ds402_wbdhuc12

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Oklahoma Natural Resources Conservation Service State Office

Publication_Date: 2005

Publication_Time: Unknown

Title: ds402_wbdhuc12

Edition: 1

Geospatial_Data_Presentation_Form: vector digital data

Publication_Information:

Publication_Place: Stillwater, Oklahoma

Publisher: Natural Resources Conservation Service

Online_Linkage: <http://www.ncgc.nrcs.usda.gov/products/datasets/watershed/>

Description:

Abstract:

This dataset is a complete digital hydrologic unit boundary layer to the Subwatershed (12-digit) 6th level for the State of Oklahoma. This dataset consists of geo-referenced digital data and associated attributes created in accordance with the FGDC Proposal, Version 1.0 - Federal Standards for Delineation of Hydrologic Unit Boundaries 3/01/02 (<http://www.ftw.nrcs.usda.gov/huc_data.html>). Polygons are attributed with hydrologic unit codes for 4th level subbasins, 5th level watersheds, 6th level subwatersheds, name, size, downstream hydrologic unit, type of watershed, non-contributing areas and flow modification. Arcs are attributed with the highest hydrologic unit code for each watershed, line source and a metadata reference file.

Purpose:

The watershed and subwatershed hydrologic unit boundaries provide a uniquely identified and uniform method of subdividing large drainage areas. The smaller sized 6th level subwatersheds (up to 40,000 acres) are useful for numerous application programs supported by a variety of local, State, and Federal agencies. This dataset is intended to be used as a tool for water-resource management and planning activities, particularly for site-specific and localized studies requiring a level of detail provided by large-scale map information. The dataset will be appended to a larger seamless nationally consistant geospatial database as the watershed boundary dataset is completed by other states.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 20050930

Currentness_Reference: Publication date of sources

Status:

Progress: Complete

Maintenance_and_Update_Frequency: Unknown

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -98.107013

East_Bounding_Coordinate: -95.069067

North_Bounding_Coordinate: 36.461778

South_Bounding_Coordinate: 34.678163

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: HUC

Theme_Keyword: Hydrologic Units

Theme_Keyword: Hydrologic Unit Code

Theme_Keyword: Region

Theme_Keyword: Subregion

Theme_Keyword: Basin

Theme_Keyword: Subbasin

Theme_Keyword: Watershed

Theme_Keyword: Watershed Boundaries

Theme_Keyword: Boundaries

Theme_Keyword: Subwatershed

Theme_Keyword: WBD

Theme_Keyword: Watershed Boundary Dataset

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: Oklahoma

Place_Keyword: USA

Access_Constraints: None

Use_Constraints:

The distributor shall not be held liable for improper or incorrect use of these data, based on the description of appropriate/inappropriate uses described in this metadata document. It is strongly recommended that these data are directly acquired from the distributor and not indirectly through other sources that may have changed the data in some way. These data should not be used at scales greater than 1:24,000 for the purpose of identifying hydrographic watershed boundary feature locations in Oklahoma. The Natural Resources Conservation Service (NRCS) should be acknowledged as the data source in products derived from these data. The Oklahoma Watershed Boundary Dataset is public information and may be interpreted by all organizations, agencies, units of government, or others based on needs; however, the users are responsible for the appropriate application of the data. Federal, State, or local regulatory agencies are not to reassign to the NRCS any authority for the decisions they make. The NRCS 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 these maps were originally delineated can result in 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 from the source distributor.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Oklahoma Natural Resources Conservation Service

Contact_Person: James E. Henley

Contact_Address:

Address_Type: mailing address

Address: 100 USDA Ste. 106

City: Stillwater

State_or_Province: Oklahoma

Postal_Code: 74074

Contact_Voice_Telephone: 405-742-1114

Contact_Electronic_Mail_Address: James.Henley@ok.usda.gov

Contact_Instructions: Please email questions and requests.

Data_Set_Credit:

Funding for the Oklahoma Watershed Boundary Dataset (WBD) was provided by the NRCSN. The United States Forest Service provided assistance delineating watersheds and subwatersheds in the Ouchita National Forest. The U.S. Geological Survey, Oklahoma Water Science Center provided assistance delineating watersheds and subwatersheds in the 1112 subregion.

Native_Data_Set_Environment:

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.2.1350

Data_Quality_Information:

Logical_Consistency_Report:

There are no unclosed polygons, intersections without nodes, or polygons without labels or with more than one label. ArcMap topological editing tools were used to correct intersections without nodes, identify unclosed polygons and remove duplicate lines with the same beginning and ending nodes. All sliver polygons were removed either using eliminate, merge or manually.

Completeness_Report:

All fields for all polygons in the .pat are attributed. Some polygons in the Ncontrb_a field might have a 0 value. All fields for the lines in the .aat are attributed. The lines adjacent to the universal polygon are attributed with a 0 for the hu_level. These lines cannot be attributed until the adjacent states complete the linework at which point the highest level of hydrologic unit can be determined.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The watershed boundary dataset was produced using Enhanced Digital Raster Graphics (DRG-Es) digital images as source map. Data completeness for DRG files reflect content of the source graphic and may therefore be reflected in the completeness and accuracy of the watershed boundary dataset. The map was digitized from U.S. Geological Survey (USGS) 1:24,000-scale digital raster graphic base maps, with an inherited error of +/- 40 feet according to USGS National Map Accuracy Standards. Digitized line locations were held to the +/- 40 foot accuracy standards by ensuring that all lines were within a 12-meter buffer of where visual interpretion put the actual boundary. Any lines outside the buffer were corrected. It is estimated that the errors detected were less than 10 percent. It should be noted that while general rules of hydrology were used (such as water flows downhill), the location of boundaries is still somewhat subjective as the 1:24,000-scale DRG-E do not always provide enough information for identifying the location of the boundaries. In these instances 1-meter resolution digital ortho imagery and/or group consensus was used. Please refer to the methods section for more details on watershed delineation rules. Unquantifiable errors may be associated with coordinate shift (fuzzy tolerance was set to 0.000000001 meter, double precision), dangle (set to 15 meters). The default was used for all other tolerances. As with the original DRGs, DRG-E is cast in the Universal Transverse Mercator projection and is referenced to the 1927 North American Datum. When the DRGs are used in the 1983 North American Datum (NAD83) the alternate world files only approximate the NAD83 by shifting the coordinates of the imagery. The total error introduced using this shift is less than 2 meters for all DRG-E imagery.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: U.S. Geological Survey

Publication_Date: Unknown

Title: Enhanced Digital Raster Graphic

Geospatial_Data_Presentation_Form: Map

Online_Linkage: www.beartoothmaps.com

Source_Scale_Denominator: 24000

Type_of_Source_Media: online

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1999

Source_Currentness_Reference: map delineation

Source_Citation_Abbreviation: DRGE

Source_Contribution: Source Contribution map delineation and field verify

Source_Information:

Source_Citation:

Citation_Information:

Originator: U.S. Geological Survey

Publication_Date: Unknown

Title: Digital Orthophoto Quads

Geospatial_Data_Presentation_Form: raster digital data

Online_Linkage: <http://datagateway.nrcs.usda.gov>

Source_Scale_Denominator: 12000

Type_of_Source_Media: online

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: unknown

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: USGSDOQ

Source_Contribution:

GIS raster coverage used for reference in watershed boundary delineation

Process_Step:

Process_Description:

Process description: Level 6 (12-digit) watersheds were delineated in a nested hierarchical structure by using the existing Level 5 (11-digit) watershed delineation as a starting framework. The 11-digit code was reduced to 10 digits to conform to the new Federal Standards for the Delineation of Hydrologic Units Boundaries, by dropping the zero in the last position. Linework was digitized to 24k map accuracy standards using the DRGs as the official base map as outlined in the standard, and the existing linework as placement reference. Digital Orthophoto Quarter Quadrangles were used as a reference in extreme manmade altered areas and along the floodplaines of major river systems. The resolution of all linework was completed in accordance with the National Standards for Spatial Data Accuracy. All 1:24,000 meter scale linework was generated digitally on screen inside of Arcmap or Arcview.

Process_Date: 1999-2005

Process_Step:

Process_Description:

Statewide dataset clipped to extent of HUC8s 11100302, 11100303, 11090203.

Process_Date: 20080522

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey

Contact_Person: Shana Mashburn

Contact_Position: Hydrologist

Contact_Address:

Address_Type: mailing and physical address

Address: 202 NW 66th St., Bldg.#7

City: Oklahoma City

State_or_Province: Oklahoma

Postal_Code: 73116

Country: United States of America

Contact_Voice_Telephone: 405-810-4400

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: 2380

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Label point

Point_and_Vector_Object_Count: 2104

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains

Point_and_Vector_Object_Count: 2104

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: 0.000000

Ordinate_Resolution: 0.000000

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

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: ds402_wbdhuc12

Entity_Type_Definition: identifies watershed boundaries

Entity_Type_Definition_Source: n/a

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: Shape

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: OBJECTID

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

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: HUC_8

Attribute_Definition:

A unique 8-digit code from the USGS map series Hydrologic Unit Maps. The same number was used in every record that pertains to a subwatershed that resides in the same 9-digit subbasin.

Attribute_Definition_Source: Federal Standards for Delineation of Hydrologic Unit Boundaries

Attribute_Domain_Values:

Codeset_Domain:

Codeset_Name:

Federal Standards for the Delineation of Hydrologic Unit Boundaries

Codeset_Source:

Please refer to the Entity and Attribute Overview for valid values.

Attribute:

Attribute_Label: HUC_10

Attribute_Definition:

This field provides a unique 10-digit code for each watershed derived from the 8-digit code. This same number was used in every record that pertains to a subwatershed that resides in the same 10-digit watershed.

Attribute_Definition_Source: Federal Standards for Delineation of Hydrologic Unit Boundaries

Attribute_Domain_Values:

Codeset_Domain:

Codeset_Name:

Federal Standards for the Delineation of Hydrologic Unit Boundaries

Codeset_Source:

Please refer to the Entity and Attribute Overview for valid values.

Attribute:

Attribute_Label: HUC_12

Attribute_Definition:

This field provides a unique 12-digit code for each subwatershed derived from the 10-digit code.

Attribute_Definition_Source: Federal Standards for Delineation of Hydrologic Unit Boundaries

Attribute_Domain_Values:

Codeset_Domain:

Codeset_Name:

Federal Standards for the Delineation of Hydrologic Unit Boundaries

Codeset_Source:

Please refer to the Entity and Attribute Overview for valid values.

Attribute:

Attribute_Label: ACRES

Attribute_Definition:

Area of subwatershed including noncontributing areas calculated to acres as a whole number, no decimals.

Attribute_Definition_Source: Federal Standards for Delineation of Hydrologic Unit Boundaries

Attribute_Domain_Values:

Codeset_Domain:

Codeset_Name:

Federal Standards for the Delineation of Hydrologic Unit Boundaries

Codeset_Source:

Please refer to the Entity and Attribute Overview for valid values.

Attribute:

Attribute_Label: STATES

Attribute_Definition: The names of all state(s) in which the subwatershed falls.

Attribute_Definition_Source: Federal Standards for Delineation of Hydrologic Unit Boundaries

Attribute_Domain_Values:

Codeset_Domain:

Codeset_Name:

Federal Standards for the Delineation of Hydrologic Unit Boundaries

Codeset_Source:

Please refer to the Entity and Attribute Overview for valid values.

Attribute:

Attribute_Label: HU_10_DS

Attribute_Definition:

Drainage areas that do not flow toward the outlet of any hydrologic unit are considered noncontributing.

Attribute_Definition_Source: Federal Standards for Delineation of Hydrologic Unit Boundaries

Attribute_Domain_Values:

Codeset_Domain:

Codeset_Name:

Federal Standards for the Delineation of Hydrologic Unit Boundaries

Codeset_Source:

Please refer to the Entity and Attribute Overview for valid values.

Attribute:

Attribute_Label: HU_10_NAME

Attribute_Definition:

The 10-digit code of the 5th level hydrologic unit that is receiving the majority of the flow from the watershed that the 6th level hydrologic unit falls within. Outlets created by ditching or other artificial drainage were not considered for this field.

Attribute_Definition_Source: Federal Standards for Delineation of Hydrologic Unit Boundaries

Attribute_Domain_Values:

Codeset_Domain:

Codeset_Name:

Federal Standards for the Delineation of Hydrologic Unit Boundaries

Codeset_Source:

Please refer to the Entity and Attribute Overview for valid values.

Attribute:

Attribute_Label: HU_10_MOD

Attribute_Definition:

A unique name for each 5th level hydrologic unit that relates to the major water feature in which the polygon or the major water body contributes.

Attribute_Definition_Source: Federal Standards for Delineation of Hydrologic Unit Boundaries

Attribute_Domain_Values:

Codeset_Domain:

Codeset_Name:

Federal Standards for the Delineation of Hydrologic Unit Boundaries

Codeset_Source:

Please refer to the Entity and Attribute Overview for valid values.

Attribute:

Attribute_Label: HU_10_TYPE

Attribute_Definition:

This field identifies interbasin transfers (IT), dams at outlet (DM), and others that modify natural overland flow as modifications are identified from most substantial to least sustantial modification(s). Hydrologic units with no modification are marked with NM.

Attribute_Definition_Source:

Modification by Oklahoma Natural Resources Conservation Service to the Federal Standards for Delineation of Hydrologic Unit Boundaries

Attribute_Domain_Values:

Codeset_Domain:

Codeset_Name:

Federal Standards for the Delineation of Hydrologic Unit Boundaries

Codeset_Source:

Please refer to the Entity and Attribute Overview for valid values.

Attribute:

Attribute_Label: HU_12_DS

Attribute_Definition: This field identifies the type of watershed.

Attribute_Definition_Source: Federal Standards for Delineation of Hydrologic Unit Boundaries

Attribute:

Attribute_Label: HU_12_NAME

Attribute_Definition:

The 12-digit code of the 5th level hydrologic unit that is receiving the majority of the flow from the watershed that the 6th level hydrologic unit falls within. Outlets created by ditching or other artificial drainage were not considered for this field.

Attribute_Definition_Source: Federal Standards for Delineation of Hydrologic Unit Boundaries

Attribute:

Attribute_Label: HU_12_MOD

Attribute_Definition:

A unique name for each 6th level hydrologic unit that relates to the major water feature in which the polygon or the major water body contributes.

Attribute_Definition_Source: Federal Standards for Delineation of Hydrologic Unit Boundaries

Attribute:

Attribute_Label: HU_12_TYPE

Attribute_Definition:

This field identifies interbasin transfers (IT), dams at outlet (DM), and others that modify natural overland flow as modifications are identified from most substantial to least substantial modification(s). Hydrologic units with no modification are marked with NM.

Attribute_Definition_Source: Federal Standards for Delineation of Hydrologic Unit Boundaries

Overview_Description:

Entity_and_Attribute_Overview:

This is a description of attributes by field from the Federal Standards for Delineation of Hydrologic Unit Boundaries 1) Polygon attributes
Huc_8 : Eight Digit Hydrologic Unit Code - (REQUIRED) A unique 8-digit code from the USGS map series Hydrologic Unit Maps. The same number was used in every record that pertains to a subwatershed that resides in the same 8-digit subbasin.Numbers were assigned in an upstream to downstream order. Where no downstream/upstream relation could be determined numbers were assigned in a clockwise order.
Huc_10: Ten Digit Hydrologic Unit Code - (REQUIRED) This field provides a unique 10-digit code for each watershed. This same number was used in every record that pertains to a subwatershed that resides in the same 10-digit watershed. Numbers were assigned in an upstream to downstream order. Where no downstream/upstream relation could be determined numbers were assigned in a clockwise order.
Huc_12: Twelve Digit Hydrologic Unit Code - (REQUIRED) This field provides a unique 12-digit code for each subwatershed. Numbers were assigned in an upstream to downstream order. Where no downstream/upstream relationship could be determined numbers were assigned in a clockwise order.
Acres: Acres - (REQUIRED) Area of subwatershed including noncontributing areas calculated to acres as a whole number, no decimals. The "Acres" field was calculated from the "Area" field.
States: States - (REQUIRED) The "States" field includes the names of all state(s) in which the subwatershed falls. The 2-digit postal abbreviation in upper case and in alphabetical order was used, separated with a comma.
Ncontrb_a: Non-Contributing Area - (FIELD REQUIRED, ATTRIBUTES OPTIONAL) Drainage areas that do not flow toward the outlet of any hydrologic unit are considered noncontributing. If a noncontributing area is on the boundary between two or more hydrologic units, the noncontributing area is associated with the hydrologic unit adjacent to the low point on the boundary. This attribute should be the total of the noncontributing areas in a hydrologic unit calculated in acres.
Hu_10_ds: Fifth Level Downstream Hydrologic Unit Code - (FIELD REQUIRED, ATTRIBUTES OPTIONAL) This field has the 10-digit code of the 5th level hydrologic unit in which is receiving the majority of the flow from the watershed that the 6th level hydrologic unit falls. Outlets created by ditching or other artificial drainage were not considered for this field. If an hydrologic unit flows into an ocean or the Gulf of Mexico, this field was populated with "OCEAN" and if a hydrologic unit flows into one of the Great Lakes the term "LAKE" was used. If a hydrologic unit flows across international borders, "CANADA" or "MEXICO" was used depending on which country the hydrologic unit drains into. If an hydrologic unit is a closed basin, then the term "CLOSED BASIN"was used.
Hu_10_name: Fifth Level Hydrologic Unit Name - (FIELD REQUIRED, ATTRIBUTES OPTIONAL) This field used officially recognized names only. This field was populated by following the directions in subsection 6.3 "Watershed and Subwatershed Naming Protocol". The name used to attribute the watershed was used only once in a 4th level unit.
Hu_10_mod: Fifth Level Hydrologic Unit Modifications - (REQUIRED) This field identifies any type of modifications to natural overland flow that alters the location of the hydrologic unit boundary for a 10-digit watershed. This field shows the most substantial to least substantial modification(s) to the watershed boundary. One or more of the following abbreviations was used. SC - Stormwater Canal ID - Irrigation Ditch IT - Interbasin Transfer BC - Barge Canal SD - Stormwater Ditch PD - Pipe Diversion CD - Channel Diversion NC - Noncontributing KA - Karst LE - Levee NM - No Modifications TF - Transportation Feature (such as road, railroad, or docks) OC - Overflow Channel DM - Dam at outlet or hydrologic unit boundary OT - Other
Hu_10_type: Fifth Level Hydrologic Unit Type - (REQUIRED) This field was populated with the hydrologic unit type from the list provided that most closely identifies the watershed. S - "Standard" hydrologic unit - Any land hydrologic unit with drainage flowing to a single outlet point, excluding noncontributing areas. This includes areas or small triangular wedges between adjacent hydrologic units that remain after classic hydrologic units are delineated. Some examples include "true", "classic", "composite", and "remnant" hydrologic units. C - "Closed Basin" hydrologic unit - A drainage area that is 100 percent noncontributing. This means all surface flow is internal, no overland flow leaves the hydrologic unit through the outlet point. F - "Frontal" hydrologic unit - Areas along the coastline of lakes, oceans, bays, and others that have more than one outlet. These hydrologic units are predominantly land with some water areas at or near the outlet(s). W - "Water" hydrologic unit - Hydrologic units that are predominantly water with adjacent land areas, such as lakes, estuaries, or harbors. I - "Island" hydrologic unit - A hydrologic unit that is one or more islands and adjacent water out to the toe of the shore face. U - "Unclassified" hydrologic unit - A hydrologic unit that cannot be defined or does not fit into one of the types that have been listed.
Hu_12_ds: Sixth Level Downstream Hydrologic Unit Code - (FIELD REQUIRED, ATTRIBUTES OPTIONAL) This field was populated with the 12-digit code of the 6th level hydrologic unit that is receiving the majority of the flow from the subwatershed. Outlets created by ditching or other artificial drainage were not considered for this field. If a hydrologic unit flows into an ocean or the Gulf of Mexico this field was populate with "OCEAN" and if a hydrologic unit flows into one of the Great Lakes the term "LAKE" was used. If a hydrologic unit flows across international borders, "CANADA" or "MEXICO" was used depending on which country the hydrologic unit drains into. If an hydrologic unit is a closed basin, this field was populated with the term "CLOSED BASIN".
Hu_12_name: Sixth Level Hydrologic Unit Name - (FIELD REQUIRED, ATTRIBUTES OPTIONAL) Officially recognized names were used in this field. This field was populated by following the directions in subsection 6.3 "Watershed and Subwatershed Naming Protocol". The name used to attribute the subwatershed was used only once within a 4th level unit.
Hu_12_mod: Sixth Level Hydrologic Unit Modifications - (REQUIRED) This field identifies any type of manmade modification(s) to natural overland flow that alters the location of the hydrologic unit boundary for a 12-digit subwatershed. One or more of the following abbreviations was chosen for this field. SC - Stormwater Canal ID - Irrigation Ditch IT - Interbasin Transfer BC - Barge Canal SD - Stormwater Ditch PD - Pipe Diversion CD - Channel Diversion NC - Noncontributing KA - Karst LE - Levee NM - No Modifications OC - Overflow Channel DM - Dam at outlet or hydrologic unit boundary TF - Transportation Feature (road, railroad, docks, and others) OT - Other
Hu_12_type: Sixth Level Hydrologic Unit Type - (REQUIRED) This field was populated with the hydrologic unit type from the list provided that most closely identifies the subwatershed. S - "Standard" hydrologic unit - Any land hydrologic unit with drainage flowing to a single outlet point, excluding noncontributing areas. This includes areas or small triangular wedges between adjacent hydrologic units that remain after classic hydrologic units are delineated. Some examples include "true", "classic", "composite", and "remnant" hydrologic units. C - "Closed Basin" hydrologic unit - A drainage area that is 100 percent noncontributing. This means all surface flow is internal, no overland flow leaves the hydrologic unit through the outlet point. F - "Frontal" hydrologic unit - Areas along the coastline of lakes, oceans, bays, etc. that have more than one outlet. These HU's are predominantly land with some water at or near the outlet(s). W - "Water" hydrologic unit - Hydrologic units that are predominantly water with adjacent land areas, such as lakes, estuaries, or harbors. I - "Island" hydrologic unit - A hydrologic unit that is one or more islands and adjacent water out to the toe of the shore face. U - "Unclassified" hydrologic unit - A hydrologic unit that cannot be defined or does not fit into one of the types that have been listed.
2) Line attributes
Hu_level: Hydrologic Unit Level - (REQUIRED) This field provides the means to create cartographically pleasing maps. This field is populated with the highest hydrologic unit level (smallest number) for the line (arc) represented by the record. The attribute was recorded by using numbers 1 through 6 representing each level with 1 being the highest and 6 the lowest level. An example would be if a line represents a region, subregion, basin, subbasin, watershed, and subwatershed boundary, then this cell was populated with a 1 (Region). Below is a list of numbers used for each level.
Level Digit# Name 1 2 Region 2 4 Subregion 3 6 Basin 4 8 Subbasin 5 10 Watershed 6 12 Subwatershed
Linesource: Line Spatial Data Source - (REQUIRED) The Linesource indicates the base map source(s) used to delineate at 1:24,000 scale. The field was populated using one of the standardized code(s) listed below. If more than one code was used, then a comma was used to separate the codes. TOPO24 - Delineation from hardcopy 1:24,000-scale topographic maps TOPO25 - Delineation from hardcopy 1:25,000-topgraphic maps, only Alaska and Caribbean TOPO63 - Delineation from hardcopy 1:63,360-topographic maps, only Alaska and Caribbean DRG24 - Delineation from 1:24,000-scale Digital Raster Graphics DRG25 - Delineation from 1:25,000-scale Digital Raster Graphics, only Alaska and Caribbean DRG63 - Delineation from 1:63,360-scale Digital Raster Graphics, only Alaska and Caribbean DEM10 - Derived from 10-meter Digital Elevation Model DEM30 - Derived from 30-meter Digital Elevation Model NED30 - Derived from 30-meter National Elevation Dateset Model EDNA30 - (formally NED-H), derived from 3- meter Elevation Derivatives for National Applications BATH"scale" (for example BATH24) - Interpreted from NOAA 1:24,000-scale bathymetric data HYPSO"scale" (for example HYPSO24)- Delineated from 1:24,000-scale contour data ORTHO"scale" (for example ORTHO12) - Interpreted from 1:12,000-scale Ortho-imagery DEDEM10 - Drainage enforced 10-meter Digital Elevation Model DEDEM30 - Drainage enforced 30-meter Digital Elevation Model GPS - Derived from Global Positioning System LIDAR - Derived from LIDAR IFSAR - Derived from IFSAR data OTH - Other UNK - Unknown All other reference and source maps not listed should be noted in the metadata. Meta_id: Metadata ID Number - (REQUIRED) The Metadata ID is a code that identifies which metadata file applies to the arc. In most cases there is only one metadata file. However, in some cases more than one metadata file was used to identify different groups and/or procedures used to produce the lines. The metadata ID is a 4-character code starting with the 2-letter state postal code, followed by a 2-digit sequence number. For example "OK01", "ID02", for example.

Entity_and_Attribute_Detail_Citation: Federal Standard for Delineation of Hydrologic Unit Boundaries

Distribution_Information:

Distributor:

Contact_Information:

Contact_Person_Primary:

Contact_Person: James E. Henley

Contact_Organization: Oklahoma Natural Resources Conservation Service

Contact_Address:

Address_Type: mailing address

Address: 100 USDA Ste. 206

City: Stillwater

State_or_Province: Oklahoma

Postal_Code: 74074

Country: USA

Contact_Voice_Telephone: 405-742-1114

Contact_Electronic_Mail_Address: James.Henley@ok.usda.gov

Contact_Instructions: please e-mail with data requests.

Resource_Description: Downloadable Data

Distribution_Liability:

The distributor shall not be held liable for improper or incorrect use of these data, based on the description of appropriate/inappropriate uses described in this metadata document. It is strongly recommended that these data are directly acquired from the distributor and not indirectly through other sources which may have changed the data in some way. These data should not be used at scales greater than 1:24,000 for the purpose of identifying hydrographic watershed boundary feature locations in 20050930 . Natural Resources Conservation Service makes no claims for the suitability of these data for other purposes. Natural Resources Conservation Service should be acknowledged as the data source in products derived from these data. The 20050930 Watershed Boundary Dataset is public information and may be interpreted by all organizations, agencies, units of government, or others based on needs; however, the users 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 these maps were originally delineated can result in 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 from the source distributor.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: FTP

File_Decompression_Technique: ZIP

Transfer_Size: 10.208

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: <http://datagateway.nrcs.usda.gov>

Fees: none

Metadata_Reference_Information:

Metadata_Date: 20081215

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Karen Hanson

Contact_Organization: U.S. Geological Survey

Contact_Address:

Address_Type: mailing address

Address: 2329 Orton Circle

City: West Valley

State_or_Province: Utah

Postal_Code: 84119

Country: USA

Contact_Voice_Telephone: 801-908-5038

Contact_Facsimile_Telephone: 801-908-5000

Contact_Electronic_Mail_Address: khanson@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_Extensions:

Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>

Profile_Name: ESRI Metadata Profile