Identification_Information: Citation: Citation_Information: Originator: Regional Ecosystem Office Publication_Date: 2002 Title: Hydrologic Unit Boundaries for Oregon, Washington, and California Geospatial_Data_Presentation_Form: vector digital data Publication_Information: Publication_Place: Portland, Oregon Publisher: Regional Ecosystem Office Online_Linkage: www.reo.gov Description: Abstract: This geospatial dataset is a hydrologic boundary layer containing nested hydrologic unit boundaries. The standard allows for mapping to the (16-digit) level. The dataset was developed by delineating the boundary lines on 1:24,000 base maps and digitizing the delineated lines. Digital Elevation Model data was used in part of the process to establish preliminary boundaries. This data set consists of geo-referenced digital map data and associated attributes. The hydrologic unit code attached to each delineated polygon is linked to the attribute data, which can contain information on area in acres, non-contributing area, state(s) the HU falls within, name for 7th and 8th level HU, 5th and 6th level code for downstream hydrologic unit, and hydrologic unit modifications. Each line has attributes that describe the HU level (1-8), originating source for that line and a metadata ID number that links the line to its associated metadata file. Purpose: The watershed and subwatershed hydrologic unit boundaries provide a uniquely identified and uniform method of subdividing large drainage areas. These smaller sized hydrologic units (up to 250,000 acres) are useful in many programs supported by the NRCS and others. This data set is intended as a tool for water-resource management and planning activities, particularly for site-specific and localized studies, which require the amount of detail provided by a large-scale map. Supplemental_Information: For additional information please refer to the following documents. ftp://ftp.or.blm.gov/gisweb/metadata/Data_Dict_Copy_from_Userguide.doc ftp://ftp.or.blm.gov/gisweb/metadata/HU_standards_061201.doc The following procedures were used to produce this data set:Hydrologic units were incorporated into this dataset from an aggregate of pre-existing HUs. Some new HU boundaries were delineated using flow lines and basins computed from 10- and 30-meter horizontal resolution Digital Elevation data based on flow derived from the elevation grid to determine potential pour points. The DEM data is derived from hypsography represented on 1:24000 USGS topographic quadrangles. Additional hydrography data was used as a template to control pourpoint locations for the delineated HUs. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2002 Time_of_Day: Unknown Currentness_Reference: Publication date Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -124.75 East_Bounding_Coordinate: -116.375 North_Bounding_Coordinate: 49 South_Bounding_Coordinate: 38 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: Hydrologic units Theme_Keyword: Watershed Boundaries Theme_Keyword: Subwatershed Boundaries Place: Place_Keyword_Thesaurus: Counties and County Equivalents of the United States and the District of Columbia (FIPS Pub 6-3) Place_Keyword: California Place_Keyword: Idaho Place_Keyword: Nevada Place_Keyword: Oregon Place_Keyword: Washington Access_Constraints: None Use_Constraints: The U.S. Department of Agriculture, Natural Resources Conservation Service, should be acknowledged as the data source in products derived from these data. These data should not be used at scales greater than 1:24,000. This is public information and may be interpreted by organizations, agencies, units of government, or others based on needs; however they are responsible for the appropriate application of the data. Federal, state, or local regulatory bodies are not to reassign to the Natural Resources Conservation Service any authority for the decisions they make. The Natural Resources Conservation Service will not perform any evaluations of these maps or purposes related solely to State or local regulatory programs. Photographic or digital enlargement of these maps to scales greater than that at which they were originally delineated can cause misrepresentation of the data. If enlarged, the maps will not include the fine detail that would be appropriate for mapping at the small scale. Digital data files are periodically updated. Files are dated, and users are responsible for obtaining the latest version of the data. Contacts: Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Regional Ecosystem Office Contact_Person: Dale Guenther Contact_Address: Address_Type: mailing address Address: P.O. Box 3623 City: Portland State_or_Province: OR Postal_Code: 97208-3263 Country: USA Contact_Voice_Telephone: 503-808-2188 Contact_Facsimile_Telephone: 503-808-2163 Native_Data_Set_Environment: Windows_NT, 4.0, Intel ARC/INFO version 7.1.2 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Polygon identifiers are manually checked with the original base map using the attribute file. Verification on polygon identification continuity on each side of a neatline is done visually on the screen as adjacent quad representations are assembled into larger area data layers. Logical_Consistency_Report: Certain node/geometry and topology (GT) polygon/chain relationships are collected or generated to satisfy topological requirements. (The GT-polygon corresponds to a hydrologic unit or a portion of a hydrologic unit at the edge of a Quadrangle sheet.) Some of these requirements include: chains must begin and end at nodes, left and right GT-polygons are defined for each chain element and are consistent throughout, and the chains representing the limits of the file (neatline) are free of gaps. The tests of logical consistency are performed using vendor software. The neatline is generated by connecting the explicitly entered four corners of the digital file. All data outside the enclosed region are ignored and all data crossing geographically straight lines are clipped at the neatline. Neatline straightening aligns the digitized edges of the digital data with the generated neatline (i.e., with the longitude/latitude lines in geographic coordinates). All internal polygons are tested for closure with vendor software and are checked on hard copy plots. All data are checked for common boundary lines (i.e., adjacent polygons with the same label). Quadrangles are edge matched within the Sub-basin area and edge locations generally do not deviate from centerline more than 0.01 inches. Completeness_Report: Data exists for Oregon, Washington , and parts of California. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The accuracy of these maps is generally based on the contour information or DEM data available for the base maps. Such data may be supplemented with site visits to locate ridge lines for hydrologic unit boundaries in flat terrain areas, changes in drainage patterns due to man's activities. The differences in positional accuracy between the hydrologic unit boundaries and their digitized map locations is unknown. Hydrologic unit boundaries generally were digitized within 0.01 inches of their locations on the digitizing source. The digital map elements are edge matched against the data for the adjacent Quadrangle. Edge match locations generally do not deviate from centerline to centerline by more than 0.01 inches. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: OR BLM Publication_Date: 19980731 Title: Digital Elevation Model Collection (30 meter) Oregon Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Time_of_Day: Unknown Source_Citation_Abbreviation: DEM30 Source_Contribution: Line reference Source_Information: Source_Citation: Citation_Information: Originator: OR BLM Publication_Date: 19980731 Title: Digital Elevation Model Collection (10 meter) Oregon Online_Linkage: http://earthexplorer.usgs.gov Source_Scale_Denominator: 24000 Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: Unknown Time_of_Day: Unknown Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: DEM10 Source_Contribution: Line reference Source_Information: Source_Citation: Citation_Information: Originator: USGS Publication_Date: Unknown Publication_Time: Unknown Title: Digital Line Graphs Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Time_of_Day: Unknown Source_Citation_Abbreviation: DLG Source_Contribution: Lines Process_Step: Process_Description: Hydrologic units redelineated Source_Used_Citation_Abbreviation: DEM30 Source_Used_Citation_Abbreviation: DEM10 Source_Used_Citation_Abbreviation: DLG Process_Date: 2002 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Titan Geospatial Contact_TDD/TTY_Telephone: 503-794-1344 Process_Step: Process_Description: Metadata imported. Cloud_Cover: 0 Spatial_Data_Organization_Information: Indirect_Spatial_Reference: Oregon, Washington, California, Idaho Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Complete chain Point_and_Vector_Object_Count: 2045395 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Label point Point_and_Vector_Object_Count: 6198 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains Point_and_Vector_Object_Count: 6198 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 1020 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Composite object Point_and_Vector_Object_Count: 3 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Composite object Point_and_Vector_Object_Count: 17 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Composite object Point_and_Vector_Object_Count: 25 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Composite object Point_and_Vector_Object_Count: 200 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Composite object Point_and_Vector_Object_Count: 1158 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Composite object Point_and_Vector_Object_Count: 5859 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Composite object Point_and_Vector_Object_Count: 435 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator 1927 Universal_Transverse_Mercator: UTM_Zone_Number: 10 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -123 Latitude_of_Projection_Origin: 0 False_Easting: 500000 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: Coordinate Pair Coordinate_Representation: Abscissa_Resolution: 0.61 Ordinate_Resolution: 0.61 Planar_Distance_Units: Meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1927 Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206 Denominator_of_Flattening_Ratio: 294.9786982 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: WATERSHED.PAT Entity_Type_Definition: Polygon attributes for the hydrologic units Entity_Type_Definition_Source: various Attribute: Attribute_Label: ACRES Attribute_Definition: Area of polygon in GIS acres Attribute_Definition_Source: Computed Attribute: Attribute_Label: BASIN Attribute_Definition: 3rd Field Hydrologic Unit Code Attribute_Definition_Source: Based on data from HUC_NUM item Attribute: Attribute_Label: BASIN_NAME Attribute_Definition: 3rd Field Hydrologic Unit Naming Protocol Attribute_Definition_Source: NRCS Attribute_Domain_Values: Unrepresentable_Domain: Whole numbers that are automatically generated. Attribute: Attribute_Label: CATCHMENT Attribute_Definition: 7th Field Hydrologic Unit Code Attribute_Definition_Source: Based on data from HUC_NUM item Attribute: Attribute_Label: CATCHMENT_NAME Attribute_Definition: 7th Field Hydrologic Unit Naming Protocol Attribute_Definition_Source: NRCS Attribute: Attribute_Label: COMMENT Attribute_Definition: Any additional information that pertains to the hydrologic unit's history or general characteristics that cannot be adequately described in previous items. Attribute_Definition_Source: Various Attribute: Attribute_Label: DS_HUC5 Attribute_Definition: Fifth Level Downstream HUC- This item represents the hydrologic unit code of the 5th level hydrologic unit receiving the majority of the downstream flow. Outlets created by ditching or other artificial drainage are not to be considered. Attribute_Definition_Source: NRCS Attribute: Attribute_Label: DS_HUC6 Attribute_Definition: Sixth Level Downstream Hydrologic Unit Code- This item represents the hydrologic unit code of the 6th level hydrologic unit receiving the majority of the downstream flow. Outlets created by ditching or other artificial drainage are not to be considered. Attribute_Definition_Source: NRCS Attribute: Attribute_Label: EIGHTH_FIELD Attribute_Definition: 2-digit identifier Attribute_Definition_Source: Based on data from HUC_NUM item Attribute: Attribute_Label: FIFTH_FIELD Attribute_Definition: 2-digit identifier Attribute_Definition_Source: Based on data from HUC_NUM item Attribute: Attribute_Label: FIRST_FIELD Attribute_Definition: 2-digit identifier Attribute_Definition_Source: Based on data from HUC_NUM item Attribute: Attribute_Label: FOURTH_FIELD Attribute_Definition: 2-digit identifier Attribute_Definition_Source: Based on data from HUC_NUM item Attribute: Attribute_Label: HUC_MOD Attribute_Definition: Hydrologic Unit Modifications- This item should contain information about hydrologic unit modifications to natural overland flow (that affect boundary) unique to the 5th or 6th field level unit delineated in an area of interest. This may include information on the type of structure, date of construction or other features that may influence surface water flow. In the attribute field, identify from most significant to least significant modification(s). Attribute_Definition_Source: NRCS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: SC Enumerated_Domain_Value_Definition: Stormwater Canal Enumerated_Domain: Enumerated_Domain_Value: BC Enumerated_Domain_Value_Definition: Barge Canal Enumerated_Domain: Enumerated_Domain_Value: PD Enumerated_Domain_Value_Definition: Pipe Diversion Enumerated_Domain: Enumerated_Domain_Value: KA Enumerated_Domain_Value_Definition: Karst Enumerated_Domain: Enumerated_Domain_Value: OC Enumerated_Domain_Value_Definition: Overflow Channel Enumerated_Domain: Enumerated_Domain_Value: ID Enumerated_Domain_Value_Definition: Irrigation Ditch Enumerated_Domain: Enumerated_Domain_Value: SD Enumerated_Domain_Value_Definition: Stormwater Ditch Enumerated_Domain: Enumerated_Domain_Value: CD Enumerated_Domain_Value_Definition: Channel Diversion Enumerated_Domain: Enumerated_Domain_Value: LE Enumerated_Domain_Value_Definition: Levee Enumerated_Domain: Enumerated_Domain_Value: OT Enumerated_Domain_Value_Definition: Other Enumerated_Domain: Enumerated_Domain_Value: IT Enumerated_Domain_Value_Definition: Interbasin Transfer Enumerated_Domain: Enumerated_Domain_Value: CB Enumerated_Domain_Value_Definition: Closed Basin Enumerated_Domain: Enumerated_Domain_Value: NC Enumerated_Domain_Value_Definition: Non-Contributing Enumerated_Domain: Enumerated_Domain_Value: NM Enumerated_Domain_Value_Definition: No Modifications Attribute: Attribute_Label: HUC_NUM Attribute_Definition: Hydrologic Unit Field Code- In order to identify an area, be it 1st through Nth Levels, each is assigned the combination of Levels which comprise it. Starting at the uppermost end of the drainage, the first 7th level hydrologic unit would be assigned the code 01 for the 13th and 14th digits. When combined with the 6th level code, the full Hydrologic Unit Code in the above example would be 17100203020901XX. Attribute: Attribute_Label: HUC_TYPE Attribute_Definition: Hydrologic Unit Types-This item allows users to query hydrologic units based on composition type. Information is presented as a running string where each individual character of the string represents the composition type of a particular unit (e.g.- character number 1 represents the composition type of a 1st level unit, character number 2 represents the composition type of a 2nd level unit, etc). Where a hydrologic unit level has not been delineated or the type has yet to be classified, an X will serve as a placeholder. This is an optional item that may be populated for 1st through 8th level units where deemed necessary. Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: T Enumerated_Domain_Value_Definition: True, pure, or "classic" hydrologic units are land areas having all the surface drainage within its boundary converging at a single point. Enumerated_Domain: Enumerated_Domain_Value: C Enumerated_Domain_Value_Definition: Composite hydrologic units, or remnant areas are drainage areas typically formed as the residual areas after delineation of classic watersheds. The most common example of a remnant area is the small triangular wedge between the boundaries of adjacent hydrologic units flowing into the same side of another stream. Enumerated_Domain: Enumerated_Domain_Value: F Enumerated_Domain_Value_Definition: Frontal hydrologic units are areas that include multiple, non-convergent rivers. Frontal units would most likely be related to hydrologic units feeding into the Pacific Ocean or Columbia River. Enumerated_Domain: Enumerated_Domain_Value: X Enumerated_Domain_Value_Definition: Unclassified hydrologic units Enumerated_Domain: Enumerated_Domain_Value: S Enumerated_Domain: Enumerated_Domain_Value: R Attribute: Attribute_Label: NCONTRIB_DA Attribute_Definition: Drainage areas that do not flow towards the outlet are considered non-contributing. Such areas may be due to glaciated plains (potholes), enclosed basins, karst topography, playas, cirques, depression lakes, dry lakebeds, or similar landforms. Attribute_Definition_Source: This item is based on the national interagency protocol. Attribute: Attribute_Label: OLD_HUCNUM Attribute_Definition: Historic Hydrologic Unit Number Attribute: Attribute_Label: REGION Attribute_Definition: 1st Field Hydrologic Unit Code Attribute_Definition_Source: Based on data from HUC_NUM item Attribute: Attribute_Label: REGION_NAME Attribute_Definition: 1st Field Hydrologic Unit Naming Protocol Attribute_Definition_Source: NRCS Attribute_Domain_Values: Unrepresentable_Domain: Whole numbers that are automatically generated. Attribute: Attribute_Label: SECOND_FIELD Attribute_Definition: 2-digit identifier Attribute_Definition_Source: Based on data from HUC_NUM item Attribute: Attribute_Label: SEVENTH_FIELD Attribute_Definition: 2-digit identifier Attribute_Definition_Source: Based on data from HUC_NUM item Attribute: Attribute_Label: SIXTH_FIELD Attribute_Definition: 2-digit identifier Attribute_Definition_Source: Based on data from HUC_NUM item Attribute: Attribute_Label: STATES Attribute_Definition: This item should include the names of all states that a hydrologic unit falls within. A 2-digit postal code abbreviation with a coma separating each state is used. Attribute_Definition_Source: NRCS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: OR Enumerated_Domain_Value_Definition: Oregon Enumerated_Domain: Enumerated_Domain_Value: CA Enumerated_Domain_Value_Definition: California Enumerated_Domain: Enumerated_Domain_Value: NV Enumerated_Domain_Value_Definition: Nevada Enumerated_Domain: Enumerated_Domain_Value: ID Enumerated_Domain_Value_Definition: Idaho Enumerated_Domain: Enumerated_Domain_Value: WA Enumerated_Domain_Value_Definition: Washington Attribute: Attribute_Label: SUBBASIN Attribute_Definition: 4th Field Hydrologic Unit Code Attribute_Definition_Source: Based on data from HUC_NUM item Attribute: Attribute_Label: SUBBASIN_NAME Attribute_Definition: 4th Field Hydrologic Unit Naming Protocol Attribute_Definition_Source: NRCS Attribute: Attribute_Label: SUBCATCH Attribute_Definition: 8th Field Hydrologic Unit Code Attribute_Definition_Source: Based on data from HUC_NUM item Attribute: Attribute_Label: SUBCATCH_NAME Attribute_Definition: 8th Field Hydrologic Unit Naming Protocol Attribute_Definition_Source: NRCS Attribute: Attribute_Label: SUBREGION Attribute_Definition: 2nd Field Hydrologic Unit Code Attribute_Definition_Source: Based on data from HUC_NUM item Attribute: Attribute_Label: SUBREGION_NAME Attribute_Definition: 2nd Field Hydrologic Unit Naming Protocol Attribute_Definition_Source: NRCS Attribute: Attribute_Label: SUBWAT Attribute_Definition: 6th Field Hydrologic Unit Code Attribute_Definition_Source: Based on data from HUC_NUM item Attribute: Attribute_Label: SUBWAT_NAME Attribute_Definition: 6th Field Hydrologic Unit Naming Protocol Attribute_Definition_Source: NRCS Attribute: Attribute_Label: THIRD_FIELD Attribute_Definition: 2-digit identifier Attribute_Definition_Source: Based on data from HUC_NUM item Attribute: Attribute_Label: WATERSHED Attribute_Definition: 5th Field Hydrologic Unit Code Attribute_Definition_Source: Based on data from HUC_NUM item Attribute: Attribute_Label: WATERSHED_NAME Attribute_Definition: 5th Field Hydrologic Unit Naming Protocol Attribute_Definition_Source: NRCS Detailed_Description: Entity_Type: Entity_Type_Label: WATERSHED.AAT Entity_Type_Definition: Arc attributes as it relates to the hydrologic units Entity_Type_Definition_Source: various Attribute: Attribute_Label: COMMENT Attribute_Definition: This item may include any additional information that pertains to the hydrologic units boundary line's history or general characteristics that cannot be adequately described in previous items. Attribute_Definition_Source: Various Attribute: Attribute_Label: HUC_LEVEL Attribute_Definition: This item is used to identify the hydrologic unit groupings a given line segment belongs to. Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1 Enumerated_Domain_Value_Definition: 1st Level Unit Boundary Enumerated_Domain: Enumerated_Domain_Value: 2 Enumerated_Domain_Value_Definition: 2nd Level Unit Boundary, NOT Shared with a 1st Level Unit Boundary Enumerated_Domain: Enumerated_Domain_Value: 3 Enumerated_Domain_Value_Definition: 3rd Level Unit Boundary, NOT Shared with 1st or 2nd Level Unit Boundary Enumerated_Domain: Enumerated_Domain_Value: 4 Enumerated_Domain_Value_Definition: 4th Level Unit Boundary, NOT Shared with 1st - 3rd Level Unit Boundary Enumerated_Domain: Enumerated_Domain_Value: 5 Enumerated_Domain_Value_Definition: 5th Level Unit Boundary, NOT Shared with 1st - 4th Level Unit Boundary Enumerated_Domain: Enumerated_Domain_Value: 6 Enumerated_Domain_Value_Definition: 6th Level Unit Boundary, NOT Shared with 1st - 5th Level Unit Boundary Enumerated_Domain: Enumerated_Domain_Value: 7 Enumerated_Domain_Value_Definition: 7th Level Unit Boundary, NOT Shared with 1st - 6th Level Unit Boundary Enumerated_Domain: Enumerated_Domain_Value: 8 Enumerated_Domain_Value_Definition: 8th Level Unit Boundary, NOT Shared with 1st - 7th Level Unit Boundary Attribute: Attribute_Label: LINEDATE Attribute_Definition: Date that the last line edit was performed. Attribute_Definition_Source: Various Attribute: Attribute_Label: LINEORG Attribute_Definition: The organization who performed the last spatial edit to a given line segment. Attribute: Attribute_Label: LINESOURCE Attribute_Definition: Information related to the original spatial data source from which the boundary line was derived. Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: DRG24 Enumerated_Domain_Value_Definition: USGS 1:24,000 Digital Raster Graphics (DRG) Enumerated_Domain: Enumerated_Domain_Value: TVC23 Enumerated_Domain_Value_Definition: USGS 1:24,000 Tagged Vector Contours (TVC) Enumerated_Domain: Enumerated_Domain_Value: DEM10 Enumerated_Domain_Value_Definition: Derived from 10 Meter Digital Elevation Model (Surface modeling) Enumerated_Domain: Enumerated_Domain_Value: DEM30 Enumerated_Domain_Value_Definition: Derived from 30 Meter Digital Elevation Model (Surface modeling) Enumerated_Domain: Enumerated_Domain_Value: DLG Enumerated_Domain_Value_Definition: USGS Digital Line Graph Enumerated_Domain: Enumerated_Domain_Value: UNK Enumerated_Domain_Value_Definition: Unknown Attribute: Attribute_Label: LINEVER Attribute_Definition: Line Edit Verification- Indicates which level in a series of quality control checks the hydrologic boundary has undergone prior to being accepted as part of the finalized dataset. * Only verification levels of 4 and 5 will be included in the regional dataset. Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1 Enumerated_Domain_Value_Definition: Initial Draft Line Enumerated_Domain: Enumerated_Domain_Value: 2 Enumerated_Domain_Value_Definition: Line accuracy certified by local hydrologist Enumerated_Domain: Enumerated_Domain_Value: 3 Enumerated_Domain_Value_Definition: Line accuracy certified by ALL local participating organizations Enumerated_Domain: Enumerated_Domain_Value: 4 Enumerated_Domain_Value_Definition: Line accuracy certified by Pacific Northwest stewards Enumerated_Domain: Enumerated_Domain_Value: 5 Enumerated_Domain_Value_Definition: Line accuracy certified by National stewards Attribute: Attribute_Label: METADATA_ID Attribute_Definition: Metadata ID is a code that identifies which metadata file applies to the arc. Detailed_Description: Entity_Type: Entity_Type_Label: reohucv1.pathuc1 Attribute: Attribute_Label: ACRES Attribute: Attribute_Label: 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: COMMENT Attribute: Attribute_Label: FID 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: FIRST_FIELD Attribute: Attribute_Label: HUC_MOD Attribute: Attribute_Label: HUC_NUM Attribute: Attribute_Label: HUC_TYPE Attribute: Attribute_Label: HUC1# 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: HUC1-ID Attribute_Definition: User-defined feature number. Attribute_Definition_Source: ESRI Attribute: Attribute_Label: NCONTRIB_DA Attribute: Attribute_Label: PERIMETER Attribute_Definition: Perimeter of feature in internal units. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: REGION Attribute: Attribute_Label: REGION_NAME Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: STATES Detailed_Description: Entity_Type: Entity_Type_Label: reohucv1.pathuc2 Attribute: Attribute_Label: ACRES Attribute: Attribute_Label: 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: COMMENT Attribute: Attribute_Label: FID 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: FIRST_FIELD Attribute: Attribute_Label: HUC_MOD Attribute: Attribute_Label: HUC_NUM Attribute: Attribute_Label: HUC_TYPE Attribute: Attribute_Label: HUC2# 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: HUC2-ID Attribute_Definition: User-defined feature number. Attribute_Definition_Source: ESRI Attribute: Attribute_Label: NCONTRIB_DA Attribute: Attribute_Label: PERIMETER Attribute_Definition: Perimeter of feature in internal units. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: REGION Attribute: Attribute_Label: REGION_NAME Attribute: Attribute_Label: SECOND_FIELD Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: STATES Attribute: Attribute_Label: SUBREGION Attribute: Attribute_Label: SUBREGION_NAME Detailed_Description: Entity_Type: Entity_Type_Label: reohucv1.pathuc3 Attribute: Attribute_Label: ACRES Attribute: Attribute_Label: 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: BASIN Attribute: Attribute_Label: BASIN_NAME Attribute: Attribute_Label: COMMENT Attribute: Attribute_Label: FID 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: FIRST_FIELD Attribute: Attribute_Label: HUC_MOD Attribute: Attribute_Label: HUC_NUM Attribute: Attribute_Label: HUC_TYPE Attribute: Attribute_Label: HUC3# 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: HUC3-ID Attribute_Definition: User-defined feature number. Attribute_Definition_Source: ESRI Attribute: Attribute_Label: NCONTRIB_DA Attribute: Attribute_Label: PERIMETER Attribute_Definition: Perimeter of feature in internal units. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: REGION Attribute: Attribute_Label: REGION_NAME Attribute: Attribute_Label: SECOND_FIELD Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: STATES Attribute: Attribute_Label: SUBREGION Attribute: Attribute_Label: SUBREGION_NAME Attribute: Attribute_Label: THIRD_FIELD Detailed_Description: Entity_Type: Entity_Type_Label: reohucv1.pathuc4 Attribute: Attribute_Label: ACRES Attribute: Attribute_Label: 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: BASIN Attribute: Attribute_Label: BASIN_NAME Attribute: Attribute_Label: COMMENT Attribute: Attribute_Label: FID 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: FIRST_FIELD Attribute: Attribute_Label: FOURTH_FIELD Attribute: Attribute_Label: HUC_MOD Attribute: Attribute_Label: HUC_NUM Attribute: Attribute_Label: HUC_TYPE Attribute: Attribute_Label: HUC4# 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: HUC4-ID Attribute_Definition: User-defined feature number. Attribute_Definition_Source: ESRI Attribute: Attribute_Label: NONCONTRIB_DA Attribute: Attribute_Label: PERIMETER Attribute_Definition: Perimeter of feature in internal units. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: REGION Attribute: Attribute_Label: REGION_NAME Attribute: Attribute_Label: SECOND_FIELD Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: STATES Attribute: Attribute_Label: SUBBASIN Attribute: Attribute_Label: SUBBASIN_NAME Attribute: Attribute_Label: SUBREGION Attribute: Attribute_Label: SUBREGION_NAME Attribute: Attribute_Label: THIRD_FIELD Detailed_Description: Entity_Type: Entity_Type_Label: reohucv1.pathuc5 Attribute: Attribute_Label: ACRES Attribute: Attribute_Label: 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: BASIN Attribute: Attribute_Label: BASIN_NAME Attribute: Attribute_Label: COMMENT Attribute: Attribute_Label: DS_HUC5 Attribute: Attribute_Label: FID 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: FIFTH_FIELD Attribute: Attribute_Label: FIRST_FIELD Attribute: Attribute_Label: FOURTH_FIELD Attribute: Attribute_Label: HUC_MOD Attribute: Attribute_Label: HUC_NUM Attribute: Attribute_Label: HUC_TYPE Attribute: Attribute_Label: HUC5# 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: HUC5-ID Attribute_Definition: User-defined feature number. Attribute_Definition_Source: ESRI Attribute: Attribute_Label: NCONTRIB_DA Attribute: Attribute_Label: PERIMETER Attribute_Definition: Perimeter of feature in internal units. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: REGION Attribute: Attribute_Label: REGION_NAME Attribute: Attribute_Label: SECOND_FIELD Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: STATES Attribute: Attribute_Label: SUBBASIN Attribute: Attribute_Label: SUBBASIN_NAME Attribute: Attribute_Label: SUBREGION Attribute: Attribute_Label: SUBREGION_NAME Attribute: Attribute_Label: THIRD_FIELD Attribute: Attribute_Label: WATERSHED Attribute: Attribute_Label: WATERSHED_NAME Detailed_Description: Entity_Type: Entity_Type_Label: reohucv1.pathuc6 Attribute: Attribute_Label: ACRES Attribute: Attribute_Label: 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: BASIN Attribute: Attribute_Label: BASIN_NAME Attribute: Attribute_Label: COMMENT Attribute: Attribute_Label: DS_HUC5 Attribute: Attribute_Label: DS_HUC6 Attribute: Attribute_Label: FID 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: FIFTH_FIELD Attribute: Attribute_Label: FIRST_FIELD Attribute: Attribute_Label: FOURTH_FIELD Attribute: Attribute_Label: HUC_MOD Attribute: Attribute_Label: HUC_NUM Attribute: Attribute_Label: HUC_TYPE Attribute: Attribute_Label: HUC6# 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: HUC6-ID Attribute_Definition: User-defined feature number. Attribute_Definition_Source: ESRI Attribute: Attribute_Label: NCONTRIB_DA Attribute: Attribute_Label: OLD_HUCNUM Attribute: Attribute_Label: PERIMETER Attribute_Definition: Perimeter of feature in internal units. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: REGION Attribute: Attribute_Label: REGION_NAME Attribute: Attribute_Label: SECOND_FIELD Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: SIXTH_FIELD Attribute: Attribute_Label: STATES Attribute: Attribute_Label: SUBBASIN Attribute: Attribute_Label: SUBBASIN_NAME Attribute: Attribute_Label: SUBREGION Attribute: Attribute_Label: SUBREGION_NAME Attribute: Attribute_Label: SUBWAT Attribute: Attribute_Label: SUBWAT_NAME Attribute: Attribute_Label: THIRD_FIELD Attribute: Attribute_Label: WATERSHED Attribute: Attribute_Label: WATERSHED_NAME Detailed_Description: Entity_Type: Entity_Type_Label: reohucv1.pathuc7 Attribute: Attribute_Label: ACRES Attribute: Attribute_Label: 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: BASIN Attribute: Attribute_Label: BASIN_NAME Attribute: Attribute_Label: CATCHMENT Attribute: Attribute_Label: CATCHMENT_NAME Attribute: Attribute_Label: COMMENT Attribute: Attribute_Label: DS_HUC5 Attribute: Attribute_Label: DS_HUC6 Attribute: Attribute_Label: FID 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: FIFTH_FIELD Attribute: Attribute_Label: FIRST_FIELD Attribute: Attribute_Label: FOURTH_FIELD Attribute: Attribute_Label: HUC_MOD Attribute: Attribute_Label: HUC_NUM Attribute: Attribute_Label: HUC_TYPE Attribute: Attribute_Label: HUC7# 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: HUC7-ID Attribute_Definition: User-defined feature number. Attribute_Definition_Source: ESRI Attribute: Attribute_Label: NCONTRIB_DA Attribute: Attribute_Label: OLD_HUCNUM Attribute: Attribute_Label: PERIMETER Attribute_Definition: Perimeter of feature in internal units. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: REGION Attribute: Attribute_Label: REGION_NAME Attribute: Attribute_Label: SECOND_FIELD Attribute: Attribute_Label: SEVENTH_FIELD Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: SIXTH_FIELD Attribute: Attribute_Label: STATES Attribute: Attribute_Label: SUBBASIN Attribute: Attribute_Label: SUBBASIN_NAME Attribute: Attribute_Label: SUBREGION Attribute: Attribute_Label: SUBREGION_NAME Attribute: Attribute_Label: SUBWAT Attribute: Attribute_Label: SUBWAT_NAME Attribute: Attribute_Label: THIRD_FIELD Attribute: Attribute_Label: WATERSHED Attribute: Attribute_Label: WATERSHED_NAME Overview_Description: Entity_and_Attribute_Overview: The hydrologic Unit Boundaries coverage contains attributes for polygons, arcs and seven Arc/Info regions. Hydrologic Unit delineations are closed polygons that encompass all area draining toward the lowest point (called pour point) in the polygon. Because of nominal sizes for the different hydrologic unit level: Watershed (40,000 to 250,000 acres) and Subwatershed (generally 10,000 to 40,000 acres), some polygons do not include all areas up to the drainage divide but all areas to one or more other upstream hydrologic units. A unique hydrologic unit code is used to identify each hydrologic unit. The hydrologic unit codes start with the 8-digit Sub-basin (sub-basin) number that contains the Watershed. Likewise the Subwatershed hydrologic unit codes start with the 10-digit Watershed number that contains the Subwatershed. Attributes associated with a hydrologic unit code includes: ACRES, HUC_NUM, HUC_TYPE, REGION_NAME, SUBREGION_NAME, BASIN_NAME, SUBBASIN_NAME, WATERSHED_NAME, SUBWAT_NAME, CATCHMENT_NAME, SUBCATCH_NAME, OLD_HUCNUM, STATES, NCONTRIB_DA, DS_HUC5, DS_HUC6, HUC_MOD, COMMENT, REGION, SUBREGION, BASIN, SUBBASIN, WATERSHED, SUBWAT, CATCHMENT, SUBCATCH, FIRST_FIELD, SECOND_FIELD, THIRD_FIELD, FOURTH_FIELD, FIFTH_FIELD, SIXTH_FIELD, SEVENTH_FIELD, EIGHTH_FIELD, HUC_LEVEL, LINESOURCE, LINEVER, LINEDATE, LINEORG, METADATA_ID, COMMENT Entity_and_Attribute_Detail_Citation: Pacific Northwest Regional Hydrologic Unit Boundary Database Attribute Standards "URL" Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: Regional Ecosystem Office Contact_Person: Dale Guenther Contact_Address: Address_Type: mailing address Address: P.O. Box 3623 City: Portland State_or_Province: OR Postal_Code: 97208-3263 Country: USA Contact_Voice_Telephone: 503-808-2188 Contact_Facsimile_Telephone: 503-808-2163 Resource_Description: Downloadable Data Distribution_Liability: Contact Distributor Standard_Order_Process: Fees: Contact Distributor Ordering_Instructions: Contact Distributor Turnaround: Contact Distributor Custom_Order_Process: Contact Distributor Metadata_Reference_Information: Metadata_Date: 20021127 Metadata_Review_Date: Metadata_Future_Review_Date: Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Dale Guenther Contact_Organization: Bureau of Land Management Contact_Address: Address_Type: mailing and physical address Address: Oregon State Office, 1515 S.W. Fifth Avenue City: Portland State_or_Province: OR Postal_Code: 97201 Country: USA Contact_Electronic_Mail_Address: dguenther@or.blm.gov Metadata_Standard_Name: Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile