimating the canopy value for that cell. The percent tree canopy cover layer was produced using a Random Forests (trademarked by Leo Breiman and Adele Cutler) regression algorithm and the standard error layer was calculated from the variance of the canopy cover estimates from the random forest regression trees. This mapping methodology is different from the previous NLCD 2001 canopy product, which results in a current product that is not designed to be comparable to NLCD 2001 canopy for change detection.

    NLCD 2011 NLCD 2011 USFS Tree Canopy cartographic (3.2 GB)
    The U.S. Forest Service cartographic canopy product is designed for the standard user who requires the single best representation of tree canopy designed for most applications. This product consists of a single layer, percent tree canopy cover, with file pixel values ranging from 0 to 100 percent, with each individual value representing the area or proportion of that 30m cell covered by tree canopy. The product is then filtered and masked to eliminate obvious non-tree areas, and to create a more cartographically useful product. Although this approach more closely resembles the NLCD 2001 tree canopy protocol, the products still used different mapping methods and are not designed to be directly comparable for change analysis. The percent tree canopy cover layer was produced using a Random Forests (trademarked by Leo Breiman and Adele Cutler) regression algorithm.

    NLCD 2011 NLCD 2011 Percent Developed Imperviousness (741MB)
    The 2011 percent developed imperviousness layer for the conterminous United States for all pixels.
    NLCD 2011 NLCD 2006 to 2011 Percent Developed Imperviousness Change (66MB)
    Contains the difference in percent developed imperviousness pixels that changed between NLCD 2006 percent developed imperviousness (2011 Edition), and NLCD 2011 percent developed imperviousness.

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Page Last Modified: December 16, 2014