National Land Cover Database (NLCD) 2006 Accuracy Assessment Points Conterminous United States

Release of NLCD 2006 provides the first land-cover change database for the Conterminous United States (CONUS) from Landsat Thematic Mapper data. Accuracy assessment of NLCD 2006 focused on four primary products: 2001 land cover, 2006 land cover, land-cover change between 2001 and 2006, and impervious surface change between 2001 and 2006. The accuracy assessment was conducted by selecting a stratified random sample of pixels with the reference classification interpreted from multi-temporal high resolution digital imagery. The NLCD Level II (16 classes) overall accuracies for the 2001 and 2006 land cover were 79% and 78%, respectively, with Level II user's accuracies exceeding 80% for water, high density urban, all upland forest classes, [...]