1. Abstract. 2. 30 meter raster, with cells classified into one of 21 land cover classes. First, 2009 nighttime lights imagery from the NOAA Defense Meteorological Satellite Program (DMSP) was imposed on the NLCD 2006 impervious surface product to exclude low density imperviousness outside urban and suburban centers so that only imperviousness in urban core areas would be used in the training dataset. 1. NLCD supports a wide variety of Federal, State, local, and nongovernmental applications that seek to assess ecosystem status and health, understand the spatial patterns of … New for NLCD 2016 is an impervious surface descriptor layer. NLCD (the National Land Cover Database) is a 30-m Landsat-based land cover database spanning 8 epochs (1992, 2001, 2004, 2006, 2008, 2011, 2013 and 2016). With the 2016 release, the intended snapshot interval is 2-3 years, beginning with 2001. This descriptor layer identifies types of roads, core urban areas, and energy production sites for each impervious pixel to allow deeper analysis of developed features. 3. NLCD provides spatial reference and descriptive data for characteristics of the land surface such as thematic class (for example, urban, agriculture, and forest), percent impervious surface, and percent tree canopy cover. Landsat Thematic Mapper satellite data are used as the base imagery for the classification. The results are many, including an increased burden on stormwater infrastructure, erosion, reduced water quality, 'heat island effects', and both ground-level and water pollution. The USGS acknowledges the support of USGS NLCD 2006 Land Cover Mapping Teams in development of data for this map. 4. Impervious surfaces account for 20-49 percent of total cover. Impervious areas are predominantly flat paved or unpaved surfaces (e.g. The emergence of high-resolution land cover data has created the opportunity to assess the accuracy of impervious cover (IC) provided by the National Land Cover Database (NLCD). Like the other NLCD, these data sets are derived from Landsat satellite imagery using classification schemes. As the surface of the land becomes more impervious due to development, the ability of the groundwater to recharge diminishes. The USA NLCD Impervious Surface layer covers the entire continental United States, but your study area covers the extent of the Madison, Wisconsin, area. The 2017 per capita impervious surface area of Chinese people (151.7 m 2) was 35% more than that of Japanese people (112.7 m 2). airport terminal, commercial structures, residential) These coefficients were then applied to the area of the four developed classes to estimate the amount of impervious area associated with each. Also included in this release are thematic image layers of the percentage of tree cover within each 30 meter pixel, and the percentage of each pixel that is impervious surface. Because impervious surfaces are such a danger, many governments, like the City of Louisville, Kentucky, charge landowners with high amounts of impervious surfaces … 5. NLCD also provides unique products not represented in LCMAP data that may be useful for specific user applications. The images in the time series were produced by MRLC, the Multiresolution Land Characteristics Consortium, a 20 year partnership responsible for producing land cover updates of the United States.Direct project partners for this work include the United States Department of Interior, US … By 2017, the total impervious surface area in China has been 209,950 km 2 while in Japan this value was 14,290 km 2, 6.8% of China’s total. This product is used to assess urban growth, map and inventory wetlands, delineate wildlife habitat, determine changes in land cover over time, and more. The National Land Cover Dataset (NLCD) Impervious Surface 2001 is a raster impervious cover map developed by the U.S. Geological Survey (USGS) for the conterminous United States, southeast Alaska, Hawaii, and Puerto Rico at a spatial resolution of 30 meters. These values were then summed to produce a total impervious surface area for each watershed. The data set is the 2006 update of NLCD 2001 impervious surfaces for Zone 1, Washington state. These areas most commonly include single-family housing units. NLCD 2006 quantifies land cover change for the conterminous U.S. between the years 2001 to 2006. What geographic area does the data set cover? Remote Sensing of Environment, 114, 1676-1686. 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