U.S. flag

An official website of the United States government

icon-dot-gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

icon-https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Spatial Extent of Data

ISO 19115 Topic Category

Other Subject Keywords

Place Keywords

National Land Cover Database (NLCD) 2019 Land Cover Science Product (ver. 2.0, June 2021)

The U.S. Geological Survey (USGS), in partnership with several federal agencies, has developed and released five National Land Cover Database (NLCD) products over the past two decades: NLCD 1992, 2001, 2006, 2011, and 2016. The 2016 release saw landcover created for additional years of 2003, 2008, and 2013. These products provide spatially explicit and reliable information on the Nation’s land cover and land cover change. 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 2019. The NLCD 2019 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 2019 at 2–3-year intervals. Comprehensive research was conducted and resulted in developed strategies for NLCD 2019: continued integration between impervious surface and all landcover products with impervious surface being directly mapped as developed classes in the landcover, a streamlined compositing process for assembling and preprocessing based on 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 2019 production. The performance of the developed strategies and methods were tested in twenty composite referenced areas throughout the conterminous U.S. An overall accuracy assessment from the 2016 publication give a 91% overall landcover accuracy, with the developed classes also showing a 91% accuracy in overall developed. Results from this study confirm the robustness of this comprehensive and highly automated procedure for NLCD 2019 operational mapping. Questions about the NLCD 2019 land cover product can be directed to the NLCD 2019 land cover mapping team at USGS EROS, Sioux Falls, SD (605) 594-6151 or mrlc@usgs.gov. See included spatial metadata for more details.

Get Data and Metadata
Author(s) Jon Dewitz orcid
Publication Date 2021-07-08
Beginning Date of Data 2001
Ending Date of Data 2019
Data Contact
DOI https://doi.org/10.5066/P9KZCM54
Citation Dewitz, J., 2021, National Land Cover Database (NLCD) 2019 Land Cover Science Product (ver. 2.0, June 2021): U.S. Geological Survey data release, https://doi.org/10.5066/P9KZCM54.
Metadata Contact
Metadata Date 2024-11-25
Related Publication
Citations of these data

Loading https://doi.org/10.1016/J.AGRFORMET.2022.109175


Loading https://doi.org/10.3133/SIR20225084


Loading https://doi.org/10.3133/OFR20211104D


Loading https://doi.org/10.3133/FS20223053


Loading https://doi.org/10.1016/J.RSE.2022.113420


Loading https://doi.org/10.1016/J.JHYDROL.2023.129176


Loading https://doi.org/10.1016/J.JHYDROL.2022.128475


Loading https://doi.org/10.1016/j.isprsjprs.2018.09.006


Loading https://doi.org/10.1016/J.GEOMORPH.2023.108586


Loading https://doi.org/10.1016/J.ENVPOL.2022.120537


Loading https://doi.org/10.3133/sir20245079

Access public
License http://www.usa.gov/publicdomain/label/1.0/
Loading...
Harvest Source: ScienceBase
Harvest Date: 2024-11-26T04:54:25.012Z