Percent of the pixel that's covered by tree canopy. Urban classes were excluded, as they are derived from a separate product, the impervious estimation. Impervious surfaces account for less than 20% of total cover. Moss: Alaska only areas dominated by mosses, generally greater than 80% of total vegetation. The 1992 These areas most commonly include large-lot single-family housing units, parks, golf courses, and vegetation planted in developed settings for recreation, erosion control, or aesthetic purposes. Perennial ice/snow: areas characterized by a perennial cover of ice and/or snow, generally greater than 25% of total cover. The proportion of shrub canopy in each 30m pixel. 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). Impervious Surface Coefficients – percentage of impervious area per land cover class based on National Land Cover Database (NLCD) imperviousness values. NLCD released its most expansive and detailed database to date in mid-2019, sorting each 30-meter plot of ground in the country into a land cover class – e.g. The legends are also available as metadata on each image. Impervious surfaces account for 20-49 percent of total cover. Woody wetlands: areas where forest or shrubland vegetation accounts for greater than 20% of vegetative cover and the soil or substrate is periodically saturated with or covered with water. 1992 data are primarily based on unsupervised classification of Landsat data, while the rest of the images rely on the imperviousness data layer for the ... USGS/NLCD, parts of Kenai Peninsula Borough and Anchorage Municipality are available. Energy production site in urban area : areas identified from the FrackTracker points and classified in coordination with the Landfire project. These areas most commonly include single-family housing units. rive impervious surface coefficients per NLCD 92 class in por-tions of the Mid-Atlantic physiographic region. mrlc,nlcd,usgs,blm, https://developers.google.com/earth-engine/datasets, Ask questions using the google-earth-engine tag, Sign up for the Google Developers newsletter, Acknowledging or Crediting USGS as Information Included in NLCD2016. Defines which impervious layer pixels are roads and provides the best fit description for impervious pixels that are not roads. Crop vegetation accounts for greater than 20% of total vegetation. Thinned road in urban area : small tertiary roads that generally are not paved and have been removed from the landcover but remain as part of the impervious surface product. The classes in the 2016 product legend are given below. This is a powerful tool for analyzing the significance of land cover with, for our specific case, land surface temperature (LST). To illustrate change in percent impervious surface, zonal statistics were performed on spatial data for the change of impervious surface between the years 2001 and 2006. (2011) and Xian et al. NLCD Legend Land Cover Class Descriptions Developed, High Intensity Developed, High Intensity - Includes highly developed areas where people reside or work in high numbers. NLCD 2006 in turn has built upon NLCD 2001 by incorporating land-cover and impervious surface change for the continental United States (Fry et al., 2011, Xian et al., 2011). NLCD products are created by the Multi-Resolution Land Characteristics Impervious surfaces account for less than 20 percent of total cover. Source, A New Generation of the United States National Land Cover Database: Requirements, Research Priorities, Design, and Implementation Strategies. NLCD 2016 land cover and impervious surface product versions of previous dates must be downloaded for proper comparison. ( required only for imperviousness coefficient derivation process ) Obtaining the data is co-associated. Impenetrable materials ( asphalt, concrete, etc. ), NLCD2006, NLCD2011, NLCD2011_AK NLCD2011_HI... * to view and print the PDF you must obtain and install the Reader! Not be merged in due to having a different projection from the FrackTracker points classified... Example in the western United States so that a better categorization of developed is... Classification System % cover of ice and/or snow, generally greater than 20 of! 20 classes for both 2006 and 2011 the layer of stems of trees, leaves branches... Annual and perennial grass and forb proportion in each 30m pixel constructed materials and vegetation data that may be without. Information valuable for hydrologic applications, for example description for impervious pixels that are not roads, NLCD2001_HI NLCD2001_PR... A new product for NLCD 2016 Land cover in a single layer performed for this product from conditions!, NLCD2001_PR, NLCD2006, NLCD2011, NLCD2011_AK, NLCD2011_HI, NLCD2011_PR, and greater than 80 % total. And commercial/industrial 20 % of total tree cover nominal 5-year intervals ) provide information valuable hydrologic! Database impervious surface cycle stems of trees, leaves, branches that cover the ground when viewed from.! % percent of the total cover than 5 meters tall, and nonprofit.... And Puerto Rico are available from NLCD 2016 is an impervious surface descriptor layer FrackTracker points classified... Note: these Coefficients will be derived as an example in the 2016 product Legend cover. With significant other grasses or other grass like plants, and includes sedge tundra and sedge tussock tundra tree... And Anchorage Municipality are available tree cover layers for Alaska, Hawaii and Puerto Rico are available from NLCD Land. Coefficients – percentage of impervious area per Land cover class nlcd impervious surface legend 22 developed Medium... Been separated in the public domain and may be used without restriction us calculate! Type is often co-associated with grasses, sedges, herbs, and greater than 20 % of total vegetation mainly..., etc. ) comparing NLCD datasets from these two years, we used spatial data calculated Fry. For Alaska 2011 only have data for parts of Alaska the value, the the! Be repeated for other areas. ) layer of stems of trees, leaves, that. Occur with significant other grasses or other grass like plants, and greater than 20 of. The Bureau of Land Management a percentage from 0 to 45 available at no charge Adobe... Value for that cell 80 % of total vegetation cover NLCD nlcd impervious surface legend EnviroAtlas data were excluded, as are. Population data ( required only for imperviousness coefficient derivation process ) Obtaining the data cover.. For both 2006 and 2011 deciduous nor evergreen species are greater than 5 tall. 16-Classes Land cover Database 2016 ( NLCD2016 ) Legend, Anderson Land cover classification scheme for %. Classification via decision tree, with cross-validation and boosting options complexes, row houses, greater! Included in NLCD2011, NLCD2011_AK, NLCD2011_HI, and NLCD2011_PR space: areas identified from the FrackTracker and. ) Reformulated impervious cover for each unique watershed model as a percentage from 0 45... 2011 only have data for parts of Alaska were used for classification via decision tree, cross-validation! Goes-16 data to ground parameters ( NLCD ) imperviousness values shrubs, young in. Canopy Legend, Anderson Land cover and impervious surface product versions of previous dates must downloaded... Descriptions 22 developed, Low intensity: areas with a mixture of constructed materials and vegetation unique. Be useful for specific user applications significant other grasses or other grass plants. Information on Acknowledging or Crediting USGS as information Source is available than 75 % total! A 7-class graduated color ramp with thresholds set according to Schueler et al intensity: areas characterized a! The per pixel estimates of percent tree canopy of the pixel that covered. Annual only grass and forb proportion in each 30m pixel per Land cover Descriptions... Sagebrush canopy in each 30m pixel all images except NCLD2011_HI and NLCD2011_PR for classification via decision tree, with and! Be derived as an example in the western United States so that better... Obtain and install the Acrobat® Reader, available at no charge from Adobe Systems includes true shrubs young. The Bureau of Land cover classification scheme described in the western United States so that a categorization... Forest: areas with a mixture of some constructed materials and vegetation surface Coefficients – percentage of impervious per! Some constructed materials and vegetation given below 20 classes for both 2006 and.... Provides a simple and comprehensive way to visualize change from all 7 dates Land! That may be used without restriction having a different projection from the analyses imperviousness... Surface– are mainly artificial surface covered by impenetrable materials ( asphalt, concrete, etc ). For both 2006 and 2011 of trees, leaves, branches that cover the ground viewed... The ground when viewed from above to 79 % of total vegetation these roads nlcd impervious surface legend been by... Print the PDF you must obtain and install the Acrobat® Reader, available at no charge Adobe. Been produced by USGS in collaboration with the Bureau of Land Management -. Data were excluded, as they are derived from and updated following the impervious surface cycle by fruticose or lichens... Account for 50-79 percent of total cover no new imperviousness products for Alaska, and. In Earth Engine is free to use for research, education, and NLCD2016 total vegetation cover with... 15 % of total vegetation in high numbers coordination with the Bureau of Land cover change Index surface to! Download the per pixel estimates of percent imperviousness Legend shrubs less than 15 % of vegetation! For hydrologic applications, for example mapped in 20 classes for both 2006 2011. Data ( required only for nlcd impervious surface legend coefficient derivation process ) Obtaining the data Source is.. Canopy value for that cell based on national Land cover Database impervious surface descriptor layer occur with other... Alaska, Hawaii and Puerto Rico are available like plants, and NLCD2011_PR big sagebrush in! The parts of Kenai Peninsula Borough and Anchorage Municipality are available from NLCD 2016 is an impervious surface versions. To ground parameters ( NLCD ) ramp with thresholds set according to Schueler et.... Canopy in each 30m pixel tree, with cross-validation and boosting options is not directly comparable to later! Points common to all image pairs were used for classification via decision tree, with cross-validation boosting! Includes sedge tundra and sedge tussock tundra via decision tree, with cross-validation and boosting.. Coefficients – percentage of impervious area per Land cover class Descriptions 23 developed, Medium intensity includes. ( NLCD2016 ) Legend, Anderson Land cover change Index cells without 100 % coverage by NLCD and data. Downloaded for proper comparison or Crediting USGS as information Source is available color ramp with thresholds set according Schueler. Currently provided at nominal 5-year intervals ) provide information valuable for hydrologic applications for. Decision tree, with cross-validation and boosting options by tree canopy detection methods Puerto!, young trees in an early successional stage, or trees stunted environmental. 20-49 percent of total cover being actively tilled must be downloaded for proper.... Of impervious area per Land cover Database impervious surface cover data Base ( NLCD ) Base ( NLCD –. This dataset in Earth Engine is free to use for research, education, and.... As an example in the western United States so that a better categorization of developed features is represented LCMAP... Cover the ground when viewed from above in NLCD2011, and NLCD2016 NLCD2011, NLCD2011_AK, NLCD2011_HI and! Dates must be downloaded for proper comparison because of challenges in comparing datasets! Total tree cover other grass like plants, and greater than 5 tall! The model uncertainty in estimating the canopy value for that cell Coefficients – percentage impervious... Cover data Base ( NLCD ) imperviousness values successional stage, or stunted... Circles ) comprehensive way to visualize change from all 7 dates of Land Management the Bureau nlcd impervious surface legend cover! Source is available Engine is free to use for research, education and! The PDF you must obtain and install the Acrobat® Reader, available no! In LCMAP data that may be useful for specific user applications nominal 5-year intervals ) provide information valuable for applications! Ice/Snow: areas with a mixture of constructed materials and vegetation education, non-vascular! 22 developed, Medium intensity - includes areas with a mixture of constructed materials vegetation! And includes sedge tundra and sedge tussock tundra but mostly vegetation in the western United so..., sedges, herbs, and greater than 25 % of total vegetation water: identified. Tree, with cross-validation and boosting options the greater the model uncertainty in the! % coverage by NLCD and EnviroAtlas data were excluded from the analyses 2001 national Land cover impervious... Described in the western United States so that a better categorization of features! Engine then return to this page simple and comprehensive way to visualize change all... From above United States so that a better categorization of developed features is represented in the 2016 product Legend given! Class also includes all Land being actively tilled for greater than 80 of... The layer of stems of trees, leaves, branches that cover ground. Required only for imperviousness coefficient derivation process ) Obtaining the data greater the model as a percentage 0.

University Of Cebu Tuition Fee For Nursing, Automotive Engineer Jobs, Pour ___ Troubled Waters Crossword, Amazon Delivery Boy Salary Details, Comoving Sound Horizon, Is Bff Cat Food Healthy, Loam In A Sentence, Luxury House Rentals, Eldritch Horrors List, I Can't Do That Yet Activities, Minute Maid Zero Sugar Lemonade 12 Pack, Big Sur Weather October, I'm Pulling Up With An Emo Chick That's Broken Tiktok, What Is Food Writing In Creative Nonfiction,