100-Meter Resolution Land/Water Mask of the Conterminous United States, 2013

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Abstract/Contents

Abstract
This raster layer is a georeferenced image containing a 100-meter resolution land and water mask of the conterminous United States, with separate values for oceans and for land areas of the United States, Canada, Mexico, the Bahamas, and Cuba. This layer is part of the 1997-2014 edition of the National Atlas of the United States.
Purpose
This 100-meter resolution mask image is not intended to be shown as a map layer. Instead, it is a cartographic tool that may be used to identify, select, and adjust areas on other 100-meter resolution image data sets distributed by the National Atlas of the United States.

Description

Type of resource cartographic, software, multimedia
Form GeoTIFF
Place Rolla, MO, US
Publisher National Atlas of the United States
Publication date 2013
Language English
Digital origin born digital
Map data Scale not given. ; Custom projection W 133°--W 59°/N 51°--N 19°W 130°34ʹ26ʺ--W 62°39ʹ50ʺ/N 52°23ʹ41ʺ--N 21°6ʹ41ʺ, Scale not given ; EPSG::4326

Creators/Contributors

Creator Geological Survey (U.S.)

Subjects

Subject Landforms
Subject Bodies of water
Subject United States
Subject Alabama
Subject Arizona
Subject Arkansas
Subject Colorado
Subject Connecticut
Subject Delaware
Subject Florida
Subject Georgia
Subject Idaho
Subject Illinois
Subject Indiana
Subject Iowa
Subject Kansas
Subject Kentucky
Subject Louisiana
Subject Maine
Subject Maryland
Subject Massachusetts
Subject Michigan
Subject Minnesota
Subject Mississippi
Subject Missouri
Subject Montana
Subject Nebraska
Subject Nevada
Subject New Hampshire
Subject New Jersey
Subject New Mexico
Subject New York (State)
Subject North Carolina
Subject North Dakota
Subject Ohio
Subject Oklahoma
Subject Oregon
Subject Pennsylvania
Subject Rhode Island
Subject South Carolina
Subject South Dakota
Subject Tennessee
Subject Texas
Subject Utah
Subject Vermont
Subject Virginia
Subject Washington (D.C.)
Subject Washington (State)
Subject West Virginia
Subject Wisconsin
Subject Wyoming
Subject 2013
Subject Imagery and Base Maps
Subject Oceans
Genre Geospatial data
Genre Cartographic dataset

Bibliographic information

Supplemental information The following pixel values are used in this map layer: >100 Ocean >200 Land ? United States >210 Land ? Canada >220 Land ? Mexico >230 Land ? Bahamas and Cuba Included with the GeoTIFF are an information file (.xml), an auxiliary information file (.aux.xml), an image overview file (.ovr), a value attribute database file (.vat.dbf), a .tfw file (more information included below), and a .prj file (more information included below.) The contents of the associated world file (.tfw) are: >100.0 >0.0 >0.0 >-100.0 >-2539950.0 >3257950.0 The projection (.prj) file contains the following information: >PROJCS["Albers_NAD83_L48", >GEOGCS["GCS_North_American_1983", >DATUM["D_North_American_1983", >SPHEROID["GRS_1980",6378137.0,298.257222101]], >PRIMEM["Greenwich",0.0], >UNIT["Degree",0.0174532925199433]], >PROJECTION["Albers"], >PARAMETER["False_Easting",0.0], >PARAMETER["False_Northing",0.0], >PARAMETER["Central_Meridian",-96.0], >PARAMETER["Standard_Parallel_1",29.5], >PARAMETER["Standard_Parallel_2",45.5], >PARAMETER["Latitude_Of_Origin",23.0], >UNIT["Meter",1.0]] Data set extent in meters (Albers Equal-Area Conic projection) >North 3258000 >West -2540000 >East 2441000 >South 119000 There are no NULL or NODATA values in the GeoTIFF. Information about National Atlas Web services can be found on the Web Map and Web Feature Services page; see <http://nationalatlas.gov/infodocs/webservices.html.>
Use limitation None. Acknowledgment of The National Atlas of the United States of America would be appreciated in products derived from these data.
WGS84 Cartographics This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.
Location https://purl.stanford.edu/hg857sv3679

Access conditions

Use and reproduction
This item is in the public domain. There are no restrictions on use.
Copyright
This work is in the Public Domain, meaning that it is not subject to copyright.

Preferred citation

U.S. Geological Survey. (2013). 100-Meter Resolution Land/Water Mask of the Conterminous United States, 2013. National Atlas of the United States. Available at: http://purl.stanford.edu/hg857sv3679.

Collection

National atlas of the United States of America, 1997-2014

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