Urban Imperviousness
NLCD imperviousness products represent urban impervious surfaces as a percentage of developed surface over every 30-meter pixel in the United States. NLCD 2019 updates all previously released versions of impervious products for CONUS and provides integrated analysis for all Land Cover dates. It also 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 from NLCD 2019. (Read More)
NLCD Imperviousness (CONUS) All Years
CONUS
| 2019, 2016, 2013, 2011, 2008, 2006, 2004, 2001
NLCD 2019 Percent Developed Imperviousness (CONUS)
CONUS
| 2019
NLCD 2019 Developed Imperviousness Descriptor (CONUS)
CONUS
| 2019
NLCD 2016 Percent Developed Imperviousness (CONUS)
CONUS
| 2016
NLCD 2016 Developed Imperviousness Descriptor (CONUS)
CONUS
| 2016
NLCD 2016 Percent Developed Imperviousness Zone 8 (ALASKA)
Alaska
| 2016
NLCD 2016 Developed Impervious Descriptor Zone 8 (ALASKA)
Alaska
| 2016
NLCD 2016 Developed Urban Descriptor (ALASKA)
Alaska
| 2016
NLCD 2013 Developed Imperviousness (CONUS)
CONUS
| 2013
NLCD 2013 Developed Imperviousness Descriptor (CONUS)
CONUS
| 2013
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 2011 to 2016 Developed Imperviousness Zone 8 Change (ALASKA)
Alaska
| 2011, 2016
NLCD 2011 Developed Impervious Descriptor Zone 8 (ALASKA)
Alaska
| 2011
NLCD 2011 Developed Urban Descriptor (ALASKA)
Alaska
| 2011
NLCD 2008 Percent Developed Imperviousness (CONUS)
CONUS
| 2008
NLCD 2008 Developed Imperviousness Descriptor (CONUS)
CONUS
| 2008
NLCD 2006 Percent Developed Imperviousness (CONUS)
CONUS
| 2006
NLCD 2006 Developed Imperviousness Descriptor (CONUS)
CONUS
| 2006
NLCD 2004 Percent Developed Imperviousness (CONUS)
CONUS
| 2004
NLCD 2004 Developed Imperviousness Descriptor (CONUS)
CONUS
| 2004
NLCD 2001 Percent Developed Imperviousness (CONUS)
CONUS
| 2001
NLCD 2001 Developed Imperviousness Descriptor (CONUS)
CONUS
| 2001
NLCD 2001 to 2011 Developed Imperviousness Zone 8 Change (ALASKA)
Alaska
| 2001, 2011
NLCD 2001 Percent Developed Imperviousness Zone 8 (ALASKA)
Alaska
| 2001
NLCD 2001 Percent Developed Impervious (HAWAII)
Islands & Territories
| 2001
NLCD 2001 Percent Developed Imperviousness (PUERTO RICO)
Islands & Territories
| 2001
NLCD 2001 to 2016 Developed Imperviousness Zone 8 Change (ALASKA)
Alaska
| 2001, 2016
NLCD 2001 Developed Impervious Descriptor Zone 8 (ALASKA)
Alaska
| 2001
NLCD 2001 Developed Urban Descriptor (ALASKA)
Alaska
| 2001
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, Bromus catharticus Vahl, Bromus commutatus, Bromus diandrus, Bromus hordeaceus L., Bromus hordeaceus spp. Hordeaceus, Bromus japonicus, Bromus madritensis L., Bromus madritensis L. ssp. rubens (L.) Duvin, Bromus racemosus, Bromus rubens L., Bromus secalinus L., Bromus texensis (Shear) Hitch, and medusahead (Taeniatherum caput-medusae). 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 Percent Cover - May 2021
Western U.S.
| 2021
Exotic Annual Grass Percent Cover - July 2021
Western U.S.
| 2021
Exotic Annual Grass Confidence Level - July 2021
Western U.S.
| 2021
Exotic Annual Grass Confidence Level - May 2021
Western U.S.
| 2021
Tree Canopy
NLCD tree canopy cover is a 30 m raster geospatial dataset that is available for the conterminous United States, coastal Alaska, Hawaii, and Puerto Rico. These data contain percent tree canopy estimates, as a continuous variable, for each pixel across all land covers and types and are generated by the United States Forest Service (USFS). The USFS derives tree canopy cover from multi-spectral Landsat imagery and other available ground and ancillary information. 2011 and 2016 Forest canopy products are available for the Continental United States, coastal Alaska, Hawaii, and Puerto Rico. (Read More)
NLCD 2016 USFS Tree Canopy Cover (CONUS)
CONUS
| 2016
NLCD 2016 USFS Tree Canopy Cover (ALASKA)
Alaska
| 2016
NLCD 2016 USFS Tree Canopy Cover (HAWAII)
Islands & Territories
| 2016
NLCD 2016 USFS Tree Canopy Cover (PUERTO RICO)
Islands & Territories
| 2016
NLCD USFS Tree Canopy Change (CONUS)
CONUS
| 2011, 2016
NLCD 2011 USFS Tree Canopy Cover (ALASKA)
Alaska
| 2011
NLCD 2011 USFS Tree Canopy Cover (CONUS)
CONUS
| 2011
NLCD 2011 USFS Tree Canopy Cover (HAWAII)
Islands & Territories
| 2011
NLCD 2011 USFS Tree Canopy Cover (PUERTO RICO)
Islands & Territories
| 2011
NLCD USFS Tree Canopy Change (ALASKA)
Alaska
| 2011, 2016
NLCD USFS Tree Canopy Change (HAWAII)
Islands & Territories
| 2011, 2016
NLCD USFS Tree Canopy Change (PUERTO RICO)
Islands & Territories
| 2011, 2016
RCMAP - Time-Series - Cover
The RCMAP product suite includes eight fractional components: annual herbaceous, bare ground, herbaceous, litter, non-sagebrush shrub, perennial herbaceous, sagebrush and shrub, rule-based error maps, and the temporal trends of each. Data characterize the percentage of each 30-meter pixel in the Western United States covered by each component for each year from 1985-2020 - providing change information for 35 years (imagery for 2012 was unavailable). Because of file size limitations, individual component products are packaged in three historic intervals including 1985-1995, 1996-2006, and 2007-2020. (Read More)
RCMAP Annual Herbaceous Cover
Western U.S.
| 2009-2020
RCMAP Shrub Cover
Western U.S.
| 2009-2020
RCMAP Sagebrush Cover
Western U.S.
| 2009-2020
RCMAP Litter Cover
Western U.S.
| 2009-2020
RCMAP Herbaceous Cover
Western U.S.
| 2009-2020
RCMAP Bare Ground Cover
Western U.S.
| 2009-2020
RCMAP Non-sagebrush Shrub Cover
Western U.S.
| 2009-2020
RCMAP Perennial Herbaceous Cover
Western U.S.
| 2009-2020
RCMAP Shrub Cover
Western U.S.
| 1997-2008
RCMAP Sagebrush Cover
Western U.S.
| 1997-2008
RCMAP Litter Cover
Western U.S.
| 1997-2008
RCMAP Herbaceous Cover
Western U.S.
| 1997-2008
RCMAP Bare Ground Cover
Western U.S.
| 1997-2008
RCMAP Annual Herbaceous Cover
Western U.S.
| 1997-2008
RCMAP Annual Herbaceous Cover Rule-Based Error
Western U.S.
| 1997-2008
RCMAP Non-sagebrush Shrub Cover
Western U.S.
| 1997-2008
RCMAP Perennial Herbaceous Cover
Western U.S.
| 1997-2008
RCMAP Shrub Cover
Western U.S.
| 1985-1996
RCMAP Sagebrush Cover
Western U.S.
| 1985-1996
RCMAP Litter Cover
Western U.S.
| 1985-1996
RCMAP Herbaceous Cover
Western U.S.
| 1985-1996
RCMAP Bare Ground Cover
Western U.S.
| 1985-1996
RCMAP Annual Herbaceous Cover
Western U.S.
| 1985-1996
RCMAP Non-sagebrush Shrub Cover
Western U.S.
| 1985-1996
RCMAP Perennial Herbaceous Cover
Western U.S.
| 1985-1996
