1970's Land use data refined with 2000 population data to indicate new residential development for the conterminous United States

Metadata also available as

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Hitt, Kerie J.
Publication_Date: 20050315
Title:
1970's Land use data refined with 2000 population data to indicate new residential development for the conterminous United States
Edition: Version 1
Geospatial_Data_Presentation_Form: raster digital data
Online_Linkage: <http://water.usgs.gov/lookup/getspatial?newlu00g>
Description:
Abstract:
This data set represents U.S. Geological Survey (USGS) historical Land Use and Land Cover (LULC) from the 1970's that has been refined with 2000 population density at the block group level to indicate new residential development representative of the early 2000's. Any area having a population density of at least 1,000 people per square mile had been re-classified as "urban" land in this data set.
Purpose:
This is one of the ancillary GIS (geographic information system) data layers developed to characterize USGS National Water-Quality Assessment (NAWQA) sampling sites and study areas for national synthesis of water-quality data. For background on the design of the NAWQA program see Gilliom and others (1995).
Supplemental_Information:
This data set was developed by the NAWQA program to fill a requirement for a nationally consistent land-use data base that would define where "urban" land existed during the early 2000's for comparison to a similar product prepared with 1990 population to represent the 1990's.
The best available nationally consistent land-use data base available at the time NAWQA began (1992) was the LULC data that was developed by USGS under the Land Use Data Analysis (LUDA) program in the 1970's-1980's. LULC maps were delineated manually from aerial photography, and LULC codes were assigned using a hierarchical land use and land cover classification scheme described by Anderson and others (1976). The maps were published by quadrangles at scales of 1:250,000 and 1:100,000 (USGS, 1990). The native digital format of the USGS LULC data is Geographic Information Retrieval and Analysis System (GIRAS).
In 1992, a similar nationally consistent LULC data base for the 1990's did not exist. NAWQA's approach was to take the 1970's LULC data as a base and then enhance it with more current, more detailed ancillary information on population (Hitt, 1994). The procedure was used first with 1990 population data. Later the same approach was used with 2000 population data.
NAWQA developed a classification scheme for defining "residential" land use based on population density. The classification scheme determined "residential" land as any area with population density of at least 1,000 people per square mile (386 people per square kilometer).
The procedure to refine the LULC data was to overlay the 1970's land use with 2000 population density by block group. Any area in the derivative product that met the following criteria was re-assigned a new land use code of "new residential:" (1) original LULC land use was not urban or built-up, (2) original LULC land use was not water, and (3) 2000 population density was at least 1,000 people per square mile.
The ArcInfo Workstation grid is stored in the newlu00g.tgz file (gzipped tar file). The uncompressed file size of newlu00g.tar is about 109 MB. Ways to extract the grid from the .tgz archive file include TARARC, Winzip, UnStuffIt, or the following GNU utilities for WIN32:
gunzip newlu00g.tgz tar xvof newlu00g.tar
The grid "newlu00g" will be in a subdirectory called arctar00000.
arctar00000/ arctar00000/info/ arctar00000/info/arc.dir arctar00000/info/arc0000.dat arctar00000/info/arc0000.nit arctar00000/info/arc0001.dat arctar00000/info/arc0001.nit arctar00000/info/arc0002.dat arctar00000/info/arc0002.nit arctar00000/info/arc0002r.001 arctar00000/log arctar00000/newlu00g/ arctar00000/newlu00g/dblbnd.adf arctar00000/newlu00g/hdr.adf arctar00000/newlu00g/log arctar00000/newlu00g/prj.adf arctar00000/newlu00g/sta.adf arctar00000/newlu00g/vat.adf arctar00000/newlu00g/w001001.adf arctar00000/newlu00g/w001001x.adf arctar00000/newlu00g.aux
Related_Spatial_and_Tabular_Data_Sets:
The data set is provided as a GeoTIFF image (newlu00g.tif is contained in newlu00g.tar.gz) as well as native ArcInfo Workstation GRID format (newlu00g.tgz). The GeoTIFF file is provided as a nonproprietary format in case the user's software cannot access the data in ArcInfo Workstation GRID format. The uncompressed GeoTIFF file size is 1348131109 bytes.
The following table describes the index values stored in an embedded color map in the GeoTIFF image:
Index RGB Values Value R G B ----------------------------------------------------------------- 0 no data 10 255 20 147 11 255 0 255 12 255 0 0 13 208 32 144 14 255 105 180 15 255 192 203 16 238 130 238 17 255 228 225 21 255 215 0 22 255 255 0 23 255 140 0 24 238 221 130 31 255 250 205 32 244 164 96 33 218 165 32 41 152 251 152 42 0 255 0 43 124 252 0 51 135 206 250 52 0 191 255 53 0 255 255 54 175 238 238 61 127 255 212 62 72 209 204 71 233 150 122 72 184 134 11 73 210 180 140 74 165 42 42 75 188 143 143 76 139 69 19 77 143 188 143 81 218 112 214 82 123 104 238 83 138 43 226 84 0 0 205 85 160 32 240 91 211 211 211 92 105 105 105
The newlu00g.aux (auxiliary) file archived with the .tif file stores coordinate system information for the .tif file and is recognized by ArcGIS.
The newlu00g.clr (colormap) file specifies the colors to be used for displaying ArcInfo Workstation grid cell values. This is an ascii file containing the index numbers 0-255 followed by RGB values:
Index -- RGB Values --- Value red green blue (LULC code) ---------------------------- # value red green blue 0 30 30 30 1 30 30 30 2 30 30 30 3 30 30 30 4 30 30 30 5 30 30 30 6 30 30 30 7 30 30 30 8 30 30 30 9 30 30 30 10 255 20 147 11 255 0 255 12 255 0 0 13 208 32 144 14 255 105 180 15 255 192 203 16 238 130 238 17 255 228 225 18 30 30 30 19 30 30 30 20 30 30 30 21 255 215 0 22 255 255 0 23 255 140 0 24 238 221 130 25 30 30 30 26 30 30 30 27 30 30 30 28 30 30 30 29 30 30 30 30 30 30 30 31 255 250 205 32 244 164 96 33 218 165 32 34 30 30 30 35 30 30 30 36 30 30 30 37 30 30 30 38 30 30 30 39 30 30 30 40 30 30 30 41 152 251 152 42 0 255 0 43 124 252 0 44 30 30 30 45 30 30 30 46 30 30 30 47 30 30 30 48 30 30 30 49 30 30 30 50 30 30 30 51 135 206 250 52 0 191 255 53 0 255 255 54 175 238 238 55 30 30 30 56 30 30 30 57 30 30 30 58 30 30 30 59 30 30 30 60 30 30 30 61 127 255 212 62 72 209 204 63 30 30 30 64 30 30 30 65 30 30 30 66 30 30 30 67 30 30 30 68 30 30 30 69 30 30 30 70 30 30 30 71 233 150 122 72 184 134 11 73 210 180 140 74 165 42 42 75 188 143 143 76 139 69 19 77 143 188 143 78 30 30 30 79 30 30 30 80 30 30 30 81 218 112 214 82 123 104 238 83 138 43 226 84 0 0 205 85 160 32 240 86 30 30 30 87 30 30 30 88 30 30 30 89 30 30 30 90 30 30 30 91 211 211 211 92 105 105 105 93 30 30 30 94 30 30 30 95 30 30 30 96 30 30 30 97 30 30 30 98 30 30 30 99 30 30 30 100 30 30 30 101 30 30 30 102 30 30 30 103 30 30 30 104 30 30 30 105 30 30 30 106 30 30 30 107 30 30 30 108 30 30 30 109 30 30 30 110 30 30 30 111 30 30 30 112 30 30 30 113 30 30 30 114 30 30 30 115 30 30 30 116 30 30 30 117 30 30 30 118 30 30 30 119 30 30 30 120 30 30 30 121 30 30 30 122 30 30 30 123 30 30 30 124 30 30 30 125 30 30 30 126 30 30 30 127 30 30 30 128 30 30 30 129 30 30 30 130 30 30 30 131 30 30 30 132 30 30 30 133 30 30 30 134 30 30 30 135 30 30 30 136 30 30 30 137 30 30 30 138 30 30 30 139 30 30 30 140 30 30 30 141 30 30 30 142 30 30 30 143 30 30 30 144 30 30 30 145 30 30 30 146 30 30 30 147 30 30 30 148 30 30 30 149 30 30 30 150 30 30 30 151 30 30 30 152 30 30 30 153 30 30 30 154 30 30 30 155 30 30 30 156 30 30 30 157 30 30 30 158 30 30 30 159 30 30 30 160 30 30 30 161 30 30 30 162 30 30 30 163 30 30 30 164 30 30 30 165 30 30 30 166 30 30 30 167 30 30 30 168 30 30 30 169 30 30 30 170 30 30 30 171 30 30 30 172 30 30 30 173 30 30 30 174 30 30 30 175 30 30 30 176 30 30 30 177 30 30 30 178 30 30 30 179 30 30 30 180 30 30 30 181 30 30 30 182 30 30 30 183 30 30 30 184 30 30 30 185 30 30 30 186 30 30 30 187 30 30 30 188 30 30 30 189 30 30 30 190 30 30 30 191 30 30 30 192 30 30 30 193 30 30 30 194 30 30 30 195 30 30 30 196 30 30 30 197 30 30 30 198 30 30 30 199 30 30 30 200 30 30 30 201 30 30 30 202 30 30 30 203 30 30 30 204 30 30 30 205 30 30 30 206 30 30 30 207 30 30 30 208 30 30 30 209 30 30 30 210 30 30 30 211 30 30 30 212 30 30 30 213 30 30 30 214 30 30 30 215 30 30 30 216 30 30 30 217 30 30 30 218 30 30 30 219 30 30 30 220 30 30 30 221 30 30 30 222 30 30 30 223 30 30 30 224 30 30 30 225 30 30 30 226 30 30 30 227 30 30 30 228 30 30 30 229 30 30 30 230 30 30 30 231 30 30 30 232 30 30 30 233 30 30 30 234 30 30 30 235 30 30 30 236 30 30 30 237 30 30 30 238 30 30 30 239 30 30 30 240 30 30 30 241 30 30 30 242 30 30 30 243 30 30 30 244 30 30 30 245 30 30 30 246 30 30 30 247 30 30 30 248 30 30 30 249 30 30 30 250 30 30 30 251 30 30 30 252 30 30 30 253 30 30 30 254 30 30 30 255 30 30 30
-------------------------------------------------------------- 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.
Use of trade names in this report is for identification purposes only and does not constitute endorsement by the U.S. Geological Survey.
Time_Period_of_Content:
Time_Period_Information:
Multiple_Dates/Times:
Single_Date/Time:
Calendar_Date: 2001
Single_Date/Time:
Calendar_Date: 2004
Currentness_Reference:
The data set is intended to represent conditions for the early 2000's.
Status:
Progress: Complete
Maintenance_and_Update_Frequency:
No updates are planned unless errors or updates in the data occur.
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -128.002463
East_Bounding_Coordinate: -65.258046
North_Bounding_Coordinate: 51.691388
South_Bounding_Coordinate: 22.838701
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: inlandWaters
Theme_Keyword: Geographic Information Retrieval and Analysis System
Theme_Keyword: GIRAS
Theme_Keyword: Anderson land use/land cover
Theme_Keyword: Land Use Data Analysis
Theme_Keyword: LUDA
Theme_Keyword: LULC
Theme_Keyword: land use
Theme_Keyword: land cover
Theme_Keyword: urbanization
Theme_Keyword: residential land use
Theme_Keyword: urban land use
Theme_Keyword: 2000 population
Place:
Place_Keyword_Thesaurus: none
Place_Keyword: Conterminous United States
Access_Constraints: None.
Use_Constraints: This data should not be used at scales smaller than 1:250,000.
Browse_Graphic:
Browse_Graphic_File_Name: <http://water.usgs.gov/GIS/browse/newlu00g.gif>
Browse_Graphic_File_Description:
Map of 1970's land use refined with 2000 population data to indicate new residential development
Browse_Graphic_File_Type: GIF
Native_Data_Set_Environment:
Microsoft Windows 2000 Version 5.1 (Build 2600) Service Pack 1; ESRI ArcCatalog 9.0.0.535
Cross_Reference:
Citation_Information:
Originator: James R. Anderson
Originator: Ernest E. Hardy
Originator: John T. Roach
Originator: Richard E. Witmer
Publication_Date: 1976
Title:
A land use and land cover classification system for use with remote sensor data
Series_Information:
Series_Name: USGS Professional Paper
Issue_Identification: 964
Publication_Information:
Publication_Place: Washington, DC
Publisher: U.S. Government Printing Office
Online_Linkage: <http://landcover.usgs.gov/pdf/anderson.pdf>
Cross_Reference:
Citation_Information:
Originator: USGS
Publication_Date: 1986
Title:
Land use and land cover data digital data from 1:250,000- and 1:100,000-scale maps, Data user guide 4
Edition: First printing 1986, Second printing 1990
Publication_Information:
Publication_Place: Reston, VA
Publisher: USGS
Online_Linkage: <http://www.vterrain.org/Culture/LULC/Data_Users_Guide_4.html>
Cross_Reference:
Citation_Information:
Originator: Kerie J. Hitt
Publication_Date: 1994
Title:
Refining 1970's land-use data with 1990 population data to indicate new residential development
Series_Information:
Series_Name: USGS Water-Resources Investigations Report
Issue_Identification: 94-4250
Publication_Information:
Publication_Place: Reston, Virginia
Publisher: U.S. Geological Survey
Online_Linkage: <http://water.usgs.gov/nawqa/wri94-4250/>
Cross_Reference:
Citation_Information:
Originator: Curtis Price
Originator: Naomi Nakagaki
Originator: Kerie Hitt
Originator: Rick Clawges
Publication_Date: 2003
Title: Mining GIRAS: Improving on a national treasure of land use data
Series_Information:
Series_Name: Proceedings of the ESRI International User Conference
Issue_Identification: 2003
Publication_Information:
Publication_Place: Redlands, CA
Publisher: ESRI
Online_Linkage: <http://gis.esri.com/library/userconf/proc03/p0904.pdf>
Cross_Reference:
Citation_Information:
Originator: R.J. Gilliom
Originator: W.M. Alley
Originator: M.E. Gurtz
Publication_Date: 1995
Title:
Design of the National Water-Quality Assessment Program--Occurrence and distribution of water-quality conditions
Series_Information:
Series_Name: USGS Circular
Issue_Identification: 1112
Publication_Information:
Publication_Place: Reston, VA
Publisher: USGS
Online_Linkage: <http://pubs.water.usgs.gov/circ1112>

Data_Quality_Information:
Logical_Consistency_Report:
The data set was spot checked with the 100-m source grid of enhanced LULC and a similar derivative product consisting of a 100-m grid of LULC updated with 1990 population.
Some logical assumptions are that areas that were "new residential" urban land in 1990 would not revert to another land use in 2000 and that "new residential" areas would expand from 1990 to 2000. However, between 1990 and 2000, some Census block group boundaries changed, and population density shifted. As a result, some areas considered to be "new residential" in 1990 no longer are considered to be "new residential" in 2000. In some places, areas of "new residential" appear to be shrinking in 2000 because of the different block group boundaries. Population density in part of the area that used to be considered new residential is less than the population density threshold value in 2000. We do not plan to recompute population using another Census Bureau parameter.
Completeness_Report: Complete for conterminous United States.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report: Not checked.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Robin G. Fegeas
Originator: Robert W. Claire
Originator: Stephen C. Guptill
Originator: K. Eric Anderson
Originator: Cheryl A. Hallam
Publication_Date: 1983
Title:
Digital cartographic data standards: Land use and land cover digital data
Geospatial_Data_Presentation_Form: digital data in GIRAS format
Series_Information:
Series_Name: USGS Circular
Issue_Identification: 895-E
Publication_Information:
Publication_Place: Reston, VA
Publisher: USGS
Online_Linkage: <http://edc.usgs.gov/products/landcover/lulc.html>
Source_Scale_Denominator: 250000
Type_of_Source_Media: digital
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1970
Ending_Date: 1985
Source_Currentness_Reference: Ground condition, 1965-1980
Source_Citation_Abbreviation: LULC
Source_Contribution:
This data set provided land use and land cover representative of the 1970's-1980's for 1:250,000- or 1:100,000-scale quadrangles, compiled from aerial photography. The native digital format of the USGS LULC data is Geographic Information Retrieval and Analysis System (GIRAS). The LULC provided the original base of nationally consistent land use that was enhanced by users over the years and then finally was refined with more recent ancillary data on 2000 population to depict urban areas more representative of the 2000's.
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Environmental Protection Agency (USEPA)
Publication_Date: 1994
Title:
Land use and land cover data digital data from 1:250,000- and 1:100,000-Scale maps, digital quadrangles converted to ArcInfo format
Geospatial_Data_Presentation_Form: digital data in ArcInfo Export format
Publication_Information:
Publication_Place: Washington, DC
Publisher: USEPA
Online_Linkage: <http://www.epa.gov/ngispgm3/spdata/EPAGIRAS/>
Source_Scale_Denominator: 250000
Type_of_Source_Media: digital
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1970
Ending_Date: 1985
Source_Currentness_Reference: Ground condition, 1965-1980
Source_Citation_Abbreviation: EPAGIRAS
Source_Contribution:
The Environmental Protection Agency worked with USGS to convert the original LULC quadrangles from GIRAS format to ArcInfo Workstation coverages. After correcting minor errors in the coverages, the USGS NAWQA program used the EPAGIRAS data set in water-quality assessments during the mid-1990's.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Kerie Hitt
Publication_Date: 20031124
Title:
2000 population density by block group for the conterminous United States
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place: Reston, VA
Publisher: USGS
Online_Linkage: <http://water.usgs.gov/lookup/getspatial?uspopd00x10g>
Source_Scale_Denominator: 100000
Type_of_Source_Media: digital raster data
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2000
Source_Currentness_Reference: As of 2000 Census
Source_Citation_Abbreviation: USPOPD00X10G
Source_Contribution:
This data set provided a 100-m resolution ArcInfo Workstation grid (raster data set in which each cell is 100-m x 100-m) of 2000 population density by block group derived from CensusCD 2000 Short Form Blocks prepared by GeoLytics, E. Brunswick, NJ from the Census Summary File 1 (SF 1) and cartographic boundary files for Census Block Groups 2000. Grid cell values represent population density in people per square kilometer multiplied by 10 so that the data could be stored as integer. The population data was used to enhance the older, less-detailed LULC land use data to represent urban areas more representative of the early 2000's.
Process_Step:
Process_Description:
During the early 1990's, USGS and the Environmental Protection Agency (USEPA) converted USGS LULC maps from GIRAS format to ArcInfo Workstation coverages. USEPA disseminated the ArcInfo Workstation coverages of LULC quads as ArcInfo export files (USEPA, 1994).
During the mid- to late 1990's, the USGS NAWQA program downloaded coverages of LULC quads from USEPA and corrected many minor errors in the quads. NAWQA used this corrected set of quads for water-quality applications during the mid-1990's. However, many coding and topological errors still remained in the NAWQA version of the LULC coverages.
During 2002-2003, NAWQA developed an enhanced LULC data set that was more accurate, topologically clean, and seamless. (For example, land use attribute errors were fixed and quad boundaries were matched.) Price and others (2003) describe the GIS processing steps to create the enhanced LULC data set. The enhanced version of LULC is the "best available" version of the historical USGS LULC data set.
Process_Date: 2000
Process_Step:
Process_Description:
The ArcInfo Workstation seamless polygon coverage of enhaned LULC data was converted to a 30-m resolution ArcInfo Workstation grid (a raster data set in which each grid cell is 30-m by 30-m).
Process_Date: 2003
Process_Step:
Process_Description:
The 30-m ArcInfo Workstation grid of the enhanced LULC data set (girasg) was refined using the 100-m resolution ArcInfo Workstation grid of 2000 Census block group population density using the methods described in Hitt (1994).
Any area having a 2000 population density of at least 1,000 people per square mile (coded as 3,860 people per square km in the 100-m population density grid) that was not coded as urban or water in the LULC input data, was re-coded as "new residential" land use in the output data set. A numeric land use code of "10" was assigned to the "new residential" areas. This was accomplished using the following ArcInfo Workstation GRID commands:
NEWLU00G = con ( ( girasg ge 11 and girasg le 17 ) or ( girasg ge 51 and girasg le 54 ) or ( girasg eq 0 ), girasg, con(uspopd00x10g ge 3860,10,girasg) )
The resulting grid has 38 categorical values: 37 corresponding to the original Anderson level 2 land use land cover categories plus 1 for the "new residential" category. Because the quality of the output data is no better than the coarsest resolution of the input data (100 meters), the resolution of the output grid was set to 100 meters even though the resolution of the input LULC data grid was 30 meters. The ArcGIS software automatically resamples unequal input cell sizes to the output cell size.
Process_Date: 20030128
Process_Step:
Process_Description:
The grid was converted to a GeoTIFF image for distribution using the following ArcInfo Workstation command:
gridimage newlu00g newlu00g.clr newlu00g tiff
Process_Date: 20050314

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Grid Cell
Row_Count: 29150
Column_Count: 46240
Vertical_Count: 1

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Albers Conical Equal Area
Albers_Conical_Equal_Area:
Standard_Parallel: 29.5
Standard_Parallel: 45.5
Longitude_of_Central_Meridian: -96
Latitude_of_Projection_Origin: 23
False_Easting: 0.00000
False_Northing: 0.00000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 100.0
Ordinate_Resolution: 100.0
Planar_Distance_Units: Meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: GRS1980
Semi-major_Axis: 6378137.000
Denominator_of_Flattening_Ratio: 298.257222

Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
The value of each 100-m by 100-m grid cell is the level 2 land use and land cover classification code (Anderson and others, 1976) or a new level 2 code "10" (Hitt, 1994).
The new code "10" indicates "new residential development," that is, areas having 2000 population density of at least 1,000 people per square mile (386 people per square kilometer) that were not urban or water in the source LULC data.
The ArcInfo Workstation grid has a .VAT (value attribute table), with two fields, VALUE and COUNT.
VALUE is the 2-digit LULC code (Anderson level 2) or new code "10."
COUNT is the number of cells (assigned by ArcInfo) in each LULC class.
The ArcInfo Workstation grid also has a .STA (statistics) file, with the items MIN, MAX, MEAN, and STDV.
MIN is the minimum value in the grid (10).
MAX is the maximum value in the grid (92).
MEAN is the arithmetic mean of the values in the grid. (MEAN is meaningless for categorical LULC data.)
STDV is the standard deviation of the values in the grid. (STDV is meaningless for categorical LULC data.)
In the GeoTIFF image file, each index number corresponds to the 2-digit LULC code (Anderson level 2) or new code "10."
Entity_and_Attribute_Detail_Citation:
Land use and land cover classification codes and descriptions are provided in Anderson and others (1976). (See <http://landcover.usgs.gov/pdf/anderson.pdf>.)
The Anderson classification system is:
LEVEL 1 LEVEL 2 1 Urban or built-up land 11 Residential 12 Commercial and services 13 Industrial 14 Transportation, communication, and utilities 15 Industrial and commercial complexes 16 Mixed urban or built-up land 17 Other urban or built-up land
2 Agricultural land 21 Cropland and pasture 22 Orchards, groves, vineyards, nurseries, and ornamental horticultural areas 23 Confined feeding operations 24 Other agricultural land
3 Rangeland 31 Herbaceous rangeland 32 Shrub and brush rangeland 33 Mixed rangeland
4 Forest land 41 Deciduous forest land 42 Evergreen forest land 43 Mixed forest land
5 Water 51 Streams and canals 52 Lakes 53 Reservoirs 54 Bays and estuaries
6 Wetland 61 Forested wetland 62 Nonforested wetland
7 Barren land 71 Dry salt flats 72 Beaches 73 Sandy areas other than beaches 74 Bare exposed rock 75 Strip mines, quarries, and gravel pits 76 Transitional areas 77 Mixed barren land
8 Tundra 81 Shrub and brush tundra 82 Herbaceous tundra 83 Bare ground tundra 84 Wet tundra 85 Mixed tundra
9 Perennial snow or ice 91 Perennial snowfields 92 Glaciers

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Position: Ask USGS - Water Webserver Team
Contact_Address:
Address_Type: mailing address
Address: 507 National Center
City: Reston
State_or_Province: VA
Postal_Code: 20192
Country: USA
Contact_Voice_Telephone: 1-888-275-8747 (1-888-ASK-USGS)
Contact_Electronic_Mail_Address:
<http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+newlu00g>
Distribution_Liability:
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.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ArcInfo Workstation Grid
Format_Information_Content: 100-m x 100-m cell size raster data set
File_Decompression_Technique: gzip -d; gunzip
Transfer_Size: 57 megabytes
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://water.usgs.gov/GIS/dsdl/newlu00g.tgz>
Digital_Form:
Digital_Transfer_Information:
Format_Name: GeoTIFF image
Format_Information_Content: GeoTIFF file and .aux file
File_Decompression_Technique: gzip -d; gunzip
Transfer_Size: 61 megabytes
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://water.usgs.gov/GIS/dsdl/newlu00g.tar.gz>
Digital_Form:
Digital_Transfer_Information:
Format_Name: ascii
Format_Information_Content: Color map file for ArcInfo Workstation Grid
Transfer_Size: 3.3 kilobytes
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://water.usgs.gov/GIS/dsdl/newlu00g.clr>
Fees: None. This dataset is provided by USGS as a public service.

Metadata_Reference_Information:
Metadata_Date: 20050314
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Position: Ask USGS - Water Webserver Team
Contact_Address:
Address_Type: mailing address
Address: 507 National Center
City: Reston
State_or_Province: VA
Postal_Code: 20192
Country: USA
Contact_Voice_Telephone: 1-888-275-8747 (1-888-ASK-USGS)
Contact_Electronic_Mail_Address:
<http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+newlu00g>
Metadata_Standard_Name:
FGDC Content Standards for Digital Geospatial Metadata ("CSDGM version 2")
Metadata_Standard_Version: FGDC-STD-001-1998

City: Reston

Country: US

City: Reston

Country: US

Generated by mp version 2.9.6 on Wed Apr 10 12:34:17 2013