Lower 48 possible fire data - NASA Server. Developed classes were modeled in 2001 using an imperviousness layer threshold. (2001 legend). Continue the three-page report for this lesson by responding to the following questions: The 2001 GAP class label was maintained if it matched the NLCD general land cover class. 2. Download Land Cover Data. Toggle Layer: Global Topographic Maps (Source USGS and ESRI). Nationwide coverage, including Alaska, Hawaii, and Puerto Rico. << Back to Land Cover Data Overview: Data and Tools. The primary source data were bands 3, 4, 5, and 7 (visible red, near-infrared, mid-infrared, and thermal infrared) of cloud-free Landsat TM scenes acquired during the spring and fall (when trees are mostly bare of leaves) of 1992. NLCD, clipped to show just the county, with the shapefile TIGER overlaid, for 1992, 2001, 2006, and 2011. NLCD 2011 is the most up-to-date iteration of the National Land Cover Database, the definitive Landsat-based, 30-meter resolution land cover database for the Nation. To continue the legacy of NLCD and further establish a long-term monitoring capability for the Nation’s land resources, the USGS has designed a new generation of NLCD products named NLCD 2016. NLCD 2001 Land Cover (CONUS) The U.S. Geological Survey (USGS), in partnership with several federal agencies, has developed and released four National Land Cover Database (NLCD) products over the past two decades: NLCD 1992, 2001, 2006, and 2011. National Land Cover Database 2001 (NLCD2001) Legend The classification system used by NLCD2001 is modified from the Anderson Land Cover Classification System *. NLCD 2016 now offers land cover for years 2001, 2003, 2006, 2008, 2011, 2013, 2016, and impervious surface for 2001, 2006, 2011, and 2016. The NLCD2006 land cover change product was generated by comparing spectral characteristics of Landsat imagery between 2001 and 2006, on an individual path/row basis, using protocols to identify and label change based on the trajectory from NLCD 2001 products." 4. NLCD data are public domain, and may be freely downloaded from the MRLC website. Original landcover data, including legends: NALCMS version 1.0 NLCD 2001 *To view and print the PDF you must obtain and install the Acrobat® Reader, available at no charge from Adobe Systems. Download the per pixel estimates of percent imperviousness legend. (2001 legend). NLCD 1992/2001 Retrofit Land Cover Change Product Developments in mapping methodology, new sources of input data, and changes in the mapping legend for the 2001 National Land Cover Database (NLCD2001) will confound any direct comparison between NLCD2001 and National Land Cover Dataset 1992 (NLCD1992). The 2001, 2006, and 2011 NLCD products on the MRLC website are the most recent version and replace all earlier editions of these data. As we might assume, in the years where LCMAP and NLCD overlap, LCMAP LCPRI has a high percentage match (on average of 89% calculated at an ARD tile basis) to NLCD, when NLCD classes are translated into the LCMAP LCPRI legend. Maps, each with a scale bar, legend, and graticule or labeled grid. Continue the three-page report for this lesson by responding to the following questions: These products provide spatially explicit and reliable information on the Nation’s land cover and land cover change. You can simply copy and paste your GEE JavaScripts into a code block wrapped with trip quotes and pass it to a variable. NLCD has also produced forest canopy density (1% increments) for 2001 and 2011. Display these so you can easily compare them. This image service contains the National Land Cover Database (NLCD) 2001 land cover classification rasters of the conterminous U.S.. NLCD 2001 Legend Land Cover Class Descriptions 1 No data value, Alaska zones only. 3DEP elevation, clipped to show just the county, with the TIGER file overlaid. Download the NLCD2001 land cover classification legend. The first version of NLCD--NLCD 92--was produced for subsets of ten federal regions that make up the conterminous United States. The NLCD 1992 values refer are: Zoom in to your study site to determine the mapped land cover/land use—be sure to use the appropriate color key (legend) to study your site. (2008) outlined the conceptual framework for the accuracy assessment of NLCD 2001. Substantial differences in imagery, legends, and methods between these two land cover products must be overcome in order to support direct comparison. Early testing suggested that NLCD for 2001 supported the best classification accuracy. NLCD 2016 offers 7 integrated epochs of land cover for years 2001, 2003, 2006, 2008, 2011, 2013, and 2016. (2016 legend). The NLCD 2001 metadata includes a table of value to RGB conversions. 1. The classes are described in the metadata documents. National Land Cover Data (NLCD) - 2001: Legend For NLCD 2001: Toggle Layer: Lower 48 possible fire data - Backup NASA Sever. The National Land Cover Database (NLCD): NLCD is a land cover monitoring database, providing generalized land cover (16 classes) and impervious cover (1% increments) for the U.S. for 2001, 2006, and 2011. For example, for pixels mapped as Atlantic Coastal Plain Dry and Dry-Mesic Oak Forest in the 2001 GAP map that were mapped as deciduous forest in the NLCD 2011 map, the original 2001 ecological system call … See Legend. Convert JavaScripts to Python¶. The classification system used by NLCD2001 is modified from the Anderson Land Cover Classification System*. A majority of NLCD 2001 updates occur in coastal mapping zones where NLCD 2001 was published prior to the National Oceanic and Atmospheric Administration (NOAA) Coastal Change Analysis Program (C-CAP) 2001 land cover products. NLCD 2016 represents the latest evolution of NLCD land cover products focused on providing innovative land cover and land cover change data for the Nation. NLCD 2016 offers 7 integrated epochs of land cover for years 2001, 2003, 2006, 2008, 2011, 2013, and 2016. (2016 legend). Comprehensive research was conducted and resulted in developed strategies for NLCD 2016: a streamlined process for assembling and preprocessing Landsat imagery and geospatial ancillary datasets; a multi-source integrated training data development and decision-tree based land cover classifications; a temporally, spectrally, and spatially integrated land cover change analysis strategy; a hierarchical theme-based post-classification and integration protocol for generating land cover and change products; a continuous fields biophysical parameters modeling method; and an automated scripted operational system for the NLCD 2016 production. Choose NLCD 2016, zoom into your study site, and compare to NLCD 2001. Download the per pixel estimates of percent tree canopy legend. 30 meter raster, with cells classified into one of 21 land cover classes. "Land cover layer containing only those pixels identified as changed between NLCD 2001 Land Cover 2011 Edition and NLCD 2011 Land Cover products across the conterminous United States. Use 7zip or another compression program to open these files. The performance of the developed strategies and methods were tested in twenty World Reference System-2 path/row throughout the conterminous U.S. An overall agreement ranging from 71% to 97% between land cover classification and reference data was achieved for all tested area and all years. The NLCD 2001 maps 16 land-cover classes across the conterminous United States at a nominal pixel scale of 30-m × 30-m with a minimum mapping unit of 5 pixels (see Homer et al., 2004, Homer et al., 2007 for full details of the classification procedures).Stehman et al. These products update all previously released versions of landcover and impervious products for CONUS (NLCD 2001, NLCD 2006, NLCD 2011) and are not directly comparable to previous products. Conterminous United States (based on 2011 imagery) Download Alaska Land Cover * Download Hawaii Land Cover * NLCD 2006 also quantifies land cover change between the years 2001 to 2006. Selected scenes were geometrically and radiometrically corrected, then combined into s… Users should note that the 2001, 2006, and 2011 NLCDs were recently updated and released with the 2016 NLCD. NLCD 2006 percent developed impervious pixels, identified as changed, were extracted to NLCD developed class codes using NLCD 2001 legend thresholds for developed classes and added to the change pixel map. Use of this dataset in studies needing generalized land cover information are advised to utilize newer versions of original input datasets (2005 NALCMS 2.0, NLCD), as methods of classification have improved, including the correction of NALCMS classification errors. NLCD 2001 has an improved Anderson Level I class accuracy of 85.3 percent and an Anderson Level II class accuracy of 78.7 percent (Wickham and others, 2010). 5. Zoom in to your study site to determine the mapped land cover/land use—be sure to use the appropriate color key (legend) to study your site. The 1992/2001 NLCD Land Cover Change Product was developed to offer a more accurate and useful guide to change analysis than can be provided by direct comparison of NLCD 1992 with NLCD 2001. NOAA C-CAP 2001 land cover has now been seamlessly integrated with NLCD 2001 land cover for all coastal zones. From NLCD: The National Land Cover Database 2001 was produced through a cooperative project conducted by the Multi-Resolution Land Characteristics (MRLC) Consortium. National Land Cover Database 2001 (NLCD2001) Legend, Anderson Land Cover Classification System. (Source MODIS) Toggle Layer: Lower 48 weather radar data (Source NOAA). With the 2016 release, the intended snapshot interval is 2-3 years, beginning with 2001. Choose NLCD 2016, zoom into your study site, and compare to NLCD 2001. NLCD 2016 represents the latest evolution of NLCD land cover products focused on providing innovative land cover and land cover change data for the Nation. The Multi-Resolution Land Characteristics Consortium has supported the development of two national digital land cover products: the National Land Cover Dataset (NLCD) 1992 and National Land Cover Database (NLCD) 2001. The data in NLCD 2011 are completely integrated with NLCD 2001 (2011 Edition) and NLCD 2006 (2011 Edition). The NLCD 2016 design aims to provide innovative, consistent, and robust methodologies for production of a multi-temporal land cover and land cover change database from 2001 to 2016 at 2–3-year intervals. The U.S. Geological Survey (USGS), in partnership with several federal agencies, has developed and released four National Land Cover Database (NLCD) products over the past two decades: NLCD 1992, 2001, 2006, and 2011. Download the per pixel estimates of percent imperviousness legend. Legend Differences Changes that were made in three NLCD 2001 legend definitions contributed to incompatibilities between the two land cover products for developed, agricultural, and barren classes. Landsat Thematic Mapper satellite data are used as the base imagery for the classification. However, the updates do not include all products that were included with earlier editions. Title: Vegetation Inventory for OMBIL Author: g5epxkgp Created Date: 5/14/2009 10:44:31 AM NLCD is generated in cooperation with the Multi-Resolution Land Characteristics Consortium a partnership of Federal agencies working together to produce current, nationally consistent, land cover products for all 50 states and Puerto Rico.NLCD is used for thousands of applications that require information on landcover location or where it is changing. Download the NLCD2001 land cover classification legend. (Note: Zooming Out Required) Toggle The Sun: NLCD 2006 percent developed impervious pixels, identified as changed, were extracted to NLCD developed class codes using NLCD 2001 legend thresholds for developed classes and added to the change pixel map. Results from this study confirm the robustness of this comprehensive and highly automated procedure for NLCD 2016 operational mapping. 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