Identification_Information:
  Citation:
    Citation_Information:
      Originator: Marilyn Flynn
      Publication_Date: Unpublished Material
      Title: Urban Areas, Southwestern United States
      Geospatial_Data_Presentation_Form: vector digital data
      Publication_Information:
      Other_Citation_Details: Original data set may be obtained from www.nationalatlas.gov
      Online_Linkage: http://www.nationalatlas.gov
  Description:
    Abstract:
      This data set contains urban areas. This data set is a subset of a national data set obtained from the National Atlas of the United States of America (nationalatlas.gov). The metadata for this data set is the original data set metadata; however, it was updated to reflect the changes that occured while creating this subset. This data set was used as part of U.S. Geological Survey Scientific Investigations Report 2006-5315, "Dissolved solids in basin-fill aquifers and streams in the Southwestern United States", by Anning and others (http://water.usgs.gov/nawqa/studies/mrb/salinity.html).

      The original data set includes a selection of urban areas in the United States
      derived from the urban areas layer of the Digital Chart of the World
      (DCW).  This is a revised version of the 1998 data set. Only minor
      corrections have been made.
    Purpose:
      These data are intended for geographic display and analysis at the
      national level, and for large regional areas.  The data should be
      displayed and analyzed at scales appropriate for 1:2,000,000-scale data.
      No responsibility is assumed by the U.S. Geological Survey in the use of
      these data.
  Time_Period_of_Content:
    Time_Period_Information:
      Single_Date/Time:
        Calendar_Date: 200101
    Currentness_Reference: publication date
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: None planned
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: 172
      East_Bounding_Coordinate: -66
      North_Bounding_Coordinate: 72
      South_Bounding_Coordinate: 18
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: None
      Theme_Keyword: urban areas
      Theme_Keyword: populated places
    Place:
      Place_Keyword: Arizona
      Place_Keyword: California
      Place_Keyword: Colorado
      Place_Keyword: Idaho
      Place_Keyword: Nevada
      Place_Keyword: New Mexico
      Place_Keyword: Oregon
      Place_Keyword: Utah
      Place_Keyword: Wyoming
  Access_Constraints: None
  Use_Constraints:
    None.  Acknowledgment of the National Atlas of the United States of America
    and (or) the U.S. Geological Survey would be appreciated in products
    derived from these data.
  Point_of_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey, Arizona Water Science Center
        Contact_Person: Marilyn Flynn
      Contact_Address:
        Address_Type: mailing and physical address
        Address: 2255 N. Gemini Drive
        City: Flagstaff
        State_or_Province: AZ
        Postal_Code: 86001
      Contact_Voice_Telephone: (928)556-7184
      Contact_Electronic_Mail_Address: meflynn@usgs.gov
  Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.2.1350
Data_Quality_Information:
  Logical_Consistency_Report:
    No additional checks for topological consistency were performed on
    this data set.
  Completeness_Report: This data set contains urban areas for the 50 United States.
  Lineage:
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: National Imagery and Mapping Agency (NIMA)
          Publication_Date: 1994
          Title: Digital Chart of the World
          Publication_Information:
            Publication_Place: Reston, VA
            Publisher: U.S. Geological Survey
      Type_of_Source_Media: CD-ROM
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1994
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: DCW
      Source_Contribution: spatial and attribute information
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: U.S. Geological Survey
          Publication_Date: 1998
          Title: State Boundaries of the United States
          Publication_Information:
            Publication_Place: Reston, Virginia
            Publisher: U.S. Geological Survey
      Source_Scale_Denominator: 2000000
      Type_of_Source_Media: online
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1998
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: ATLAS-STATE
      Source_Contribution: spatial information
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: U.S. Geological Survey
          Publication_Date: 1998
          Title: Cities and Towns of the United States
          Publication_Information:
            Publication_Place: Reston, Virginia
            Publisher: U.S. Geological Survey
      Source_Scale_Denominator: 2000000
      Type_of_Source_Media: online
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_of_Dates/Times:
            Beginning_Date: 1972
            Ending_Date: 1994
        Source_Currentness_Reference: ground condition
      Source_Citation_Abbreviation: ATLAS-CITIES98
      Source_Contribution: spatial and attribute information
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: U.S. Geological Survey
          Publication_Date: 1998
          Title: Hydrography Features of the United States
          Publication_Information:
            Publication_Place: Reston, Virginia
            Publisher: U.S. Geological Survey
      Source_Scale_Denominator: 2000000
      Type_of_Source_Media: online
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1998
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: ATLAS-HY
      Source_Contribution: spatial information
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: U.S. Geological Survey
          Publication_Date: 1998
          Title: Urban Areas of the United States
          Publication_Information:
            Publication_Place: Reston, Virginia
            Publisher: U.S. Geological Survey
      Source_Scale_Denominator: 2000000
      Type_of_Source_Media: online
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1998
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: ATLAS-URBAN98
      Source_Contribution: spatial information
    Process_Step:
      Process_Description:
        Urban polygons from the Digital Chart of the World (DCW) CD-ROM were
        extracted and converted to Arc/INFO format.  Where the urban boundaries
        extended beyond the shoreline of ATLAS-STATES, the shoreline was matched
        to the ATLAS-STATES shoreline.  Names of the urban areas were added
        using names in ATLAS-CITIES98. In large metropolitan areas many smaller
        areas were labeled as part of the metropolitan area.  The State in which
        the urban area is located was also added.  Several areas were modified
        to conform to the 1:2,000,000-scale hydrography (ATLAS-HY) layer.  Some
        smaller polygons that represent undeveloped areas within the urban area
        were removed and merged with the larger urban area.  Military
        reservations were also removed.  Finally, the attribute for State FIPS
        was added.
      Source_Used_Citation_Abbreviation: DCW
      Source_Used_Citation_Abbreviation: ATLAS-STATE
      Source_Used_Citation_Abbreviation: ATLAS-HY
      Source_Used_Citation_Abbreviation: ATLAS-CITIES98
      Process_Date: 1998
      Source_Produced_Citation_Abbreviation: ATLAS-URBAN98
    Process_Step:
      Process_Description: The spellings for San Francisco, CA and Bismarck, ND were corrected.
      Source_Used_Citation_Abbreviation: ATLAS-URBAN98
      Process_Date: 200101
    Process_Step:
      Process_Description: Data clipped to study area boundary.
      Process_Date: 20070102
      Process_Contact:
        Contact_Information:
          Contact_Person_Primary:
            Contact_Person: Marilyn Flynn
            Contact_Organization: U.S. Geological Survey, Arizona Water Science Center
          Contact_Address:
            Address_Type: mailing and physical address
            Address: 2255 N. Gemini Drive
            City: Flagstaff
            State_or_Province: AZ
            Postal_Code: 86001
          Contact_Voice_Telephone: (928)556-7184
          Contact_Electronic_Mail_Address: meflynn@usgs.gov
    Process_Step:
      Process_Description: Deleted unneeded attributes.
      Process_Date: 20071002
      Process_Contact:
        Contact_Information:
          Contact_Person_Primary:
            Contact_Person: Marilyn Flynn
            Contact_Organization: U.S. Geological Survey, Arizona Water Science Center
          Contact_Address:
            Address_Type: mailing and physical address
            Address: 2255 N. Gemini Drive
            City: Flagstaff
            State_or_Province: AZ
            Postal_Code: 86001
          Contact_Voice_Telephone: (928)556-7184
          Contact_Electronic_Mail_Address: meflynn@usgs.gov
Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Vector
  Point_and_Vector_Object_Information:
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: G-polygon
      Point_and_Vector_Object_Count: 310
Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Planar:
      Map_Projection:
        Map_Projection_Name: Albers Conical Equal Area
        Albers_Conical_Equal_Area:
          Standard_Parallel: 29.500000
          Standard_Parallel: 45.500000
          Longitude_of_Central_Meridian: -96.000000
          Latitude_of_Projection_Origin: 23.000000
          False_Easting: 0.000000
          False_Northing: 0.000000
      Planar_Coordinate_Information:
        Planar_Coordinate_Encoding_Method: coordinate pair
        Coordinate_Representation:
          Abscissa_Resolution: 0.004096
          Ordinate_Resolution: 0.004096
        Planar_Distance_Units: meters
    Geodetic_Model:
      Horizontal_Datum_Name: North American Datum of 1983
      Ellipsoid_Name: GRS1980
      Semi-major_Axis: 6378137.0
      Denominator_of_Flattening_Ratio: 298.257222
  Vertical_Coordinate_System_Definition:
    Altitude_System_Definition:
      Altitude_Resolution: 0.000010
      Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinates
Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: UrbanAreas
      Entity_Type_Definition: Urban areas are places where large populations exist.
      Entity_Type_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: State_fips
      Attribute_Definition:
        The 2-digit FIPS code of the State or State equivalent.  Where the
        urban area falls in more than one State, the codes are separated by
        dashes: 11-51-24.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Codeset_Domain:
          Codeset_Name:
            Codes for the Identification of the States, the District of
            Columbia and the Outlying Areas of the United States, and
            Associated Areas, FIPS 5-2.
          Codeset_Source:
            U.S. Department of Commerce, National Institute of Standards and
            Technology
    Attribute:
      Attribute_Label: Shape
      Attribute_Definition: The representation of the entity in the data.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Polygon
          Enumerated_Domain_Value_Definition: A 2-dimensional element.
          Enumerated_Domain_Value_Definition_Source: ESRI GIS software
    Attribute:
      Attribute_Label: URBANAP020
    Attribute:
      Attribute_Label: NAME
    Attribute:
      Attribute_Label: STATE
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
    Attribute:
      Attribute_Label: Shape_Length
      Attribute_Definition: Length of feature in internal units.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically generated.
    Attribute:
      Attribute_Label: STATE_FIPS
    Attribute:
      Attribute_Label: Urbanap020
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 2
          Range_Domain_Maximum: 6177
    Attribute:
      Attribute_Label: Name
      Attribute_Definition: The name of the urban area.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Unrepresentable_Domain:
          There is no predefined set of valid urban area names. Name represents
          the most significant place that is in the polygon.
    Attribute:
      Attribute_Label: State
      Attribute_Definition:
        The 2-character FIPS code of the State or State equivalent.  Where the
        urban area falls in more than one State, the codes are separated by
        dashes: DC-VA-MD.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Codeset_Domain:
          Codeset_Name:
            Codes for the Identification of the States, the District of
            Columbia and the Outlying Areas of the United States, and
            Associated Areas, FIPS 5-2.
          Codeset_Source:
            U.S. Department of Commerce, National Institute of Standards and
            Technology
    Attribute:
      Attribute_Label: Shape_Area
      Attribute_Definition: Area of feature in internal units squared.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically generated.
Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: Earth Science Information Center, U.S. Geological Survey
      Contact_Address:
        Address_Type: mailing address
        Address: 507 National Center
        City: Reston
        State_or_Province: VA
        Postal_Code: 20192
      Contact_Voice_Telephone: 1-888-ASK-USGS (1-888-275-8747)
      Contact_Voice_Telephone: 703-648-5920
      Contact_Instructions:
        In addition to the address above, there are other ESIC offices
        throughout the country.  A full list of these offices is at
        <http://mapping.usgs.gov/esic/esic_index.html>.
  Resource_Description: Original data set may be obtained from www.nationalatlas.gov
  Distribution_Liability:
    Although these data have been processed successfully on a computer system
    at the U.S. Geological Survey, no warranty expressed or implied is made by
    the U.S. Geological Survey regarding the utility of the data on any other
    system, nor shall the act of distribution constitute any  such warranty.
    No responsibility is assumed by the U.S. Geological Survey in the use of
    these data.
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: ESRI Shapefile
        Transfer_Size: 1.993
      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name: <http://nationalatlas.gov/atlasftp.html>
      Digital_Transfer_Option:
        Offline_Option:
          Offline_Media: CD-ROM
          Recording_Format: tar
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: SDTS
        Transfer_Size: 1.993
      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name: <http://nationalatlas.gov/atlasftp.html>
      Digital_Transfer_Option:
        Offline_Option:
          Offline_Media: CD-ROM
          Recording_Format: tar
    Fees:
      There is no charge for the online option.  For National Atlas files
      ordered on CD-ROM there is a base price of $45.00 per disc, a handling
      fee of $5.00, and a per-file charge based on file size.  The charge for
      files less than 10 megabytes in size is $1.00.  The charge for files that
      range in size from 10 to 150 megabytes is $7.50.  The charge for files
      of 150 megabytes or larger is $15.00.  The charge is $1.00 for the Urban
      Areas of the United States data set.
    Ordering_Instructions:
      To order files on CD-ROM, please see
      <http://nationalatlas.gov/atlasftp.html#q12>.
Metadata_Reference_Information:
  Metadata_Date: 20071004
  Metadata_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Gita Urban-Mathieux
        Contact_Organization: U.S. Geological Survey
      Contact_Address:
        Address_Type: mailing address
        Address: 521 National Center
        City: Reston
        State_or_Province: VA
        Postal_Code: 20192
      Contact_Voice_Telephone: 703-648-5175
      Contact_Electronic_Mail_Address: atlasmail@usgs.gov
  Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Time_Convention: local time
  Metadata_Security_Information:
    Metadata_Security_Classification_System: None
    Metadata_Security_Classification: Unclassified
    Metadata_Security_Handling_Description: None
  Metadata_Extensions:
    Online_Linkage: http://www.esri.com/metadata/esriprof80.html
    Profile_Name: ESRI Metadata Profile