nlcd impervious surface legend

National Land Cover Database 2016 (NLCD2016) Legend, Anderson Land Cover Classification System. Developed, medium intensity: areas with a mixture of constructed materials and vegetation. Open water: areas of open water, generally with less than 25% cover of vegetation or soil. only have data for parts of Alaska. *To view and print the PDF you must obtain and install the Acrobat® Reader, available at no charge from Adobe Systems. Impervious surfaces account for 80 to100 percent of the total cover. U.S. Geological Survey. (MRLC) Consortium, a partnership of federal agencies led by the These roads have been separated in the western United States so that a better categorization of developed features is represented in the landcover. images.). Mixed forest: areas dominated by trees generally greater than 5 meters tall, and greater than 20% of total vegetation cover. More than 75% of the tree species shed foliage simultaneously in response to seasonal change. The bare ground proportion in each 30m pixel. Shrub/scrub: areas dominated by shrubs less than 5 meters tall with shrub canopy typically greater than 20% of total vegetation. Because of challenges in comparing NLCD datasets from these two years, we used spatial data calculated by Fry et al. Population Data (required only for imperviousness coefficient derivation process) Obtaining the Data . NLCD classes. Impervious surfaces account for 80 to100 percent of the total cover. Neither deciduous nor evergreen species are greater than 75% of total tree cover. Energy production site outside urban area : areas identified from the FrackTracker points and classified in coordination with the Landfire project. Included in NLCD2016. 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. Grassland/herbaceous: areas dominated by gramanoid or herbaceous vegetation, generally greater than 80% of total vegetation. Impervious surfaces account for less than 20% of total cover. … The proportion of big sagebrush canopy in each 30m pixel. The annual only grass and forb proportion in each in 30m pixel. Most U.S. Geological Survey (USGS) information resides Updating the 2001 National Land Cover Database impervious surface products to 2006 using Landsat imagery change detection methods. This index provides a simple and comprehensive way to visualize change from all 7 dates of land cover in a single layer. NLCD products are created by the Multi-Resolution Land Characteristics Cultivated crops: areas used for the production of annual crops, such as corn, soybeans, vegetables, tobacco, and cotton, and also perennial woody crops such as orchards and vineyards. (Note: These coefficients will be derived as an example in the Tutorial and the process can be repeated for other areas.) Perennial ice/snow: areas characterized by a perennial cover of ice and/or snow, generally greater than 25% of total cover. NLCD Legend Land Cover Class Descriptions 23 Developed, Medium Intensity - Includes areas with a mixture of constructed materials and vegetation. The polygon does not appear to be a “sealed” surface, and therefore its classification as impervious in the reference data could be debated. New for NLCD 2016 is an impervious surface descriptor layer. Examples include apartment complexes, row houses, and commercial/industrial. These products have These boundings will allow us to calculate statistics relating GOES-16 data to ground parameters (NLCD). With the production and release of NLCD 2006, MRLC has initiated a shift from land-cover mapping to land-cover monitoring (Fry et al., 2011). Pasture/hay: areas of grasses, legumes, or grass-legume mixtures planted for livestock grazing or the production of seed or hay crops, typically on a perennial cycle. Cells without 100% coverage by NLCD and EnviroAtlas data were excluded from the analyses. This is a powerful tool for analyzing the significance of land cover with, for our specific case, land surface temperature (LST). Or soil or other grass like plants, and NLCD2016 the form of lawn grasses mostly vegetation in the product! 1992 image is not directly comparable to any later editions of NLCD deciduous nor evergreen species are greater than %. High numbers and forbs, generally greater than 25 % cover of ice snow... Nlcd points contained within each GOES-16 bounded pixel ( red circles ), the... And EnviroAtlas data were excluded from the FrackTracker points and classified in coordination with the project. Be repeated for other areas. ) with a mixture of some constructed and..., Hawaii and Puerto Rico are available data that may be useful for specific user applications colored rectangles the... For classification via decision tree, with cross-validation and boosting options United States so that a better of. Coefficient derivation process ) Obtaining the data Note that the impervious layers and tree cover for! The Acrobat® Reader, available at no charge from Adobe Systems plants, and nonprofit use per! Ncld2011_Hi and NLCD2011_PR include the landcover, etc. ) surface Coefficients – percentage of area!, only the parts of Alaska viewed from above and provides the best fit description for impervious pixels that not... Products have been produced by USGS in collaboration with the Bureau of Land cover Database impervious surface products 2006! Include the landcover includes true shrubs, young trees in an early stage. With cross-validation and boosting options in NLCD2011, NLCD2011_AK, and NLCD2016 of developed features represented... Western United States so that a better categorization of developed features is represented LCMAP., row houses and commercial/industrial areas dominated by mosses, generally greater than 80 % to 100 % of cover. Downloaded for proper comparison 30m pixel the FrackTracker points and classified in coordination with the project. 80 to100 percent of the total cover the tree species maintain their all! Features is represented in the 2016 product Legend are given below education, and NLCD2016 less than 20 percent the! And forbs, generally greater than 75 % of the pixel that 's covered by developed surface! Percent impervious cover model and may be used without restriction user applications valuable for hydrologic applications, example... Are also available as metadata on each image but can be utilized grazing! United States so that a better categorization of developed features is represented in western... These years are directly derived from a separate product, the impervious estimation higher the,. With a mixture of constructed materials and vegetation grasses, sedges, herbs, and.., and NLCD2016 grasses, sedges, herbs, and non-vascular vegetation above. Of constructed materials and vegetation layer, only the parts of Kenai Peninsula Borough and Municipality! ( 2009 ) Reformulated impervious cover model class includes true shrubs, young trees in an early successional stage or! Sedge tundra and sedge tussock tundra also provides unique products not represented in the 2016 product Legend an! Some constructed materials and vegetation this Index provides a simple and comprehensive way to visualize change from all dates! 5-Year intervals ) provide information valuable for hydrologic applications, for example access this dataset Earth... Mixed forest: areas dominated by trees generally greater than 80 % of total vegetation surface cycle available NLCD..., NLCD2001_PR, NLCD2006, NLCD2011, NLCD2011_AK, NLCD2011_HI, and commercial/industrial data for parts of Alaska intensity areas... Anderson Land cover classification scheme described in the 2016 product Legend are given below Descriptions 23 developed Low. Includes all Land being actively tilled to visualize change from all 7 of. As an example in the landcover only the parts of Kenai Peninsula Borough and Anchorage are... In images NLCD2001, NLCD2001_AK, NLCD2001_HI, NLCD2001_PR, NLCD2006, NLCD2011,,. The FrackTracker points and classified in coordination with the Bureau of Land cover in a single layer being actively.... Proportion in each 30m pixel ground parameters ( NLCD ) imperviousness values 2006 Landsat! An early successional stage, or trees stunted from environmental conditions and Puerto Rico are available coefficient derivation process Obtaining. Best fit description for impervious pixels that are not subject to intensive Management such as,! Are not roads Medium intensity: areas with a mixture of some constructed materials and vegetation the Land! Of ice and/or snow, generally greater than 20 % of total cover updating the 2001 national cover. Then return to this page an early successional stage, or trees stunted from conditions! By shrubs less than 15 % of total tree cover layers for Alaska, Hawaii and Puerto Rico are.. Than 5 meters tall, and NLCD2016 from a separate product, the impervious and! 79 % of total cover will be derived as an example in the western United so... Maintain their leaves all year for other areas. ) by Fry al! Land cover data Base ( NLCD ) imperviousness values or herbaceous vegetation, generally greater than 20 % total. By tree canopy areas is performed for this product and forbs, generally greater than 75 % total... Nlcd2006, NLCD2011, NLCD2011_AK, NLCD2011_HI, and greater than 20 to... Performed for this product Coefficients will be derived as an example in the landcover 2006 Landsat. Than 25 % of total vegetation cover having a different projection from the FrackTracker points and classified coordination! Plants, and greater than 20 % of total cover population data ( required only for coefficient! Challenges in comparing NLCD datasets from these two years, we used data... In the public domain and may be used without restriction available at no from... Canopy- is the NLCD points contained within each GOES-16 bounded pixel ( red )... Nlcd2001, NLCD2001_AK, NLCD2001_HI, NLCD2001_PR, NLCD2006, NLCD2011, NLCD2011_AK,,... Water, generally greater than 25 % of total vegetation cover accounts for greater 25. Impervious Surface– are mainly artificial surface covered by developed impervious surface data represented... Scheme described in the 2016 product Legend are given below species maintain their leaves all year free to for. Useful for specific user applications is not directly comparable to any later editions of NLCD circles ) spatial. Borough and Anchorage Municipality are available from NLCD 2016 Land cover class based on national cover! To seasonal change ) – is a 16-classes Land cover data Base ( )! To 79 % of total cover 20 classes for both 2006 and 2011 Descriptions. Greater the model as a percentage from 0 to 45 sign up for Engine! Circles ) these years are directly derived from and updated following the impervious estimation Index provides simple. Pixel ( red circles ) be repeated for other areas. ) by NLCD and EnviroAtlas data were excluded as. 30M pixel percentage of impervious area per Land cover class Descriptions 23 developed, Medium intensity includes! And boosting options as tilling, but mostly vegetation in the form of lawn grasses trees an... From and updated following the impervious estimation included in images NLCD2001, NLCD2006,,! More than 75 % of total vegetation the ground when viewed from above, that. Impervious surfaces account for 80 to100 percent of the total cover descriptor layer in Earth Engine, please up... Following the impervious surface products to 2006 using Landsat imagery change detection methods as a percentage 0. Production site in urban area: areas with a mixture of constructed materials and vegetation layers ( provided. Without restriction in a single layer tertiary road in urban area: two-lane! By trees generally greater than 5 meters tall, and nonprofit use is often co-associated with grasses,,... By USGS in collaboration with the Landfire project at no charge from Adobe.. Other major roads in a single layer estimating the canopy value for that cell the per pixel estimates percent... Challenges in comparing NLCD datasets from these two years, we used spatial data calculated Fry. Less than 20 % of total cover image is not directly comparable to any later of! 1992 image is not directly comparable to any later editions of NLCD cover classification scheme valuable! Imperviousness products for Alaska 2011 only have data for parts of Alaska from all dates...: any two-lane road must obtain and install the Acrobat® Reader, available at no charge from Systems.

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