Land Cover
The National Land Cover Database (NLCD) provides nationwide data on land cover and land cover change at a 30m resolution with a 16-class legend based on a modified Anderson Level II classification system. NLCD 2021 represents the latest evolution of NLCD land cover products focused on providing innovative land cover and land cover change data for the Nation. NLCD 2021 offers 9 integrated epochs of land cover for years 2001, 2004, 2006, 2008, 2011, 2013, 2016, 2019, and 2021. chs (2001 – 2021) and are directly comparable across the full time series and suitable for multi-temporal analysis. The NLCD 2021 release is update based, so the Land Cover and Impervious Surface products released in 2019 are unchanged and can be used directly with NLCD 2021. Science products and the change index will need to be reacquired to contain the additional 2021 change. Specific map products include:Developed classes in these years are directly derived from percent developed impervious surface and include a descriptor label that identifies the type of each impervious surface pixel. The NLCD Land Cover change index combines information from all years of land cover change and provides a simple and comprehensive way to visualize change from all 9 dates of land cover in a single layer. The change index was designed to assist NLCD users to understand complex land cover change with a single product. NLCD 2021 does not yet contain updated products for Alaska, Hawaii and Puerto Rico. (Read More)
NLCD Land Cover Change Index (CONUS)
CONUS
| 2021, 2019, 2016, 2013, 2011, 2008, 2006, 2004, 2001
NLCD Land Cover (CONUS) All Years
CONUS
| 2021, 2019, 2016, 2013, 2011, 2008, 2006, 2004, 2001
NOAA 2011 High Resolution Land Cover (HAWAII)
Islands & Territories
| 2011
NOAA 2005 to 2011 High Resolution Land Cover Change (HAWAII)
Islands & Territories
| 2005, 2011
NLCD 2011 from-to 2016 Land Cover Change Pixels (ALASKA)
Alaska
| 2011, 2016
NLCD 2011 to 2016 Land Cover Change (ALASKA)
Alaska
| 2011, 2016
NLCD 2011 Land Cover (ALASKA)
Alaska
| 2011
NLCD 2011 Land Cover (CONUS)
CONUS
| 2011
NLCD 2001 from-to 2011 Land Cover Change Pixels (ALASKA)
Alaska
| 2001, 2011
NLCD 2001 to 2011 Land Cover Change (ALASKA)
Alaska
| 2001, 2011
Urban Imperviousness
NLCD imperviousness products represent urban impervious surfaces as a percentage of developed surface over every 30-meter pixel in the United States. The NLCD 2021 release is update based, so the Impervious Surface products released in 2019 are unchanged and can be used directly with NLCD 2021.This update provides integrated analysis throughout all dates and includes a matching impervious surface descriptor layer. This descriptor layer identifies types of roads, wind tower sites, building locations, and energy production sites to allow a deeper analysis of developed features. No new imperviousness products for Alaska, Hawaii and Puerto Rico are available for NLCD 2021. (Read More)
NLCD Imperviousness (CONUS) All Years
CONUS
| 2021, 2019, 2016, 2013, 2011, 2008, 2006, 2004, 2001
NLCD 2011 Percent Developed Imperviousness (CONUS)
CONUS
| 2011
NLCD 2011 Percent Developed Imperviousness Zone 8 (ALASKA)
Alaska
| 2011
NLCD 2011 Developed Imperviousness Descriptor (CONUS)
CONUS
| 2011
NLCD 2001 to 2011 Developed Imperviousness Zone 8 Change (ALASKA)
Alaska
| 2001, 2011
NLCD 2011 Developed Urban Descriptor (ALASKA)
Alaska
| 2011
NLCD 2011 Developed Impervious Descriptor Zone 8 (ALASKA)
Alaska
| 2011
NLCD 2011 to 2016 Developed Imperviousness Zone 8 Change (ALASKA)
Alaska
| 2011, 2016
Exotic Annual Grass
The Exotic Annual Grass (EAG) abundance dataset provides early season percent cover estimate of the exotic grass species in 30m spatial resolution for a mapped year in rangeland ecosystems of western United States. We plan to release these EAG estimates multiple times each year in early growing season. EAG is a continuous field consisting of abundance of non-native grass species whose life history is complete in one growing season. Cheatgrass (Bromus tectorum) is a dominant species, but this dataset also includes Bromus arvensis L., Bromus briziformis Fisch. & C.A. Mey. Bromus catharticus Vahl, Bromus commutatus Schrad, Bromus diandrus Roth, Bromus hordeaceus L., Bromus hordeaceus spp. Hordeaceus, Bromus japonicus Thunb, Bromus madritensis L., Bromus madritensis L. ssp. rubens (L.) Duvin, Bromus racemosus L., Bromus rubens L., Bromus secalinus L., Bromus texensis (Shear) Hitchc, and medusahead (Taeniatherum caput-medusae (L.) Nevski). A main objective of releasing these maps is to provide a tool for better monitoring EAG dynamics and informing conservation and management efforts at local to regional scales. (Read More)
Exotic Annual Grass Confidence Level June 19th, 2023
Western U.S.
| 2023
Exotic Annual Grass Percent Cover June 19th, 2023
Western U.S.
| 2023
Exotic Annual Grass Confidence Level June 12th, 2023
Western U.S.
| 2023
Exotic Annual Grass Percent Cover June 12th, 2023
Western U.S.
| 2023
Exotic Annual Grass Confidence Level June 5th, 2023
Western U.S.
| 2023
Exotic Annual Grass Percent Cover June 5th, 2023
Western U.S.
| 2023
Exotic Annual Grass Confidence Level May 29th, 2023
Western U.S.
| 2023
Exotic Annual Grass Percent Cover May 29th, 2023
Western U.S.
| 2023
Exotic Annual Grass Confidence Level May 22nd, 2023
Western U.S.
| 2023
Exotic Annual Grass Percent Cover May 22nd, 2023
Western U.S.
| 2023
Exotic Annual Grass Confidence Level May 15th, 2023
Western U.S.
| 2023
Exotic Annual Grass Percent Cover May 15th, 2023
Western U.S.
| 2023
Exotic Annual Grass Confidence Level May 8th, 2023
Western U.S.
| 2023
Exotic Annual Grass Percent Cover May 8th, 2023
Western U.S.
| 2023
Exotic Annual Grass Confidence Level May 1st, 2023
Western U.S.
| 2023
Exotic Annual Grass Percent Cover May 1st, 2023
Western U.S.
| 2023
Tree Canopy
NLCD tree canopy cover geospatial datasets with spatial resolutions of 30 m are produced by the USDA Forest Service. Tree canopy cover is derived from multi-spectral satellite imagery and other available ground and ancillary information. Tree canopy products for the period 2011-2021 are available for the conterminous United States, and by summer 2023, they will also cover coastal south east Alaska, Hawaii, Puerto Rico, and U.S. Virgin Islands. (Read More)
NLCD 2011 USFS Tree Canopy Cover (PUERTO RICO & U.S. VIRGIN ISLANDS)
Islands & Territories
| 2011
NLCD 2011 USFS Tree Canopy Cover (ALASKA)
Alaska
| 2011
NLCD 2011 USFS Tree Canopy Cover (HAWAII)
Islands & Territories
| 2011
NLCD 2011 USFS Tree Canopy Cover (CONUS)
CONUS
| 2011
RCMAP - Time-Series - Trends
The RCMAP product suite includes 10 components: annual herbaceous, bare ground, herbaceous, litter, non-sagebrush shrub, perennial herbaceous, sagebrush, shrub, tree, and shrub height. Data characterize the percentage of each 30-meter pixel in the Western United States covered by each component for each year from 1985-2023 - providing change information for 39 years. (Read More)
Break Point Presence/Absence in Each Year Annual Herbaceous
Western U.S.
| Time Series Trends
Break Point Presence/Absence in Each Year Bare Ground
Western U.S.
| Time Series Trends
Break Point Presence/Absence in Each Year Herbaceous
Western U.S.
| Time Series Trends
Break Point Presence/Absence in Each Year Litter
Western U.S.
| Time Series Trends
Break Point Presence/Absence in Each Year Non Sagebrush Shrub
Western U.S.
| Time Series Trends
Break Point Presence/Absence in Each Year Perennial Herbaceous
Western U.S.
| Time Series Trends
Slope of Segment in Each Year Shrub
Western U.S.
| Time Series Trends
Break Point Presence/Absence in Each Year Sagebrush
Western U.S.
| Time Series Trends
Break Point Presence/Absence in Each Year Shrub
Western U.S.
| Time Series Trends
Break Point Presence/Absence in Each Year Tree
Western U.S.
| Time Series Trends
Break Point Count
Western U.S.
| Time Series Trends
P-Value of Segment in Each Year Annual Herbaceous
Western U.S.
| Time Series Trends
P-Value of Segment in Each Year Bare Ground
Western U.S.
| Time Series Trends
P-Value of Segment in Each Year Herbaceous
Western U.S.
| Time Series Trends
P-Value of Segment in Each Year Litter
Western U.S.
| Time Series Trends
P-Value of Segment in Each Year Non Sagebrush Shrub
Western U.S.
| Time Series Trends
P-Value of Segment in Each Year Perennial Herbaceous
Western U.S.
| Time Series Trends
P-Value of Segment in Each Year Sagebrush
Western U.S.
| Time Series Trends
P-Value of Segment in Each Year Shrub
Western U.S.
| Time Series Trends
P-Value of Segment in Each Year Tree
Western U.S.
| Time Series Trends
P-Value of Linear Model
Western U.S.
| Time Series Trends
Slope of Linear Model
Western U.S.
| Time Series Trends
Slope of Segment in Each Year Annual Herbaceous
Western U.S.
| Time Series Trends
Slope of Segment in Each Year Bare Ground
Western U.S.
| Time Series Trends
Slope of Segment in Each Year Herbaceous
Western U.S.
| Time Series Trends
Slope of Segment in Each Year Litter
Western U.S.
| Time Series Trends
Slope of Segment in Each Year Non Sagebrush Shrub
Western U.S.
| Time Series Trends
Slope of Segment in Each Year Perennial Herbaceous
Western U.S.
| Time Series Trends
Slope of Segment in Each Year Sagebrush
Western U.S.
| Time Series Trends
Slope of Segment in Each Year Tree
Western U.S.
| Time Series Trends
Year of Most Recent Break
Western U.S.
| Time Series Trends
P-Value of Segment in Each Year Shrub Height
Western U.S.
| Time Series Trends
Total Change Intensity Index
Western U.S.
| Time Series Trends
Slope of Segment in Each Year Shrub Height
Western U.S.
| Time Series Trends
Break Point Presence/Absence in Each Year Shrub Height
Western U.S.
| Time Series Trends