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Metadata for US48STHU8X

Table of Contents 

Identification_Information
     Abstract 
     Purpose 
     Supplemental Information 
Data_Quality_Information
Spatial_Data_Organization_Information
Entity_and_Attribute_Information
     Detailed Description
     Overview 
Distribution_Information
Metadata_Reference_Section

Identification_Information 

Citation_Information 
    Originator: Dean Oman
    Publication_Date: 2001
    Title: State and 8 Digit Hydrologic Unit Boundaries for the Conterminous United States
    Geospatial_Data_Presentation_Format: Arc/Info
    Publication_Information
        Publication_Place: Washington, DC
        Publisher: NRCS
    Other_Citation_Details: NRI Map Room coverage
    Online_Linkage: ftp://ftp-fc.sc.egov.usda.gov/NHQ/pub/land/arc_export/us48sthu8x.e00.zip


Description  
    Abstract
    State and 8 digit hydrologic unit boundaries for the conterminous United States.
     
     
    Purpose
    This coverage is intended as a basemap for national level analysis.
     
     
Supplemental_Information
    Procedures_Used
    This coverage contains the 8 digit hydrologic unit boundaries for the
    conterminous United States.  The coverage was downloaded by Iowa State
    University from USGS (http://water.usgs.gov/lookup/getspatial?huc250k).
    ISU made the following corrections using paper maps as a source:
	Huc 14060001 exists as 2 polygons.  Southern polygon was relabeled correctly as 14060002.
	Huc 03100103 Charlotte Harbor was omitted.  ISU added.
	Huc 17100306 was ommited.  The huc 17100304 was cut off at the coast.
	The south huc should be 17100306 and the north huc should be 17100304.
    NRCS clipped the coverage to a shoreline created by the National
    Center for Resource Innovations (NCRI).  NCRI derived the
    shoreline from 1:2,000,000 scale USGS Digital Line Graph (DLG) files.
    This was joined with state boundaries using UNION. State boundaries
    where derived from a county coverage using RECLASS.  Islands were
    removed from this coverage to optimize its use for dot density maps.
     
     
    Revisions
    This coverage was last updated in 2001.
     
     
    Reviews_Applied_to_Data
    This coverage has received no formal review.
     
     
    Related_Spatial_and_Tabular_Data_Sets
    Other NRI Map Room basemap coverages include counties and Federal lands,
    derived from USGS coverages, and a Major Land Resource Areas (MLRA) coverage
    derived from the MLRA map in Agricultural Handbook 296.  These are intended to
    have the same shoreline and outer boundaries, although this has not been
    thoroughly verified.
     
     
    References_Cited
    NRCS National Headquarters Resources Inventory and Assessment Division.
     
    Notes
     
     
Time_Period_of_Content
    Currentness_Reference
    This coverage was last updated in 2001.
     
     
Status
    Progress: complete
    Maintenance_and_Update_Frequency
    as needed
     
     
Spatial_Domain
    Bounding_Coordinates
    West_Bounding_Coordinate: -127.82489728
    East_Bounding_Coordinate: -65.40241669
    North_Bounding_Coordinate: 48.15335521
    South_Bounding_Coordinate: 23.27546524


Keywords
    Theme
        Theme_Keyword_Thesaurus: None
        Theme_Keyword:  Hydrologic Units
    Place
        Place_Keyword_Thesaurus: None
        Place_Keyword:  conterminous United States
    Stratum
        Stratum_Keyword_Thesaurus: None
        Stratum_Keyword:
    Temporal
        Temporal_Keyword_Thesaurus: None
        Temporal_Keyword:


Access_Constraints
none
 
 
Use_Constraints
This coverage is designed for national, regional, and state level analysis.
It may not be appropriate for use at larger scales. This map does not meet National Map Accuracy Standards.
 
 
Point_of_Contact: See Distribution_Information for contact information.


Data_Set_Credit
USGS
Mark Rogers, ISU, mtrogers@iastate.edu
Dean Oman at dean.oman@wdc.usda.gov
the RIAD staff at nri@wdc.usda.gov
George Muehlbach, NCRI, made the shoreline.
 
Security_Information
    Security_Classification_System: None
    Security_Classification:  UNCLASSIFIED
    Security_Handling_Description: None


Native_Data_Set_Environment: SunOS UNIX, ARC/INFO version 7.2.1


Cross_Reference
    Originator: Dean Oman
    Publication_Date: 2001
    Publication_Time: 
    Title: State and 8 Digit Hydrologic Unit Boundaries for the Conterminous United States
    Edition: 
    Geospatial_Data_Presentation_Form: Arc/Info
    Series_Information
        Series_Name: 
        Issue_Identification: 
    Publication_Information
        Publication_Place: Washington, DC
        Publisher: NRCS
    Other_Citation_Details: NRI Map Room coverage
    Online_Linkage: ftp://ftp-fc.sc.egov.usda.gov/NHQ/pub/land/arc_export/us48sthu8x.e00.zip
    Larger_Work_Citation:

Data_Quality_Information

Attribute_Accuracy
    Attribute_Accuracy_Report: See Entity_Attribute_Information


    Quantitative_Attribute_Accuracy_Assessment
        Attribute_Accuracy_Value:  See Explanation
        Attribute_Accuracy_Explanation:
           Attribute accuracy is described, where present, with each
           attribute defined in the Entity and Attribute Section.


Logical_Consistency_Report: Polygon topology present.


Completeness_Report
complete
 
 
Positional_Accuracy 
    Horizontal_Positional_Accuracy
        Horizontal_Positional_Accuracy_Report:
         
         




    Vertical_Positional_Accuracy
        Vertical_Positional_Accuracy_Report:
         
         
Lineage: See Supplemental_Information for overview.


Process_Steps
    Process_Step
    Process_Description: DOMAN DISSOLVE USCROSS USST STFIPS POLY
    Source_Used_Citation_Abbreviation:None
    Process_Date:  19961223 
    Process_Time:   754
    Source_Produced_Citation_Abbreviation: None
    Process_Step
    Process_Description: DOMAN COPY USST     ../../PERMANENT/ST/USST
    Source_Used_Citation_Abbreviation:None
    Process_Date:  19970205 
    Process_Time:   722
    Source_Produced_Citation_Abbreviation: None
    Process_Step
    Process_Description: DOMAN COPY ../../PERMANENT/ST/USST USST
    Source_Used_Citation_Abbreviation:None
    Process_Date:  19970205 
    Process_Time:   846
    Source_Produced_Citation_Abbreviation: None
    Process_Step
    Process_Description: DOMAN COPY USST US48ST
    Source_Used_Citation_Abbreviation:None
    Process_Date:  19970205 
    Process_Time:   916
    Source_Produced_Citation_Abbreviation: None
    Process_Step
    Process_Description: DOMAN ARCEDIT /GIS/ARC/DEANO/DLG/US48ST
    Source_Used_Citation_Abbreviation:None
    Process_Date:  19970205 
    Process_Time:   924
    Source_Produced_Citation_Abbreviation: None
    Process_Step
    Process_Description: DOMAN COPY US48ST ../../PERMANENT/ST/US48ST
    Source_Used_Citation_Abbreviation:None
    Process_Date:  19970205 
    Process_Time:   932
    Source_Produced_Citation_Abbreviation: None
    Process_Step
    Process_Description: JVRANA ARCEDIT /GIS/ARC/PERMANENT/ST/US48ST
    Source_Used_Citation_Abbreviation:None
    Process_Date:  19970214 
    Process_Time:  1045
    Source_Produced_Citation_Abbreviation: None
    Process_Step
    Process_Description: GUEST EXPORT COVER /GIS/ARC/PERMANENT/ST/US48ST US48ST NONE
    Source_Used_Citation_Abbreviation:None
    Process_Date:  19970630 
    Process_Time:  1550
    Source_Produced_Citation_Abbreviation: None
    Process_Step
    Process_Description: JVRANA EXPORT COVER US48ST /TEMP2/JVRANA/US48ST.E00 NONE
    Source_Used_Citation_Abbreviation:None
    Process_Date:  19970922 
    Process_Time:   928
    Source_Produced_Citation_Abbreviation: None
    Process_Step
    Process_Description: DOMAN PROJECTCOPY COVER USST COVER US48ST
    Source_Used_Citation_Abbreviation:None
    Process_Date:  19971008 
    Process_Time:   745
    Source_Produced_Citation_Abbreviation: None
    Process_Step
    Process_Description: DOMAN COPY /GIS/ARC/PERMANENT/ST/US48ST US48ST
    Source_Used_Citation_Abbreviation:None
    Process_Date:  19971010 
    Process_Time:  1333
    Source_Produced_Citation_Abbreviation: None
    Process_Step
    Process_Description: DOMAN INTERSECT US48ST US48HU8 US48STHU8 POLY
    Source_Used_Citation_Abbreviation:None
    Process_Date:  19971010 
    Process_Time:  1413
    Source_Produced_Citation_Abbreviation: None
    Process_Step
    Process_Description: DOMAN RESELECT US48STHU8 US48STHU8X POLY SELSTHU8
    Source_Used_Citation_Abbreviation:None
    Process_Date:  19971014 
    Process_Time:   952
    Source_Produced_Citation_Abbreviation: None
    Process_Step
    Process_Description: DOMAN COPY US48STHU8X /GIS/ARC/PERMANENT/STHU8X/US48STHU8X
    Source_Used_Citation_Abbreviation:None
    Process_Date:  19971015 
    Process_Time:  1257
    Source_Produced_Citation_Abbreviation: None
    Process_Step
    Process_Description: KMUSSER EXPORT COVER US48STHU8X ~/US48STHU8X
    Source_Used_Citation_Abbreviation:None
    Process_Date:  19990719 
    Process_Time:   939
    Source_Produced_Citation_Abbreviation: None
    Process_Step
    Process_Description: KMUSSER   DOCUMENT US48STHU8X COPY   /GIS/ARC/PERMANENT/HU8/US48HU8 KMUSSER
    Source_Used_Citation_Abbreviation:None
    Process_Date:  19990719 
    Process_Time:  1017
    Source_Produced_Citation_Abbreviation: None
    Process_Step
    Process_Description: KMUSSER   DOCUMENT US48STHU8X UPDATE KMUSSER
    Source_Used_Citation_Abbreviation:None
    Process_Date:  19990719 
    Process_Time:  1049
    Source_Produced_Citation_Abbreviation: None
    Process_Step
    Process_Description: KMUSSER EXPORT COVER US48STHU8X US48STHU8X
    Source_Used_Citation_Abbreviation:None
    Process_Date:  20020107 
    Process_Time:  1517
    Source_Produced_Citation_Abbreviation: None
    Process_Step
    Process_Description: KMUSSER   DOCUMENT US48STHU8X DELETE KMUSSER
    Source_Used_Citation_Abbreviation:None
    Process_Date:  20020107 
    Process_Time:  1628
    Source_Produced_Citation_Abbreviation: None
    Process_Step
    Process_Description: KMUSSER   DOCUMENT US48STHU8X COPY   /GIS/ARC/PERMANENT/HU8/US48HU8 KMUSSER
    Source_Used_Citation_Abbreviation:None
    Process_Date:  20020107 
    Process_Time:  1629
    Source_Produced_Citation_Abbreviation: None
    Process_Step
    Process_Description: KMUSSER   DOCUMENT US48STHU8X UPDATE KMUSSER
    Source_Used_Citation_Abbreviation:None
    Process_Date:  20020107 
    Process_Time:  1649
    Source_Produced_Citation_Abbreviation: None
    Process_Step
    Process_Description: KMUSSER   DOCUMENT US48STHU8X UPDATE KMUSSER
    Source_Used_Citation_Abbreviation:None
    Process_Date:  20020107 
    Process_Time:  1654
    Source_Produced_Citation_Abbreviation: None


Cloud_Cover

Spatial_Data_Organization_Information

Direct_Spatial_Reference_Method: Vector


Point_and_Vector_Object_Information
    SDTS_Terms_Description
        SDTS_Point_and_Vector_Object_Type: Point
        Point_and_Vector_Object_Count: 2822
        SDTS_Point_and_Vector_Object_Type: String
        Point_and_Vector_Object_Count: 9851
        SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains'
        Point_and_Vector_Object_Count:  3157

Spatial_Reference_Information 

Horizontal_Coordinate_System_Definition 
    Planar
        Map_Projection:
        Map_Projection_Name:  ALBERS
        Longitude_of_Central_Meridian: -96
        Latitude_of_Projection_Origin: 23
        Latitude_of_First_Standard_Parallel: 29.5
        Latitude_of_Second_Standard_Parallel: 45.5
        False_Easting:  0.00000
        False_Northing:  0.00000
    Geodetic Model
        Horizontal_Datum_Name: North American Datum of 1927
        Ellipsoid_Name:  Clarke 1866
        Semi-major_Axis: 6,378,206.4
        Denominator_of_Flattening: 294.98

Entity_and_Attribute_Information 

Detailed_Description 
    Entity_Type
    Entity_Type_Label: US48STHU8X.PAT
    Entity_Type_Definition: 8 Digit Hydrologic Unit Codes
    Entity_Type_Definition_Source: USGS
    Attribute:
        Attribute_Label: -
        Attribute_Definition: 8 Digit Hydrologic Unit Codes
        Attribute_Definition_Source: USGS
        Attribute_Domain_Values
            Enumerated_Domain
                Enumerated_Domain_Value: -
                Enumerated_Domain_Value_Definition
                Enumerated_Domain_Value_Definition_Source:
    Attribute:
        Attribute_Label: AREA
        Attribute_Definition: Area of poly/region in square coverage units
        Attribute_Definition_Source: Computed
        Attribute_Domain_Values
            Enumerated_Domain
                Enumerated_Domain_Value: Positive real numbers
                Enumerated_Domain_Value_Definition
                Enumerated_Domain_Value_Definition_Source:
    Attribute:
        Attribute_Label: PERIMETER
        Attribute_Definition: Perimeter of poly/region in coverage units
        Attribute_Definition_Source: Computed
        Attribute_Domain_Values
            Enumerated_Domain
                Enumerated_Domain_Value: Positive real numbers
                Enumerated_Domain_Value_Definition
                Enumerated_Domain_Value_Definition_Source:
    Attribute:
        Attribute_Label: US48STHU8X#
        Attribute_Definition: Internal feature number
        Attribute_Definition_Source: Computed
        Attribute_Domain_Values
            Enumerated_Domain
                Enumerated_Domain_Value: Sequential unique positive integer
                Enumerated_Domain_Value_Definition
                Enumerated_Domain_Value_Definition_Source:
    Attribute:
        Attribute_Label: US48STHU8X-ID
        Attribute_Definition: User-assigned feature number
        Attribute_Definition_Source: User-defined
        Attribute_Domain_Values
            Enumerated_Domain
                Enumerated_Domain_Value: Integer
                Enumerated_Domain_Value_Definition
                Enumerated_Domain_Value_Definition_Source:
    Attribute:
        Attribute_Label: HU8
        Attribute_Definition: 8 Digit Hydrologic Unit Code
        Attribute_Definition_Source: USGS
        Attribute_Domain_Values
            Enumerated_Domain
                Enumerated_Domain_Value: 
                Enumerated_Domain_Value_Definition
                Enumerated_Domain_Value_Definition_Source:
    Attribute:
        Attribute_Label: HU6
        Attribute_Definition: 6 DIgit Hydrologic Unit Code
        Attribute_Definition_Source: USGS
        Attribute_Domain_Values
            Enumerated_Domain
                Enumerated_Domain_Value: 
                Enumerated_Domain_Value_Definition
                Enumerated_Domain_Value_Definition_Source:
    Attribute:
        Attribute_Label: NAME
        Attribute_Definition: Hydrologic Unit Name
        Attribute_Definition_Source: USGS
        Attribute_Domain_Values
            Enumerated_Domain
                Enumerated_Domain_Value: 
                Enumerated_Domain_Value_Definition
                Enumerated_Domain_Value_Definition_Source:


 Overview_Description 
    Entity_and_Attribute_Overview 
    Attributes include 8 digit and 6 digit hydrologic unit codes.
     
     
    Entity_and_Attribute_Detail_Citation: Not Available

Distribution_Information 



Metadata_Reference_Section
Metadata_Date: 19020107
Metadata_Contact:
 
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version:  19940608
Metadata_Time_Convention:  Local Time
Metadata_Security_Information:
    Metadata_Security_Classification_System:  None
    Metadata_Security_Classification:  UNCLASSIFIED
    Metadata_Security_Handling_Description:  None


Last modified: 02-01-07.16:54:41.Mon

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