Identification_Information:
  Citation:
    Citation_Information:
      Originator: Marilyn Flynn
      Publication_Date: Unpublished Material
      Title: Accounting Units, 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 accounting unit boundaries. 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 contains hydrologic unit boundaries and codes for the United
      States, Puerto Rico, and the U.S. Virgin Islands.  It was revised for inclusion in the National Atlas of the United States of America, and updated to match the streams file created by the USGS National Mapping Division (NMD) for the National Atlas of the United States of America. The original data set is a revised version of the January 2002 data set.
    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.
    Supplemental_Information:
      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
      Arc/INFO format, this metadata file may include some Arc/INFO-specific
      terminology.

      Hydrologic Unit Code (HUC) areas in this file do not necessarily match
      those published in Water-Supply Paper 2294 (Seaber et al).  The file has
      finer resolution than the maps used to determine areas published in the
      Water-Supply Paper.

      The Arc/INFO version of this file contains two additional annotation
      layers.  One layer is called anno.maplabel1, and contains the first six
      digits for each accounting unit.  The labels for Accounting Regions 1
      though 9 have a "0" in front of the number.  The second layer is called
      anno.catnum, and contains the last two digits for each cataloging unit.
      All numbers were checked manually against a 1:2,000,000-scale plot of the
      data.
  Time_Period_of_Content:
    Time_Period_Information:
      Single_Date/Time:
        Calendar_Date: 19981001
    Currentness_Reference: ground condition
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: None planned
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -121.969352
      East_Bounding_Coordinate: -104.476747
      North_Bounding_Coordinate: 43.929339
      South_Bounding_Coordinate: 29.772459
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: REQUIRED: Reference to a formally registered thesaurus or a similar authoritative source of theme keywords.
      Theme_Keyword: Hydrologic Subregions
    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_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
        Country: USA
      Contact_Voice_Telephone: (928)556-7184
      Contact_Electronic_Mail_Address: meflynn@usgs.gov
  Data_Set_Credit:
    Others who have helped with this data set and the metadata include Steve
    Denowski, Greg Allord, Curtis Price, Ken Lanfear and David Lorenz, in
    addition to other colleagues within the U.S. Geological Survey.
  Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.2.1350
  Cross_Reference:
    Citation_Information:
      Originator: U.S. Geological Survey
      Publication_Date: 1974-1987
      Title: State Hydrologic Unit Map (for each State)
      Geospatial_Data_Presentation_Form: Map
      Publication_Information:
        Publication_Place: Reston, VA
        Publisher: U.S. Geological Survey
      Online_Linkage: <http://water.usgs.gov/GIS/huc.html>
Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report:
      The arc attributes were manually checked by assigning unique line weights
      and colors to the values, and then plotting the data.  The plots were then
      compared to the source.

      The polygon attributes were checked by comparing a 1:2,000,000-scale plot
      to the source.  The attribute accuracy is estimated at 99%.
  Logical_Consistency_Report:
    Polygon and chain-node topology are present.  All polygons are labeled and
    were tested by using the Arc/INFO command labelerrors.  All polygons were
    checked for closure and intersections by using the Arc/INFO intersecterr
    command.  The file is clean.
  Completeness_Report:
    This file contains hydrologic unit boundaries and codes for all 50 States,
    Puerto Rico, and the U.S. Virgin Islands.  Boundaries and codes are included
    for regions, subregions, accounting units, and cataloging units.
  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report:
        The accuracy of the original data set was checked by comparing the
        digital files to several data sources.  First, both the line work and
        the polygon labels were checked against the source compilation.  No
        digitization errors were found during this phase.

        Next, the hydrologic unit boundaries were compared to the 1970
        1:2,000,000-scale DLG stream file and the 1:500,000-scale Hydrologic
        Unit Maps.  Plots containing both the streams and the hydrologic unit
        boundaries were made at a scale of 1:2,000,000.  Hydrologic unit
        boundary intersections were checked, as well as problem areas such as
        points where streams crossed hydrologic unit boundaries on the plot but
        not on the hydrologic unit map.  More than 400 errors were found.  All
        errors that could be corrected were corrected.  The remaining errors
        could not be corrected because the streams were in error rather than the
        hydrologic unit boundaries.

        Finally, the hydrologic unit boundaries were plotted at 1:2,000,000
        scale and compared to the NMD 1998 1:2,000,000-scale hydrologic data
        set.  Any discrepancies were addressed by reference to either the
        1:500,000-scale or the 1:100,000-scale maps.  The exceptions to this
        were the hydrologic unit boundaries for Alaska, Hawaii, Puerto Rico, and
        the U.S. Virgin Islands.  The Alaska boundaries were checked on a
        1:2,500,000-scale plot but not modified, because the boundaries cross
        glaciers, and it is difficult to distinguish flow from the glaciers.
        The Hawaii hydrologic unit boundaries were not reviewed because each
        island represents a cataloging unit.  The Puerto Rico and U.S. Virgin
        Islands boundaries were not plotted but were reviewed on-screen using a
        1:1,000,000 hydrologic data set created for the 1991 National Water
        Summary.

        The horizontal positional accuracy of the data matches the positional
        accuracy of the original compilation.
  Lineage:
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: U.S. Geological Survey
          Publication_Date: 1974-1987
          Title: State Hydrologic Unit Maps (for each State)
          Geospatial_Data_Presentation_Form: Map
          Publication_Information:
            Publication_Place: Reston, VA
            Publisher: U.S. Geological Survey, Office of Water Data Coordination
          Online_Linkage: <http://water.usgs.gov/GIS/huc.html>
      Source_Scale_Denominator: 500,000
      Type_of_Source_Media: Mylar separate
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_of_Dates/Times:
            Beginning_Date: 1974
            Ending_Date: 1987
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: HUCmaps
      Source_Contribution: Linework for the data set.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Seaber, Paul R.
          Originator: Kapinos, F. Paul
          Originator: Knapp, George L.
          Publication_Date: 1987
          Title: Hydrologic Unit Maps
          Series_Information:
            Series_Name: Water-Supply Paper
            Issue_Identification: 2294
          Publication_Information:
            Publication_Place: Reston, VA
            Publisher: U.S. Geological Survey
          Online_Linkage: <http://water.usgs.gov/GIS/huc.html>
      Type_of_Source_Media: Paper map
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1987
        Source_Currentness_Reference: Publication date
      Source_Citation_Abbreviation: Seaber
      Source_Contribution: Cataloging unit names for all States except Alaska.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: U.S. Geological Survey
          Publication_Date: 1987
          Title: Alaska State Hydrologic Unit Map
          Geospatial_Data_Presentation_Form: Map
          Publication_Information:
            Publication_Place: Reston, VA
            Publisher: U.S. Geological Survey
          Online_Linkage: <http://water.usgs.gov/GIS/huc.html>
      Source_Scale_Denominator: 2,500,000
      Type_of_Source_Media: Mylar separate
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1987
        Source_Currentness_Reference: Publication date
      Source_Citation_Abbreviation: HUCAKmap
      Source_Contribution:
        The source contributed line work and names for hydrologic units in
        Alaska.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: U.S. Geological Survey
          Publication_Date: 1972-1980
          Title: 1:2,000,000 DLG Hydrography
          Publication_Information:
            Publication_Place: Reston, VA
            Publisher: U.S. Geological Survey
      Source_Scale_Denominator: 2,000,000
      Type_of_Source_Media: Digital file
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_of_Dates/Times:
            Beginning_Date: 1972
            Ending_Date: 1980
        Source_Currentness_Reference: Publication date
      Source_Citation_Abbreviation: DLGHY
      Source_Contribution: Location of streams for accuracy testing.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: U.S. Geological Survey
          Publication_Date: 1986
          Title: Hydrologic Unit Codes map
          Edition: Version 1.0
          Geospatial_Data_Presentation_Form: Map
          Publication_Information:
            Publication_Place: Reston, VA
            Publisher: U.S. Geological Survey
      Source_Scale_Denominator: 2,000,000
      Type_of_Source_Media: Digital file
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1986
        Source_Currentness_Reference: Publication date
      Source_Citation_Abbreviation: HUCS10
      Source_Contribution: Intermediate digital file.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: U.S. Geological Survey
          Publication_Date: 1992
          Title: Hydrologic Unit Codes map
          Edition: Version 1.1
          Geospatial_Data_Presentation_Form: Map
          Publication_Information:
            Publication_Place: Reston, VA
            Publisher: U.S. Geological Survey
      Source_Scale_Denominator: 2,000,000
      Type_of_Source_Media: Digital file
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1992
        Source_Currentness_Reference: Publication date
      Source_Citation_Abbreviation: HUCS11
      Source_Contribution: Intermediate digital file.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: U.S. Geological Survey
          Publication_Date: 1994
          Title: Hydrologic Unit Codes map
          Edition: Version 1.1.1
          Geospatial_Data_Presentation_Form: Map
          Publication_Information:
            Publication_Place: Reston, VA
            Publisher: U.S. Geological Survey
      Source_Scale_Denominator: 2,000,000
      Type_of_Source_Media: Digital file
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1994
        Source_Currentness_Reference: Publication date
      Source_Citation_Abbreviation: HUCS111
      Source_Contribution: Intermediate digital file.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: U.S. Geological Survey
          Publication_Date: 1989
          Title: 1:2,000,000 County Boundaries
          Geospatial_Data_Presentation_Form: Map
          Publication_Information:
            Publication_Place: Reston, VA
            Publisher: U.S. Geological Survey
      Source_Scale_Denominator: 2,000,000
      Type_of_Source_Media: Digital file
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1989
        Source_Currentness_Reference: Publication date
      Source_Citation_Abbreviation: DLGCO
      Source_Contribution:
        Determination of boundaries for identification of offshore and onshore
        areas.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: U.S. Environmental Protection Agency
          Publication_Date: 1975
          Title: Reach File Version 1.0 Alpha
          Geospatial_Data_Presentation_Form: Map
          Publication_Information:
            Publication_Place: Washington, DC
            Publisher: U.S. Environmental Protection Agency
      Type_of_Source_Media: Digital file
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1975
        Source_Currentness_Reference: Publication date
      Source_Citation_Abbreviation: RF1
      Source_Contribution: Information on flow between cataloging units.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: U.S. Geological Survey
          Publication_Date: 1998
          Title: State Boundaries of the United States
          Geospatial_Data_Presentation_Form: Map
          Publication_Information:
            Publication_Place: Reston, VA
            Publisher: U.S. Geological Survey
      Source_Scale_Denominator: 2,000,000
      Type_of_Source_Media: Digital file
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_of_Dates/Times:
            Beginning_Date: 1972
            Ending_Date: 1998
        Source_Currentness_Reference: Ground condition
      Source_Citation_Abbreviation: NAStates
      Source_Contribution: Coastline information
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: U.S. Geological Survey
          Publication_Date: 1998
          Title: Hydrography Features of the United States (linear)
          Geospatial_Data_Presentation_Form: Map
          Publication_Information:
            Publication_Place: Reston, VA
            Publisher: U.S. Geological Survey
      Source_Scale_Denominator: 2,000,000
      Type_of_Source_Media: Digital file
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_of_Dates/Times:
            Beginning_Date: 1985
            Ending_Date: 1998
        Source_Currentness_Reference: Ground condition
      Source_Citation_Abbreviation: NAHydro
      Source_Contribution: Coastline information
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: U.S. Geological Survey
          Publication_Date: 19990401
          Title: 1:2,000,000-Scale Hydrologic Unit Boundaries
          Edition: Version 2.0
          Geospatial_Data_Presentation_Form: Map
          Publication_Information:
            Publication_Place: Reston, VA
            Publisher: U.S. Geological Survey
      Source_Scale_Denominator: 2,000,000
      Type_of_Source_Media: Digital file
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 19981001
        Source_Currentness_Reference: Ground condition
      Source_Citation_Abbreviation: HUCS20
      Source_Contribution: Spatial and attribute information.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: U.S. Geological Survey
          Publication_Date: 200104
          Title: 1:2,000,000-Scale Hydrologic Unit Boundaries
          Edition: Version 2.1
          Geospatial_Data_Presentation_Form: Map
          Publication_Information:
            Publication_Place: Reston, VA
            Publisher: U.S. Geological Survey
      Source_Scale_Denominator: 2,000,000
      Type_of_Source_Media: Digital file
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 19981001
        Source_Currentness_Reference: Ground condition
      Source_Citation_Abbreviation: HUCS21
      Source_Contribution: Spatial and attribute information.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: U.S. Geological Survey
          Publication_Date: 200201
          Title: 1:2,000,000-Scale Hydrologic Unit Boundaries
          Edition: Version 2.2
          Geospatial_Data_Presentation_Form: Map
          Publication_Information:
            Publication_Place: Reston, VA
            Publisher: U.S. Geological Survey
      Source_Scale_Denominator: 2,000,000
      Type_of_Source_Media: Digital file
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 19981001
        Source_Currentness_Reference: Ground condition
      Source_Citation_Abbreviation: HUCS22
      Source_Contribution: Spatial and attribute information.
    Process_Step:
      Process_Description:
        The original hydrologic unit boundaries file (HUCS10) was created
        through the following steps:

        >a) 1:2,000,000-scale stable-base map plots of drainage (streams) and
        >the latitude/longitude grid were obtained from the USGS National
        >Mapping Division (NMD).  These plots were in the Lambert Conformal
        >Conic projection, and used 1:500,000-scale State base map projection
        >parameters.  Fifteen sections were plotted using 1970 National Atlas
        >1:2,000,000-scale sectional boundaries.
        >
        >b) Individual State 1:500,000-scale hydrologic unit maps in the Lambert
        >Conformal Conic projection were photoreduced to 1:2,000,000.
        >
        >c) Hydrologic unit boundaries were compiled and the edges were matched
        >on scale-stable 1:2,000,000 plots.  The boundaries were combined with
        >the streams plots for digitizing.
        >
        >d) The hydrologic unit boundaries were digitized by Automated Datatron,
        >Hyattesville, MD., which digitizes materials on contract for NMD.
        >
        >e) Digital data from Automated Datatron was converted to an Arc/INFO
        >coverage, then checked and corrected.
        >
        >f) A detailed, annotated list was compiled, listing locations where
        >hydrologic unit boundaries and streams were coincident, or where
        >1:2,000,000-scale DLG streams were in error.  Wherever possible,
        >conflicts and errors were resolved.
      Source_Used_Citation_Abbreviation: HUCmaps
      Source_Used_Citation_Abbreviation: DLGHY
      Process_Date: 1985-1992
      Source_Produced_Citation_Abbreviation: HUCS10
    Process_Step:
      Process_Description:
        HUCS11 was created by modifying and correcting the HUCS10 file in
        Arc/INFO, and combining it with a 1:2,000,000-scale U.S. counties file
        to identify onshore and offshore areas.  Other county attributes were
        excluded.  This process was done in Arc/INFO, and used a fuzzy tolerance
        of 2 meters.  A small part of the original map, which laid on top of
        part of the Canadian Great Lakes, was deleted.  The attributes were
        renamed and expanded.
      Source_Used_Citation_Abbreviation: HUCS10
      Source_Used_Citation_Abbreviation: DLGCO
      Process_Date: 1992
      Source_Produced_Citation_Abbreviation: HUCS11
    Process_Step:
      Process_Description:
        A HUCs_2M.TRACE file was created from the River Reach 1 (rf1) coverage,
        which includes a pointer to the next downstream segment of each reach.
        The resulting file was added to INFO, along with an index created using
        the INDEX_HUC.AML.  These files are included in HUCS111 only and are not
        in the distributed version of the Hydrologic Unit Boundaries data set.
      Source_Used_Citation_Abbreviation: HUCS11
      Source_Used_Citation_Abbreviation: RF1
      Process_Date: 1994
      Source_Produced_Citation_Abbreviation: HUCS111
    Process_Step:
      Process_Description:
        Using Arc/INFO, HUCS111 was compared with the most recent 1:2,000,000-
        scale streams file created by the USGS National Mapping Division (NMD)
        for inclusion in the National Atlas of the United States of America.
        Where a stream crossed a hydrologic unit boundary, the boundary was
        compared to the 1:500,000-scale State hydrologic unit map (Seaber).  If
        a stream and hydrologic unit boundary intersection could not be resolved
        by this comparison, the USGS 1:100,000-scale topographic quadrangles
        were used.  All corrected hydrologic unit boundaries were given a value
        of 5 for the Error_type attribute.  The boundaries were changed by
        moving vertices to include the stream in the appropriate hydrologic
        unit.  All editing was done on-screen.  This step happened May 22, 1998
        and November 10, 1998.

        The Region, Subregion, Accounting unit, and Cataloging unit names from
        Seaber were added to the data set and spot-checked.  Cataloging unit
        names for Alaska were added from the Alaska Hydrologic Unit Map
        (HUCAKmap).

        Values for BNDTYPE were determined from the bounding polygons using
        INDEX_HUC.AML.  The attributes Error_type, Reg_name, Map_label,
        Cat_Name, and Cat_num were added to the file.

        Two annotation layers were also added to the coverage.  One layer is
        called anno.maplabel1, which shows the first six digits for each
        accounting unit.  The labels for accounting Regions 1 though 9 have the
        "0" in front of the number.  The second annotation layer is anno.catnum,
        and this layer has the last 2 digit codes for each cataloging unit.  All
        numbers were checked manually on a 1:2,000,000-scale plot of the data
        set.  The cataloging unit names were spot-checked.  The file was
        modified to agree with the official National Atlas coastline (NAStates)

        The Arc/INFO coverage was exported to create the shapefiles and SDTS
        files.
      Source_Used_Citation_Abbreviation: HUCS111
      Source_Used_Citation_Abbreviation: Seaber
      Source_Used_Citation_Abbreviation: HUCAKmap
      Source_Used_Citation_Abbreviation: NAStates
      Source_Used_Citation_Abbreviation: NAHydro
      Process_Date: 1998
      Source_Produced_Citation_Abbreviation: HUCS20
    Process_Step:
      Process_Description:
        The HUCS20 file was modified and corrected in Arc/INFO.  Two Hydrologic
        unit codes were corrected.  The first error was in western Illinois,
        Region 07, Subregion 08, Accounting unit 01, where cataloging unit 04
        was incorrectly tagged 07.  The second error was in northeastern
        Missouri, Region 07, Subregion 11, Accounting unit 00, Cataloging unit
        01, where the subregion was incorrectly tagged 10.

        Misspelled names in sub_name, acc_name, and cat_name were corrected.
        The file was exported to create new shapefiles and SDTS files.
      Source_Used_Citation_Abbreviation: HUCS20
      Process_Date: 2001
      Source_Produced_Citation_Abbreviation: HUCS21
    Process_Step:
      Process_Description:
        The HUCS21 file was modified and corrected in ArcGIS.  One Hydrologic
        Unit code was corrected in Oregon.  Region 17, Subregion 07, Accounting
        unit 03, Cataloging unit 01 had all user-defined attribute items
        incorrectly valued as Region 17, Subregion 09, Accounting unit 00,
        Cataloging unit 05.
      Source_Used_Citation_Abbreviation: HUCS21
      Process_Date: 200201
      Source_Produced_Citation_Abbreviation: HUCS22
    Process_Step:
      Process_Description:
        The HUCS22 file was modified and corrected in ArcGIS.  One Cataloging
        unit name was corrected in Oregon.  Region 17, Subregion 10, Accounting
        unit 02, Cataloging unit 03 had the attribute CAT_NAME incorrectly
        valued as Wilson-Trusk-Nestuccu, Oregon. It was corrected to
        Wilson-Trask-Nestucca, Oregon.
      Source_Used_Citation_Abbreviation: HUCS22
      Process_Date: 200211
    Process_Step:
      Process_Description: Data clipped to study area boundary.
    Process_Step:
      Process_Description: Deleted unneeded attributes. Renamed Huc6 to HUC6 and Acc_name to Name.
      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: Arizona
            Postal_Code: 86001
            Country: USA
          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: 47
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: Label point
      Point_and_Vector_Object_Count: 28
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
      Point_and_Vector_Object_Count: 28
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: Point
      Point_and_Vector_Object_Count: 4
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: Geodetic Reference System 80
      Semi-major_Axis: 6378137.000000
      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: AcctUnits
      Entity_Type_Definition:
        A subdivision of the Earth, used for the collection and organization of
        hydrologic data.  Regions, subregions, accounting units, and cataloging
        units are all types of hydrologic units.
      Entity_Type_Definition_Source: U.S. Geological Survey
    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: 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.
    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
      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.000
          Range_Domain_Maximum: 9.069
    Attribute:
      Attribute_Label: HUC6
      Attribute_Definition: The number of the Accounting Unit.
      Attribute_Definition_Source: National Atlas of the United States.
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 130100
          Range_Domain_Maximum: 181002
    Attribute:
      Attribute_Label: Name
      Attribute_Definition: The Accounting Unit name.
      Attribute_Definition_Source: National Atlas of the United States
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
        Country: USA
      Contact_Voice_Telephone: 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://ask.usgs.gov/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.
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: ARCE
        Transfer_Size: 0.330
      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name: <http://nationalatlas.gov/atlasftp.html>
        Offline_Option:
          Offline_Media: CD-ROM
          Recording_Format: tar
Metadata_Reference_Information:
  Metadata_Date: 20071004
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
        Contact_Person: none
      Contact_Position: CAPP Chief
      Contact_Address:
        Address_Type: Mailing and physical address
        Address: 505 Science Dr.
        City: Madison
        State_or_Province: WI
        Postal_Code: 53711-1061
        Country: USA
      Contact_Voice_Telephone: 608-238-9333
      Contact_Facsimile_Telephone: 608-238-9334
      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
  Metadata_Extensions:
    Online_Linkage: http://www.esri.com/metadata/esriprof80.html
    Profile_Name: ESRI Metadata Profile