Andrew LaMotte 2008 Version 1 raster digital data Data Series DS-383C Reston, VA U.S. Geological Survey References: Homer, C., Huang, C., Yang, L., Wylie, B., and Coan, M., 2004, Development of a 2001 national land cover database for the United States: Photogrammetric Engineering and Remote Sensing v. 70, no. 7, p. 829 - 840 or online at www.mrlc.gov/publications. http://water.usgs.gov/lookup/getspatial?nlcd01_3 U.S. Geological Survey 2003 1.0 Compressed folder containing image (.img file) and metadata in several formats (.faq, .htm, .txt, .xml, and .sgml). None None Sioux Falls, SD U.S. Geological Survey Each downloadable multi-zone image layer <browse graphic: nlcd01-multizones.jpg> is comprised of merged multiple-mapping zones <browse graphic: nlcd01-mappingzones>. Each mapping zone has its own metadata that can be found in the appropriate mapping-zone metadata directory that is created when the downloaded multizone file is decompressed. The metadata for mapping zone 01 would be located under the directory area1_landcover_metatdata\zone1_landcov_meta_web_final (area1 is the same as Multi zone 1 and zone1 is mapping zone 01). The organization of multi zones and mapping zones for TILE 3 is as follows: Multi zone 2 contains mapping zones 04, 05, 06, 12, 13; Multi zone 4 contains mapping zones 16, 17, 23, 28; Multi zone 5 contains mapping zones 14, 15, 24, 25; Multi zone 7 contains mapping zones 26, 27, 33, 34; Multi zone 9 contains mapping zone 38; Multi zone 10 contains mapping zones 32, 35, 36. http://www.mrlc.gov/nlcd_multizone_map.php This 30-meter data set represents land use and land cover for the conterminous United States for the 2001 time period. The data have been arranged into four tiles to facilitate timely display and manipulation within a Geographic Information System (see http://water.usgs.gov/GIS/browse/nlcd01-partition.jpg). The National Land Cover Data Set for 2001 was produced through a cooperative project conducted by the Multi-Resolution Land Characteristics (MRLC) Consortium. The MRLC Consortium is a partnership of Federal agencies (http://www.mrlc.gov), consisting of the U.S. Geological Survey (USGS), the National Oceanic and Atmospheric Administration (NOAA), the U.S. Environmental Protection Agency (USEPA), the U.S. Department of Agriculture (USDA), the U.S. Forest Service (USFS), the National Park Service (NPS), the U.S. Fish and Wildlife Service (USFWS), the Bureau of Land Management (BLM), and the USDA Natural Resources Conservation Service (NRCS). One of the primary goals of the project is to generate a current, consistent, seamless, and accurate National Land Cover Database (NLCD) circa 2001 for the United States at medium spatial resolution. For a detailed definition and discussion on MRLC and the NLCD 2001 products, refer to Homer and others (2004), (see: http://www.mrlc.gov/mrlc2k.asp). The NLCD 2001 was created by partitioning the United States into mapping zones. A total of 68 mapping zones (see http://water.usgs.gov/GIS/browse/nlcd01-mappingzones.jpg), were delineated within the conterminous United States based on ecoregion and geographical characteristics, edge-matching features, and the size requirement of Landsat mosaics. Mapping zones encompass the whole or parts of several states. Questions about the NLCD mapping zones can be directed to the NLCD 2001 Land Cover Mapping Team at the USGS/EROS, Sioux Falls, SD (605) 594-6151 or mrlc@usgs.gov. To provide complete, current, and consistent public domain information of national land use and land cover. This national (conterminous United States) data set was developed for use by the NAWQA (National Water-Quality Assessment) Program. NAWQA uses land-use data to assess land-use change, such as urban development and loss of agricultural lands as well as to allocate nutrient and pesticide loads to particular land-use categories. The data is stored in four tiles (NLCD01_1, NLCD01_2, NLCD01_3, NLCD01_4) (see http://water.usgs.gov/GIS/browse/nlcd01-partitions.jpg), to allow for storage using the ArcInfo Workstation GRID data model, which cannot support files larger than 2.1 gigabytes. Each tile has been stored as a gzipped ARCTAR file. To extract the ArcInfo Workstation GRID from the .tgz archive file use WINZIP, TARARC, or the following commands: gunzip <tilename>.tgz then tar xvof <tilename>.tar Questions about the NLCD mapping of any zone can be directed to the NLCD 2001 Land Cover Mapping Team at the USGS/EROS, Sioux Falls, SD (605) 594-6151 or mrlc@usgs.gov. 2001 publication date Complete As needed -123.305923 -97.818040 39.874012 22.736542 None National Water-Quality Assessment NAWQA land cover land use National Land Cover Data Set NLCD inland waters None Conterminous United States None From the USGS Land Cover Institute (LCI) site <http://landcover.usgs.gov/faq.php>: Direct comparison with NLCD 1992 is not recommended. Each data set was mapped with different methods and slightly different classes. While the two NLCD products are designed to be similar, the slight differences in classification, combined with the final accuracy of the mapping (from 70-80%), result in two distinct products. The typical result of direct comparison will result in a change map showing differences between mapping methods rather than real change on the ground. The NLCD mapping team is completing a product that highlights areas of potential change between the two eras of land cover using the original Landsat Thematic Mapper (TM) imagery. This product will soon be available on the web site for areas of completed land cover. Users should refer to the metadata for each mapping zone for use constraints that may be unique to each zone. Andrew LaMotte U.S. Geological Survey mailing and physical address

5522 Research Park Drive

Baltimore Maryland 21228 USA 443-498-5549 443-498-5510 alamotte@usgs.gov Monday through Friday, 9:00 am - 5:00 pm EST email http://water.usgs.gov/GIS/browse/nlcd01-partitions.jpg Four-tile partion of the conterminous United States. JPEG http://water.usgs.gov/GIS/browse/nlcd01-multizones.jpg Four-tile partion of the conterminous United States showing the downloadable multi zones. JPEG http://water.usgs.gov/GIS/browse/nlcd01-mappingzones.jpg Four-tile partion of the conterminous United States showing the mapping zones. JPEG Tile 3 Multi zone 2 Mapping zone 04: USGS, NOAA, Earth Satellite Corporation. Mapping zone 05: USGS, USGS EROS NLCD Mapping Team. Mapping zone 06: USGS, Sanborn Mapping Company. Mapping zone 12: USGS, USGS Southwest Regional GAP Analysis Project, Geomatics PCI. Mapping zone 13: USGS, Sanborn Mapping Company. Multi zone 4 Mapping zone 16: USGS, USDA Forest Service. Mapping zone 17: USGS, USGS Southwest Regional GAP Analysis Project, Geomatics PCI. Mapping zone 23: USGS, USGS EROS NLCD Mapping Team, USGS Southwest Regional GAP Analysis Project. Mapping zone 28: USGS, USGS EROS NLCD Mapping Team, Colorado, New Mexico and Wyoming GAP Analysis Project. Multi zone 5 Mapping zone 14: USGS, USGS EROS NLCD Mapping Team, USGS Southwest Regional GAP Analysis Project. Mapping zone 15: USGS, USGS EROS NLCD Mapping Team. Mapping zone 24: USGS, USGS Southwest Regional GAP Analysis Project. Mapping zone 25: USGS, USGS EROS NLCD Mapping Team. Multi zone 7 Mapping zone 26: USGS, Mid-Continent Geographic Science Center NLCD Mapping Team. Mapping zone 27: USGS, USGS EROS NLCD Mapping Team. Mapping zone 33: USGS, USGS Rocky Mountain Geographic Science Center NLCD Mapping Team. Mapping zone 34: USGS, Mid-Continent Geographic Science Center NLCD Mapping Team. Multi zone 9 Mapping zone 38: USGS, USGS Rocky Mountain Geographic Science Center NLCD Mapping Team. Multi zone 10 Mapping zone 32: USGS, MDA Federal Inc. Mapping zone 35: USGS, USGS Rocky Mountain Geographic Science Center NLCD Mapping Team. Mapping zone 36: USGS, NOAA, Sanborn Mapping Company. Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.1.0.780 U.S. Geological Survey 2001 raster digital data http://eros.usgs.gov/products/landcover/nlcd.html U.S. Geological Survey Nakagaki, Naomi Price, Curtis V. Falcone, James A. Hitt, Kerie J. Ruddy, Barbara C. 200711 1.0, 2005 raster digital data http://water.usgs.gov/lookup/getspatial?nlcde92 U.S. Geological Survey Hitt, Kerie J. 20060317 Version 3, March 2006 (Replaces Version 2, Sept 2005) raster digital data ESRI feature type: Geometry, Topology Complete for conterminous United States Multi-zone zipped image files were downloaded from the MRLC multi-zone web site <http://www.mrlc.gov/index.asp> on May 21, 2007. Image header files were then built partly based on the format supplied by the USGS LCI (Land Cover Institute) from the web site <http://landcover.usgs.gov/faq.php>; the exact parameters are shown below. Left longitude and top latitude extents were obtained for each image by reading the source information in ArcGIS. Images were then converted to raster data sets using the IMAGEGRID command in Arc workstation. The command PROJECTDEFINE was then applied to each multi-zone grid for proper display and projection definition. The resulting raster data sets were then merged together using the national tile configuration previously established by NAWQA for NLCD, NLCDe, and NLCDeP. Tiles were assembled by using the SETWINDOW command with the NAWQA tiles as SNAP grids for proper alignment with the other national data sets. ****************************************************************************************** Tile 3 Contains all or parts of the following Multi zones and their respective mapping zones. Multi zone 2: mapping zones 04, 05, 06, 12, 13; Multi zone 4: mapping zones 16, 17, 23, 28; Multi zone 5: mapping zones 14, 15, 24, 25; Multi zone 7: mapping zones 26, 27, 33, 34; Multi zone 9: mapping zone 38; Multi zone 10: mapping zones 32, 35, 36; ****************************************************************************************** Example of a header file for Multi zone 1 BYTEORDER M LAYOUT img NROWS 31326 NCOLS 26024 NBANDS 1 NBITS 8 SKIPBYTES 0 ULXMAP -2303835 ULYMAP 3180435 XDIM 30 YDIM 30 ****************************************************************************************** 20070525 Andrew LaMotte U.S. Geological Survey mailing and physical address

5522 Research Park Drive

Baltimore Maryland 21228 USA 443-498-5549 443-498-5510 alamotte@usgs.gov Monday through Friday, 9:00 am - 5:00 pm EST email Raster Grid Cell 53833 73167 1 Albers Conical Equal Area 29.500000 45.500000 -96.000000 23.000000 0.000000 0.000000 row and column 30.000000 30.000000 meters North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 nlcd01_3 Value attribute table. ESRI - Entity Attribute Overview Description. ObjectID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. 100 Derived sequential number. As needed Value Land-cover classification NLCD 2001 11 Open Water: All areas of open water, generally with less than 25 percent cover of vegetation or soil. NLCD 2001 12 Perennial Ice/Snow: All areas characterized by a perennial cover of ice and/or snow, generally greater than 25 percent of total cover. NLCD 2001 21 Developed, Open Space: Includes areas with a mixture of some constructed materials, but mostly vegetation in the form of lawn grasses. Impervious surfaces account for less than 20 percent of total cover. 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. NLCD 2001 22 Developed, Low Intensity: Includes areas with a mixture of constructed materials and vegetation. Impervious surfaces account for 20-49 percent of total cover. These areas most commonly include single-family housing units. NLCD 2001 23 Developed, Medium Intensity: Includes areas with a mixture of constructed materials and vegetation. Impervious surfaces account for 50-79 percent of the total cover. These areas most commonly include single-family housing units. NLCD 2001 24 Developed, High Intensity: Includes highly developed areas where people reside or work in high numbers. Examples include apartment complexes, row houses, and commercial/industrial. Impervious surfaces account for 80-100 percent of the total cover. NLCD 2001 31 Barren Land (Rock/Sand/Clay): Barren areas of bedrock, desert pavement, scarps, talus, slides, volcanic material, glacial debris, sand dunes, strip mines, gravel pits, and other accumulations of earthen material. Generally, vegetation accounts for less than 15 percent of total cover. NLCD 2001 41 Deciduous Forest: Areas dominated by trees generally greater than 5 meters tall, and greater than 20 percent of total vegetation cover. More than 75 percent of the tree species shed foliage simultaneously in response to seasonal change. NLCD 2001 42 Evergreen Forest: Areas dominated by trees generally greater than 5 meters tall, and greater than 20 percent of total vegetation cover. More than 75 percent of the trees maintain their leaves all year. Canopy is never without green foliage. NLCD 2001 43 Mixed Forest: Areas dominated by trees generally greater than 5 meters tall, and greater than 20 percent of total vegetation cover. Neither deciduous nor evergreen species are greater than 75 percent of total tree cover. NLCD 2001 52 Shrub/Scrub: Areas dominated by shrubs less than 5 meters tall. Shrub canopy is typically greater than 20 percent of total vegetation. This class includes true shrubs, young trees in an early successional stage or trees stunted from environmental conditions. NLCD 2001 71 Grassland/Herbaceous: Areas dominated by graminoid or herbaceous vegetation, generally greater than 80 percent of total vegetation. These areas are not subject to intensive management such as tilling, but can be utilized for grazing. NLCD 2001 81 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. Pasture/hay vegetation accounts for greater than 20 percent of total vegetation. NLCD 2001 82 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. Crop vegetation accounts for greater than 20 percent of total vegetation. This class also includes all land being actively tilled. NLCD 2001 90 Woody Wetlands: Areas where forest or shrubland vegetation accounts for greater than 20 percent of vegetative cover and the soil or substrate is periodically saturated with or covered with water. NLCD 2001 95 Emergent Herbaceous Wetlands: Areas where perennial herbaceous vegetation accounts for greater than 80 percent of vegetative cover and the soil or substrate is periodically saturated with or covered with water. NLCD 2001 Count Count is the total number of cells in a grid for each unique value. The value attribute table (VAT) stores the attribute data for integer grids. VALUE is the item that represents a particular class of cells and COUNT is the number of cells in the class. Calculated Sequential unique whole numbers that are automatically generated. 100 Derived number of grid cells. As needed 11 - Open Water 12 - Perennial Ice/Snow 21 - Developed, Open Space 22 - Developed, Low Intensity 23 - Developed, Medium Intensity 24 - Developed, High Intensity 31 - Barren Land (Rock/Sand/Clay) 41 - Deciduous Forest 42 - Evergreen Forest 52 - Shrub/Scrub 71 - Grasslands/Herbaceous 81 - Pasture/Hay 82 - Cultivated Crops 90 - Woody Wetlands 95 - Emergent Herbaceous Wetlands NLCD 2001 U.S. Geological Survey Ask USGS -- Water Webserver Team mailing address

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Reston VA 20192 1-888-275-8747 (1-888-ASK-USGS) http://water.usgs.gov/user_feedback_form.html Downloadable Data Although this data set has been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in ArcInfo format, this metadata file may include some ArcInfo-specific terminology. ARC INFO GRID 1.0 gziped arctar file Categorical raster data for northwest quadrant of the United States gunzip then use tar -xvf nlcd01_1.tar 488.817 http://water.usgs.gov/GIS/dsdl/nlcd01_3.tar.gz Not specified free 20081006 U.S. Geological Survey Ask USGS Water Webserver Team mailing address

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Reston Virginia 20192 USA 1-888-275-8747 (1-888-ASK-USGS) http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+nlcd01_3 Monday through Friday, 9:00 am - 5:00 pm EST FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998