<?xml version='1.0' encoding='UTF-8'?>
<metadata xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <idinfo>
    <citation>
      <citeinfo>
        <origin>U.S. Geological Survey, National Geospatial Technical Operations
                    Center</origin>
        <pubdate>2024</pubdate>
        <title>USGS Map Indices Downloadable Data Collection</title>
        <geoform>vector digital data</geoform>
        <pubinfo>
          <pubplace>Reston, VA</pubplace>
          <publish>U.S. Geological Survey</publish>
        </pubinfo>
        <onlink>https://www.usgs.gov/the-national-map-data-delivery</onlink>
      </citeinfo>
    </citation>
    <descript>
      <abstract>This data consists of data grids for the United States, including
                1 X 2 Degree, 1 X 1 Degree, 30 X 60 Minute, 15 X 15 Minute, 7.5 X 7.5 Minute, and
                3.75 X 3.75 Minute, along with custom-sized products, where a traditionally-published map exists. The grid was generated using ESRI ArcGIS Pro software. The grids represent the extent of topographic maps published by the USGS.</abstract>
      <purpose>This dataset depicts delineations of area on the surface of the earth. It is
                general purpose data for users who are not GIS experts.</purpose>
    </descript>
    <timeperd>
      <timeinfo>
        <rngdates>
          <begdate>2014</begdate>
          <enddate>present</enddate>
        </rngdates>
      </timeinfo>
      <current>publication date</current>
    </timeperd>
    <status>
      <progress>Complete</progress>
      <update>Irregular</update>
    </status>
    <spdom>
      <bounding>
        <westbc>-179.229655487448</westbc>
        <eastbc>179.856674735386</eastbc>
        <northbc>71.4395725901531</northbc>
        <southbc>-14.4246950942767</southbc>
      </bounding>
    </spdom>
    <keywords>
      <theme>
        <themekt>USGS Metadata Identifier</themekt>
        <themekey>USGS:e1c3618a-b210-475c-8b9d-b56439917b6f</themekey>
      </theme>
      <theme>
        <themekt>ISO 19115 Topic Category</themekt>
        <themekey>boundaries</themekey>
      </theme>
      <theme>
        <themekt>None</themekt>
        <themekey>United States of America</themekey>
        <themekey>cells</themekey>
        <themekey>polygon grid</themekey>
        <themekey>Map Indices</themekey>
        <themekey>State</themekey>
        <themekey>FileGDB 10.1</themekey>
      </theme>
      <place>
        <placekt>Geographic Names Information System</placekt>
        <placekey>US</placekey>
        <placekey>United States</placekey>
      </place>
    </keywords>
    <accconst>None</accconst>
    <useconst>None. Acknowledgment of the U.S. Geological Survey would be appreciated for
            products derived from these data.</useconst>
    <ptcontac>
      <cntinfo>
        <cntorgp>
          <cntorg>U.S. Geological Survey</cntorg>
        </cntorgp>
        <cntaddr>
          <addrtype>mailing and physical</addrtype>
          <address>12201 Sunrise Valley Drive, MS 523</address>
          <city>Reston</city>
          <state>Virginia</state>
          <postal>20192</postal>
        </cntaddr>
        <cntvoice>1-888-ASK-USGS (1-888-275-8747)</cntvoice>
        <cntemail>tnm_help@usgs.gov</cntemail>
        <hours>Monday through Friday 8:00 AM to 4:00 PM</hours>
        <cntinst>Please visit https://answers.usgs.gov/, call 1-888-ASK-USGS or email tnm_help@usgs.gov to contact us.</cntinst>
      </cntinfo>
    </ptcontac>
    <browse>
      <browsen>https://prd-tnm.s3.amazonaws.com/StagedProducts/Collections/Browse/map_indicies_browse.jpg</browsen>
      <browsed>Thumbnail JPG image</browsed>
      <browset>JPEG</browset>
    </browse>
  </idinfo>
  <dataqual>
    <attracc>
      <attraccr>Cartographic content is derived from USGS national geospatial databases. The
                data is owned and hosted by the USGS, but does not preclude using data sources owned
                and hosted by other organizations, provided that these sources have been approved by
                the USGS data program.</attraccr>
    </attracc>
    <logic>Data is comprised of polygons with segments making up inner and outer boundaries that
            end to end completely enclose an area. No duplicate features exist.</logic>
    <complete>Each layer is extracted from the USGS national geospatial databases.</complete>
    <posacc>
      <horizpa>
        <horizpar>This US map product is compiled to meet National Map Accuracy Standards
                    (NMAS). NMAS horizontal accuracy requires that at least 90 percent of
                    well-defined points tested are within 0.02 inch of the true position. In this
                    product, the projection line, and grids are believed to meet NMAS. Positional
                    accuracy of the other data layers is less controllable because of diversity of
                    data sources, and may not meet NMAS.</horizpar>
      </horizpa>
      <vertacc>
        <vertaccr>Vertical accuracy is not applicable to this dataset.</vertaccr>
      </vertacc>
    </posacc>
    <lineage>
      <srcinfo>
        <srccite>
          <citeinfo>
            <origin>U.S. Geological Survey, National Geospatial Technical Operations Center</origin>
            <pubdate>2022</pubdate>
            <title>Geographic Names Information System (GNIS)</title>
            <geoform>Vector digital data</geoform>
            <othercit>The Geographic Names Information System (GNIS) is the Federal and
                            national standard for geographic nomenclature. The U.S. Geological
                            Survey developed the GNIS in support of the U.S. Board on Geographic
                            Names as the official repository of domestic geographic names data, the
                            official vehicle for geographic names use by all departments of the
                            Federal Government, and the source for applying geographic names to
                            Federal electronic and printed products.</othercit>
            <onlink>https://www.usgs.gov/us-board-on-geographic-names</onlink>
          </citeinfo>
        </srccite>
        <srcscale>24000</srcscale>
        <typesrc>digital data</typesrc>
        <srctime>
          <timeinfo>
            <rngdates>
              <begdate>2012</begdate>
              <enddate>2012</enddate>
            </rngdates>
          </timeinfo>
          <srccurr>publication date</srccurr>
        </srctime>
        <srccitea>Geographic Names</srccitea>
        <srccontr>Geographic feature names</srccontr>
      </srcinfo>
      <procstep>
        <procdesc>The data for this product are created as follows. All geospatial content
                    is taken from national geospatial databases under the stewardship of USGS data
                    programs. The vector data are processed using ESRI ArcGIS software.</procdesc>
        <procdate>2022</procdate>
      </procstep>
    </lineage>
  </dataqual>
  <spref>
    <horizsys>
      <geograph>
        <latres>0.00001</latres>
        <longres>0.00001</longres>
        <geogunit>Decimal degrees</geogunit>
      </geograph>
      <geodetic>
        <horizdn>North American Datum of 1983</horizdn>
        <ellips>Geodetic Reference System 80</ellips>
        <semiaxis>6378137</semiaxis>
        <denflat>298.2572221</denflat>
      </geodetic>
    </horizsys>
  </spref>
  <distinfo>
    <distrib>
      <cntinfo>
        <cntorgp>
          <cntorg>U.S. Geological Survey, National Geospatial Technical Operations
                        Center</cntorg>
        </cntorgp>
        <cntaddr>
          <addrtype>mailing and physical</addrtype>
          <address>1400 Independence Road</address>
          <city>Rolla</city>
          <state>MO</state>
          <postal>65401</postal>
        </cntaddr>
        <cntaddr>
          <addrtype>mailing and physical</addrtype>
          <address>Box 25046 Denver Federal Center</address>
          <city>Lakewood</city>
          <state>CO</state>
          <postal>80225</postal>
        </cntaddr>
        <cntvoice>1-888-ASK-USGS (1-888-275-8747)</cntvoice>
        <cntemail>tnm_help@usgs.gov</cntemail>
        <hours>Monday through Friday 8:00 AM to 4:00 PM Eastern Time Zone USA</hours>
        <cntinst>Metadata information can also be obtained through online services using The National Map Viewer, at https://nationalmap.usgs.gov or EarthExplorer, at https://earthexplorer.usgs.gov or Ask                               USGS at https://www.usgs.gov/ask.</cntinst>
      </cntinfo>
    </distrib>
    <resdesc>Downloadable Data</resdesc>
    <distliab>No liability for content or accuracy is presumed by USGS for data.</distliab>
    <stdorder>
      <digform>
        <digtinfo>
          <formname>FileGDB</formname>
          <formcont>ESRI File Geodatabase</formcont>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/MapIndices/GDB/</networkr>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <fees>None.</fees>
    </stdorder>
    <stdorder>
      <digform>
        <digtinfo>
          <formname>Shapefile</formname>
          <formcont>ESRI Shapefile</formcont>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/MapIndices/Shape/</networkr>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <fees>None.</fees>
    </stdorder>
    <stdorder>
      <digform>
        <digtinfo>
          <formname>Map Indices Map Server (ArcGIS)</formname>
          <formvern>10.81</formvern>
          <formspec>https://www.esri.com/en-us/arcgis/open-vision/initiatives/standards-specifications</formspec>
          <formcont>An ArcGIS Map Service for visualizing map index features.</formcont>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://carto.nationalmap.gov/arcgis/rest/services/map_indices/MapServer</networkr>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <fees>NONE</fees>
    </stdorder>
    <stdorder>
      <digform>
        <digtinfo>
          <formname>Map Indices Map Server (OGC WMS)</formname>
          <formvern>1.3.0</formvern>
          <formspec>https://www.ogc.org/standard/wms/</formspec>
          <formcont>An OGC WMS Map Service for visualizing map index features.</formcont>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://carto.nationalmap.gov/arcgis/services/geonames/MapServer/WMSServer?request=GetCapabilities&amp;service=WMS</networkr>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <fees>NONE</fees>
    </stdorder>
  </distinfo>
  <metainfo>
    <metd>20260225</metd>
    <metc>
      <cntinfo>
        <cntorgp>
          <cntorg>U.S. Geological Survey, National Geospatial Technical Operations
                        Center</cntorg>
        </cntorgp>
        <cntaddr>
          <addrtype>mailing and physical</addrtype>
          <address>1400 Independence Road</address>
          <city>Rolla</city>
          <state>MO</state>
          <postal>65401</postal>
        </cntaddr>
        <cntaddr>
          <addrtype>mailing and physical</addrtype>
          <address>Box 25046 Denver Federal Center</address>
          <city>Lakewood</city>
          <state>CO</state>
          <postal>80225</postal>
        </cntaddr>
        <cntvoice>1-888-ASK-USGS (1-888-275-8747)</cntvoice>
        <cntemail>tnm_help@usgs.gov</cntemail>
        <hours>Monday through Friday 8:00 AM to 4:00 PM Eastern Time Zone USA</hours>
        <cntinst>Metadata information can also be obtained through online services using The National Map Viewer, at https://nationalmap.usgs.gov or EarthExplorer, at https://earthexplorer.usgs.gov or Ask USGS at https://www.usgs.gov/ask.</cntinst>
      </cntinfo>
    </metc>
    <metstdn>FGDC Content Standard for Digital Geospatial Metadata</metstdn>
    <metstdv>FGDC-STD-001-1998</metstdv>
  </metainfo>
</metadata>
