dentification_Information: Citation: Citation_Information: Originator: USDA, Natural Resources Conservation Service Publication_Date: 19981201 Title: Hydrologic Units - North Carolina Geospatial_Data_Presentation_Form: Map Publication_Information: Publication_Place: Raleigh, North Carolina Publisher: USDA, Natural Resources Conservation Service Other_Citation_Details: NCCGIA distributes this dataset Online_Linkage: CGDB layer listing and Metadata - Description: Abstract: The USDA-Natural Resources Conservation Service, Raleigh Office in cooperation with the NC Center for Geographic Information & Analysis,and the NC Dept. of Environment, Health and Natural Resources, Division of Water Quality developed the Hydrologic Units-North Carolina digital data to track resource and conservation activities in the state's river basins and subbasins. Using the 14-digit hyrologic unit code the regional, subregional, accounting, cataloging, NRCS sub-unit, and NRCS reporting unit boundaries id's are recorded. The area attributes allow the user to see hydrologic unit, river basin and subbasin levels of geography. Purpose: This data was created to assist governmental agencies and others in making resource management decisions through use of a Geographic Information System (GIS). Supplemental_Information: Data from the protected and critical watersheds layer for the state was used during the development of the HU boundaries. This coverage supersedes data on past versions, particularly the cama24.hu coverage, which was completed as a preliminary to this statewide version. Some boundaries may have changed between the two versions. There are two additional coverages which were generated from this data, the huncrb-river basins; and huncsb-subbasins files. See the cross references section for details. The following is an excerpt from the "North Carolina Hydrologic Unit River Basin Study," USDA, Natural Resources Conservation Service, November 1995. Under the sponsorship of the Water Resources Council, a nationally uniform hydrologic unit system was developed in 1974 by the US Geological Survey's Office of Water Data Coordination. This system divides the country into 21 regions, 222 subregions, 352 accounting units, and 2,149 cataloging units, based on surface hydrologic features. A hierarchical code consisting of two digits for each of the above four levels combine to form an eight-digit hydrologic unit. The hydrologic unit system is used to identify any hydrologic area of interest. An eight-digit hydrologic unit generally covers 700 or more square miles. In 1978, the USDA-Natural Resources Conservation Service (NRCS) issued a policy that all resource inventories and surveys were to be coded with and capable of being retrieved by hydrologic unit codes (HUCs). At about the same time, NRCS initiated a national program to further subdivide HUCs into watershed-sized areas (nominally 250,000 acres, or 390 square miles) for use in water resource planning. An extension of three digits was added to the eight-digit HUC to designate sub-watersheds, thus forming eleven-digit HUCs. This 1995 Hydrologic Unit (HU) Study divides the state river basins and subbasins into smaller fourteen-digit hydrologic units that will be useful in targeting project activities, resource inventories, and reporting onservation activities. These fourteen-digit hydrologic units of approximately 4,000 acres (6 sqare miles) to 50,000 acres (78 square miles) are small enough in size to be useful as a planning and reporting tool for the USDA-Natural Resources Conservation Service (NRCS) and other government and state agencies. This 1995 fourteen-digit HU map will replace the 1974 eight- digit HU map [U.S. Water Resource Council (WRC)] and the 1978 NRCS eleven-digit HU map as the locating tool for planning in NRCS. The 1995 HU map were produced using 7.5 minute USGS quadrangle base maps (1:24,000 scale). 14-digit number breakdown: Assigned by US Water Subunit Reporting Unit (established Resource Council (1978 NRCS) during this study) |---------------------|----------|--------| 0 3 0 6 0 1 0 1 0 1 0 0 1 0 |----|----|-----|-----| | | | | | | | Cataloging Unit Boundary | | Accounting Unit Boundary | Subregional Boundary Regional Boundary NOTE: The subbasin 6-digit code (SUBBASIN#) was developed independently from the hydrologic unit codes, from an entirely different numbering system. (Example of code: 03-03-01.) The first two numbers identify the river basin designations adopted by the Environmental Protection Agency. (Date of source: 1974.) Subbasin boundaries were added within individual river basin boundaries (by the office that is now known as the Division of Water Quality, Water Quality Planning Section). Sequential numbers (example -01) were added by DWQ to the first four-digit EPA code to give each subbasin a unique six-digit identifier. (Each subbasin incorporates three or more hydrologic units. The subbasin boundaries have been modified to be coincident with the hydrologic unit boundaries.) Contact Alan Clark at DWQ for more information on the subbasin# code (733-5083, extension 570). system filename: hunc file size = 9.8 mb (huncrb and huncsb need to be updated whenever hunc is updated). Revisions and updates to this layer include: 4.) filename: hunc1298 The December 1998 update to this layer consisted of projecting the data from NAD27 datum, State Plane projection, units of measure feet TO: NAD83 DATUM, State Plane PROJECTION, UNITS OF MEASURE METERS. This was done to comply with the NC Geographic Information Coordinating Council's "Statement of Direction for North Carolina Corporate Geographic Database Horizontal Reference, Datum and Unit of Measure". This reprojecting was done in various ways depending on the data type and content. Vector data was projected using the 'project' command in ESRI's Arc software and topology was cleaned and built based on coverage needs. Raster data was projected using ESRI's Grid module and various steps as applicable. 3.)filename: hunc496 The April 15, 1996 update included restoring the Arc Attribute Table (AAT) to the coverage. This was lost while processing the file for river basins and subbasins attributes. It also included names and 6-digit identification numbers added for subbasins as well as names and abbreviations added for river basins. Some minor boundary adjustments were made throughout the coverage to make the Hydrologic Units boundaries coincident with the Water Supply Watershed boundaries. 2.) filename: nc24hu1194 This is the first version of the hydrologic units as studied by NCDWQ and NRCS, statewide. 1.) filename: cam24.hu1194 This file contains only the coastal area of NC, and has been superceded by the full state coverage. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19941130 Ending_Date: 19981201 Currentness_Reference: Data creation and revision dates Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -84.291 East_Bounding_Coordinate: -75.573 North_Bounding_Coordinate: 36.558 South_Bounding_Coordinate: 33.883 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: Hydrologic units Theme_Keyword: River basin Theme_Keyword: River subbasin Place: Place_Keyword_Thesaurus: William S. Powell, The North Carolina GAZETTEER, A Dictionary of Tar Heel Places, (Chapel Hill: University of North Carolina Press), August 1984. Place_Keyword: North Carolina Access_Constraints: None Use_Constraints: Acknowledgement of products derived from this data set should cite the following: The source of the Hydrologic Units - North Carolina data is the North Carolina Corporate Geographic Database. Earlier ersions of this data set may exist. The user must be sure to use the appropriate data set for the time period of interest. While efforts have been made to ensure that these data are accurate and reliable within the state of the art, CGIA cannot assume liability for any damages or misrepresentation caused by any inaccuracies in the data or as a result of changes to the data caused by system transfers. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Sherman Biggerstaff Contact_Organization: USDA-Natural Resources Conservation Service Contact_Position: Planning Engineer Contact_Address: Address_Type: Mailing and physical address Address: 4405 Bland Road City: Raleigh State_or_Province: North Carolina Postal_Code: 27609 Country: U.S.A. Contact_Voice_Telephone: (919) 873-2132 Contact_Facsimile_Telephone: (919) 790-2904 Hours_of_Service: 8:00am to 5:00pm Contact_Instructions: Preferred contact is by mail or telephone. Data_Set_Credit: USDA Natural Resources Conservation Service Director, Richard A. Gallo USDA Natural Resources Conservation Staff, Sherman Biggerstaff 4405 Bland Road Raleigh, NC 27609 DENR-Div. of Water Quality - Water Quality Planning Section Director, Steve Tedder DENR-Water Quality Section-Water Quality Planning Staff, Alan Clark 512 N. Salisbury Street Raleigh, NC 27611 North Carolina Center for Geographic Information & Analysis 301 North Wilmington Street, Suite 700 Raleigh, NC 27601-2825 Native_Data_Set_Environment: The data reside in a current version of ESRI's ARC/INFO GIS software on a Unix, SUN Sparc server. Cross_Reference: Citation_Information: Originator: USDA-Natural Resources Conservation Service Publication_Date: 199511 Title: North Carolina Cooperative Hydrologic Unit River Basin Study Publication_Information: Publication_Place: Raleigh, North Carolina Publisher: USDA-Natural Resources Conservation Service Cross_Reference: Citation_Information: Originator: USDA-Natural Resources Conservation Service Publication_Date: 199506 Title: NRCS National Bulletin #170-304 Mapping and Digitizing Watershed and sub-watershed hydrologic unit boundaries Publication_Information: Publication_Place: Washington D.C. PO Box 2890 20013 Publisher: USDA-Natural Resources Conservation Service Cross_Reference: Citation_Information: Originator: USDA-Natural Resources Conservation Service Publication_Date: 19981201 Title: Hydrologic Units NC - River Basins Geospatial_Data_Presentation_Form: Map Publication_Information: Publication_Place: Raleigh, North Carolina Publisher: North Carolina Center for Geographic Information and Analysis Other_Citation_Details: NCCGIA compiled this layer from the hydrologic units data. Online_Linkage: CGDB layer listing and Metadata - Cross_Reference: Citation_Information: Originator: USDA-Natural Resources Conservation Service Publication_Date: 19981201 Title: Hydrologic Units NC - Subbasins Geospatial_Data_Presentation_Form: Map Publication_Information: Publication_Place: Raleigh, North Carolina Publisher: North Carolina Center for Geographic Information and Analysis Other_Citation_Details: NCCGIA compiled this layer from the hydrologic units data. Online_Linkage: CGDB layer listing and Metadata - Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The USDA-Natural Resources Conservation Service delineated the hydrologic units for North Carolina on 24k USGS topographic maps. These boundaries were attributed with USDA-NRCS assification information, acres per polygon, and square miles per polygon. The digital files were plotted and overlayed to the originals and linework and label corrections were made. Once complete and under the direction of DENR-DWQ, the digital file was further defined by subbasins derived from HUs and the river basins derived by subbasins. Appropiate ids were added to the attribute files. Attribute accuracy is considered high. There are no lookup tables, annotation or cartosets for this data. Logical_Consistency_Report: Using ESRI's ARC/INFO GIS software, the data set was built for arc and polygon topology using the "build" command. The data set was then cleaned with a fuzzy tolerance of 1 foot. Topology has not been edited since the last build or clean. Completeness_Report: These data depict the boundaries and unit numbers from the USDA-NRCS Hydrologic Unit River Basin Study, 1995. The study divides the state river basins into subbasins used to track resource and conservation activities. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Hydrologic Units for North Carolina were delineated on 7.5 Minute USGS paper topographic maps which meet National Map Accuracy Standards, using a best estimate with reference to surrounding features. Boundaries drawn were digitized and checkplots were used to ensure correct boundary location, within a line-width. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: USDA-Natural Resources Conservation Service Publication_Date: 19960415 Title: Hydrologic Units - North Carolina Geospatial_Data_Presentation_Form: Map Publication_Information: Publication_Place: Raleigh, North Carolina Publisher: USDA-Natural Resources Conservation Service Source_Scale_Denominator: 24000 Type_of_Source_Media: Paper Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19941130 Ending_Date: 19981201 Source_Currentness_Reference: Original release date and revision date, respectively Source_Citation_Abbreviation: None Source_Contribution: Hydrologic units delineations for North Carolina Source_Information: Source_Citation: Citation_Information: Originator: US Geological Survey Publication_Date: 1938-1990 Title: USGS 7.5 Minute series quadrangles Geospatial_Data_Presentation_Form: Map Publication_Information: Publication_Place: Reston, Virginia Publisher: US Geological Survey Other_Citation_Details: Published map series Source_Scale_Denominator: 24000 Type_of_Source_Media: Paper Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1938 Ending_Date: 1990 Source_Currentness_Reference: Publication dates of quadrangles Source_Citation_Abbreviation: None Source_Contribution: Paper maps used to delineate the hydrologic units Process_Step: Process_Description: Hydrologic Units were delineated on USGS 1:24,000 paper topographic maps by following contour lines. HU codes were written onto the topo maps for later attribute coding. All topo maps within the Coastal Area Management Act (CAMA) area were given to CGIA for digitization. All other topos across the state were given to Westinghouse-Landmark GIS, Inc. for digitization. The USDA-Natural Resources Conservation Service delineated the hydrologic units for North Carolina on 24k USGS topographic maps. The digital files were plotted by CGIA and overlayed to the originals and reviewed by staff at NRCS and DENR-DWQ. Needed corrections were made. Once an agreed upon, digital file was created. DWQ assisted NRCS in modifying certain boundaries which were not at the time coincident with the subbasins that DWQ manages. After that was completed, NRCS met with officials from neighboring states (Virginia, South Carolina, Georgia, and Tennessee) to edgematch the Hydrologic Unit boundaries across the state line. This was done to the 11-digit boundary, not the 14-digit. Once this file was complete, DWQ assisted CGIA in establishing new subbasin boundaries derived from HU boundaries, and then established new river basin boundaries derived from subbasin boundaries. This digital file is updated as changes occur. Process_Date: 19941130 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Sherman Biggerstaff Contact_Organization: USDA-Natural Resources Conservation Service Contact_Position: Planning Engineer Contact_Address: Address_Type: Mailing and physical address Address: 4405 Bland Road City: Raleigh State_or_Province: North Carolina Postal_Code: 27609 Country: U.S.A. Contact_Voice_Telephone: (919) 873-2132 Contact_Facsimile_Telephone: (919) 790-2904 Hours_of_Service: 8:00am to 5:00pm Contact_Instructions: Preferred contact is by mail or phone. Process_Step: Process_Description: Hydrologic units were digitized from hand delineated boundaries on USGS 7.5 Minute series paper base maps. The digital files were attributed and checkplots were created for review by the Natural Resources Conservation Service and the NC Division of Water Quality. Necessary corrections were made and new plots were run. Post processing involved edgematching and mapjoining of USGS 7.5 Minute series maps used to create the digitized data. This process generated one statewide polygon coverage. CGIA updates the digital file as needed. Process_Date: 19960415 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: NCCGIA Contact_Address: Address_Type: Mailing and physical address Address: 301 North Wilmington Street, Suite 700 City: Raleigh State_or_Province: North Carolina Postal_Code: 27601-2825 Country: U.S.A. Contact_Voice_Telephone: (919) 733-2090 Contact_Facsimile_Telephone: (919)715-0725 Contact_Electronic_Mail_Address: dataq@ncmail.net Hours_of_Service: 8:30AM - 5:30PM Contact_Instructions: Phone and electronic mail preferred Process_Step: Process_Description: Delineated hydrologic unit boudaries on 24k topographic maps were given to Westinghouse-Landmark GIS, Inc. by the NRCS. The HU boundaries were hand-digitized and combined into on file. After some review by NRCS and DWQ, this file was given to NCCGIA where it was joined to the existing 24 counties of coastal HU data. This file was then checked by NRCS and DWQ staff. Corrections were made. Process_Date: 19941130 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: William Moore Contact_Organization: Westinghouse-Landmark GIS, Inc. Contact_Position: GIS Dept. Supervisor Contact_Address: Address_Type: Mailing and physical address Address: 1903 North Harrison Avenue City: Cary State_or_Province: North Carolina Postal_Code: 27513 Country: U.S.A. Contact_Voice_Telephone: (919) 677-0040 Contact_Facsimile_Telephone: (919) 677-0942 Hours_of_Service: 8:30AM - 5:30PM Contact_Instructions: Phone preferred Spatial_Data_Organization_Information: Indirect_Spatial_Reference: _Method: 14-digit HU id number 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: 7111 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains Point_and_Vector_Object_Count: 1602 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Node, planar graph Point_and_Vector_Object_Count: 5511 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Area point Point_and_Vector_Object_Count: 1601 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: State Plane Coordinate System 1983 State_Plane_Coordinate_System: SPCS_Zone_Identifier: 3200 Lambert_Conformal_Conic: Standard_Parallel: 34.333 Standard_Parallel: 36.167 Longitude_of_Central_Meridian: 79.000 Latitude_of_Projection_Origin: 33.750 False_Easting: 609601.22 False_Northing: 0.000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 1 Ordinate_Resolution: 1 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 1980 Semi-major_Axis: 6378137 Denominator_of_Flattening_Ratio: 298.257 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Hydrologic Units Entity_Type_Definition: Boundaries and unit numbers for the river basins and subbasins in North Carolina Entity_Type_Definition_Source: USDA-Natural Resources Conservation Service Attribute: Attribute_Label: AREA Attribute_Definition: Total area in coverage units Attribute_Definition_Source: software computed Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.000 Range_Domain_Maximum: 1,819,772,416.000 Attribute_Units_of_Measure: meters Attribute_Measurement_Resolution: .001 Attribute_Measurement_Frequency: None planned Attribute: Attribute_Label: PERIMETER Attribute_Definition: Total perimeter in coverage units Attribute_Definition_Source: Software computed Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1,902.720 Range_Domain_Maximum: 2,156,915.250 Attribute_Units_of_Measure: Meters Attribute_Measurement_Resolution: 0.001 Attribute_Measurement_Frequency: None planned Attribute: Attribute_Label: HUNC# Attribute_Definition: Polygon internal identification number Attribute_Definition_Source: Software computed Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 1,602 Attribute_Measurement_Frequency: None planned Attribute: Attribute_Label: HUNC-ID Attribute_Definition: Polygon internal identification number Attribute_Definition_Source: Software computed Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 1,601 Attribute_Measurement_Frequency: None planned Attribute: Attribute_Label: HUCODE Attribute_Definition: 14-digit full HU code (includes hucode, husub, and hurep) Attribute_Definition_Source: USDA-Natural Resources Conservation Service Attribute_Domain_Values: Unrepresentable_Domain: Code used internally Attribute_Measurement_Frequency: As needed Attribute: Attribute_Label: HUCODE11 Attribute_Definition: 11-digit HU code (includes hucode and husub) Attribute_Definition_Source: USDA-Natural Resources Conservation Service Attribute_Domain_Values: Unrepresentable_Domain: Code used internally Attribute_Measurement_Frequency: As needed Attribute: Attribute_Label: HUCODE8 Attribute_Definition: Original 8-digit HU code Attribute_Definition_Source: USDA-Natural Resources Conservation Service Attribute_Domain_Values: Unrepresentable_Domain: Code used internally Attribute_Measurement_Frequency: As needed Attribute: Attribute_Label: HUSUB Attribute_Definition: 3-digit subunit HU code Attribute_Definition_Source: USDA-Natural Resources Conservation Service Attribute_Domain_Values: Unrepresentable_Domain: Code used internally Attribute_Measurement_Frequency: As needed Attribute: Attribute_Label: HUREP Attribute_Definition: 3-digit reporting unit HU code Attribute_Definition_Source: USDA-Natural Resources Conservation Service Attribute_Domain_Values: Unrepresentable_Domain: Code used internally Attribute_Measurement_Frequency: As needed Attribute: Attribute_Label: ACRES Attribute_Definition: Acres per polygon Attribute_Definition_Source: USDA-Natural Resources Conservation Service Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 39.47 Range_Domain_Maximum: 4.50E+05 Attribute_Units_of_Measure: Acres Attribute_Measurement_Resolution: 1.0 Attribute_Measurement_Frequency: As needed Attribute: Attribute_Label: SQ-MI Attribute_Definition: Square miles per polygon Attribute_Definition_Source: USDA-Natural Resources Conservation Service Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.06 Range_Domain_Maximum: 702.59 Attribute_Units_of_Measure: Square mile Attribute_Measurement_Resolution: 0.01 Attribute_Measurement_Frequency: As needed Attribute: Attribute_Label: SUBBASIN-NAME Attribute_Definition: Name of the subbasin Attribute_Definition_Source: DENR-Div. of Water Quality Attribute_Domain_Values: Unrepresentable_Domain: Unique value for each subbasin Attribute_Measurement_Frequency: As needed Attribute: Attribute_Label: SUBBASIN# Attribute_Definition: Identity number of subbasin NOTE: The subbasin 6-digit code (SUBBASIN#) was developed independently from the hydrologic unit codes, from an entirely different numbering system. (Example of code: 03-03-01.) The first two numbers identify the river basin designations adopted by the Environmental Protection Agency. (Date of source: 1974.) Subbasin boundaries were added within individual river basin boundaries (by the office that is now known as the Division of Water Quality, Water Quality Planning Section). Sequential numbers (example -01) were added by DWQ to the first four-digit EPA code to give each subbasin a unique six-digit identifier. (Each subbasin incorporates three or more hydrologic units. The subbasin boundaries have been modified to be coincident with the hydrologic unit boundaries.) Contact Alan Clark at DWQ for more information on the subbasin# code (733-5083, extension 570). Attribute_Definition_Source: DENR-Div. of Water Quality Attribute_Domain_Values: Unrepresentable_Domain: Unique value for each subbasin Attribute_Measurement_Frequency: As needed Attribute: Attribute_Label: RIVBASIN-ABRV Attribute_Definition: Abbreviation of the river basin name Attribute_Definition_Source: DENR-Div. of Water Quality Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: BRD Enumerated_Domain_Value_Definition: Broad River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: CHO Enumerated_Domain_Value_Definition: Chowan River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: CPF Enumerated_Domain_Value_Definition: Cape Fear River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: CTB Enumerated_Domain_Value_Definition: Catawba River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: FRB Enumerated_Domain_Value_Definition: French Broad River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: HIW Enumerated_Domain_Value_Definition: Hiwassee River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: LBR Enumerated_Domain_Value_Definition: Lumber River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: LTN Enumerated_Domain_Value_Definition: Tittle Tennessee River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: NEU Enumerated_Domain_Value_Definition: Neuse River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: NEW Enumerated_Domain_Value_Definition: New River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: PAS Enumerated_Domain_Value_Definition: Pasquotank River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: ROA Enumerated_Domain_Value_Definition: Roanoke River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: SAV Enumerated_Domain_Value_Definition: Savannah River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: TAR Enumerated_Domain_Value_Definition: Tar-Pamlico River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: WAT Enumerated_Domain_Value_Definition: Watauga River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: WOK Enumerated_Domain_Value_Definition: White Oak River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: YAD Enumerated_Domain_Value_Definition: Yadkin River Basin Enumerated_Domain_Value_Definition_Source: NRCS Attribute_Measurement_Frequency: As needed Attribute: Attribute_Label: RIVBASIN-NAME Attribute_Definition: river basin name Attribute_Definition_Source: DENR-Div. of Water Quality Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: BROAD Enumerated_Domain_Value_Definition: Broad River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: CHOWAN Enumerated_Domain_Value_Definition: Chowan River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: CAPE FEAR Enumerated_Domain_Value_Definition: Cape Fear River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: CATAWBA Enumerated_Domain_Value_Definition: Catawba River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: FRENCH BROAD Enumerated_Domain_Value_Definition: French Broad River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: HIWASSEE Enumerated_Domain_Value_Definition: Hiwassee River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: LUMBER Enumerated_Domain_Value_Definition: Lumber River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: LITTLE TENNESSEE Enumerated_Domain_Value_Definition: Tittle Tennessee River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: NEUSE Enumerated_Domain_Value_Definition: Neuse River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: NEW Enumerated_Domain_Value_Definition: New River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: PASQUOTANK Enumerated_Domain_Value_Definition: Pasquotank River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: ROANOKE Enumerated_Domain_Value_Definition: Roanoke River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: SAVANNAH Enumerated_Domain_Value_Definition: Savannah River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: TAR-PAMLICO Enumerated_Domain_Value_Definition: Tar-Pamlico River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: WATAUGA Enumerated_Domain_Value_Definition: Watauga River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: WHITE OAK Enumerated_Domain_Value_Definition: White Oak River Basin Enumerated_Domain_Value_Definition_Source: NRCS Enumerated_Domain: Enumerated_Domain_Value: YADKIN Enumerated_Domain_Value_Definition: Yadkin River Basin Enumerated_Domain_Value_Definition_Source: NRCS Attribute_Measurement_Frequency: As needed Detailed_Description: Entity_Type: Entity_Type_Label: Hydrologic Units Entity_Type_Definition: Boundaries and unit numbers for the hydrologic units, river basins and subbasins in North Carolina Entity_Type_Definition_Source: USDA-Natural Resources Conservation Service Attribute: Attribute_Label: FNODE# Attribute_Definition: From-node identifier of linear feature Attribute_Definition_Source: Software computed Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 5,511 Attribute_Measurement_Frequency: None planned Attribute: Attribute_Label: TNODE# Attribute_Definition: To-node identifier of linear feature Attribute_Definition_Source: Software computed Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 5,511 Attribute_Measurement_Frequency: None planned Attribute: Attribute_Label: LPOLY# Attribute_Definition: Internal number of poly to left of arc Attribute_Definition_Source: Software computed Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 1,602 Attribute_Measurement_Frequency: None planned Attribute: Attribute_Label: RPOLY# Attribute_Definition: Internal number of poly to right of arc Attribute_Definition_Source: Software computed Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 1,602 Attribute_Measurement_Frequency: None planned Attribute: Attribute_Label: LENGTH Attribute_Definition: Length of arc in coverage units Attribute_Definition_Source: Software computed Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.337 Range_Domain_Maximum: 81,498.836 Attribute_Units_of_Measure: meters Attribute_Measurement_Resolution: 0.001 Attribute_Measurement_Frequency: As needed Attribute: Attribute_Label: HUNC# Attribute_Definition: Internal feature number Attribute_Definition_Source: Software computed Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 7,111 Attribute_Measurement_Frequency: As needed Attribute: Attribute_Label: HUNC-ID Attribute_Definition: Internal ID number Attribute_Definition_Source: User defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 7,111 Attribute_Measurement_Frequency: As needed Attribute: Attribute_Label: HU Attribute_Definition: Specific arc identifier Attribute_Definition_Source: USDA-Natural Resources Conservation Service Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: R Enumerated_Domain_Value_Definition: Regional boundary (defined in 1974 HU map) Enumerated_Domain_Value_Definition_Source: USDA-Natural Resources Conservation Service Enumerated_Domain: Enumerated_Domain_Value: S Enumerated_Domain_Value_Definition: Subregional boundary (defined in 1974 HU map) Enumerated_Domain_Value_Definition_Source: USDA-Natural Resources Conservation Service Enumerated_Domain: Enumerated_Domain_Value: A Enumerated_Domain_Value_Definition: Accounting unit boundary defined in 1974 HU map) Enumerated_Domain_Value_Definition_Source: USDA-Natural Resources Conservation Service Enumerated_Domain: Enumerated_Domain_Value: C Enumerated_Domain_Value_Definition: Cataloging unit boundary defined in 1974 HU map) Enumerated_Domain_Value_Definition_Source: USDA-Natural Resources Conservation Service Enumerated_Domain: Enumerated_Domain_Value: SU Enumerated_Domain_Value_Definition: NRCS subunit boundary (defined in 1978) Enumerated_Domain_Value_Definition_Source: USDA-Natural Resources Conservation Service Enumerated_Domain: Enumerated_Domain_Value: RU Enumerated_Domain_Value_Definition: NRCS reporting unit boundary defined in 1978) Enumerated_Domain_Value_Definition_Source: USDA-Natural Resources Conservation Service Enumerated_Domain: Enumerated_Domain_Value: NC Enumerated_Domain_Value_Definition: NC state boundary Enumerated_Domain_Value_Definition_Source: USDA-Natural Resources Conservation Service Attribute_Measurement_Frequency: As needed Overview_Description: Entity_and_Attribute_Overview: A polygon coverage with areas depicting the boundaries and unit numbers of the state's river basins and subbasins. The polygon attribute table (PAT) has attribute data including total area in coverage units, total perimeter, polygon internal identification number, polygon user identification number, several NRCS codes indicating HU divisions, acres per polygon, square miles per polygon, the name and identity number of the subbasin, and the name and abbreviated name of the river basin. HUNC.PAT Polygon Attribute Table COLUMN ITEM NAME WIDTH OUTPUT TYPE DEC DESCRIPTION 1 AREA 4 12 F 3 Total area in square meters 5 PERIMETER 4 12 F 3 Total perimeter in linear meters 9 HUNC# 4 5 B - Polygon internal ID number 13 HUNC-ID 4 5 B - Polygon user ID number 17 HUCODE14 14 14 C - 14-digit full HU code(includes hu-code, sub, and rep) 31 HUCODE11 11 11 C - 11-digit HU code (includes hu-code and sub) 42 HUCODE8 8 8 C - 8-digit HU code (includes hu-code, sub) 50 HUSUB 3 3 C - 3-digit subunit HU code 53 HUREP 3 3 C - 3-digit reporting unit HU code 56 ACRES 8 8 F 2 Acres per polygon 64 SQ-MI 8 8 F 2 Square miles per polygon 72 SUBBASIN-NAME 8 8 C - Name of the subbasin 80 SUBBASIN# 8 8 C - Identification number of subbasin 88 RIVBASIN-ABRV 8 8 C - River basin abbreviation 96 RIVBASIN-NAME 20 20 C - River basin name HUNC.AAT Arc Attribute Table COLUMN ITEM NAME WIDTH OUTPUT TYPE DEC DESCRIPTION 1 FNODE# 4 5 B - From-node id of linear feature 5 TNODE# 4 5 B - To-node id of linear feature 9 LPOLY# 4 5 B - Left-side polygon id of linear feature 13 RPOLY# 4 5 B - Right-side polygon id of linear feature 17 LENGTH 4 12 F 3 Length of linear feature in meters 21 HUNC# 4 5 B - Internal id number 25 HUNC-ID 4 5 B - Internal id number 29 HU 2 2 C - Specific arc identifier Entity_and_Attribute_Detail_Citation: See Cross_Reference item. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: NC Center for Geographic Information and Analysis Contact_Position: Production Services Contact_Address: Address_Type: Mailing and physical address Address: 301 North Wilmington Street, Suite 700 City: Raleigh State_or_Province: North Carolina Postal_Code: 27601-2825 Country: USA Contact_Voice_Telephone: (919) 733-2090 Contact_Facsimile_Telephone: (919) 715-0725 Contact_Electronic_Mail_Address: dataq@ncmail.net Hours_of_Service: 8:30AM - 5:30PM Contact_Instructions: Phone and electronic mail preferred For current price information use a web browser: COST INFORMATION - Resource_Description: Hydrologic Units - North Carolina Distribution_Liability: NCCGIA is charged with the development and maintenance of the State's corporate geographic database and, in cooperation with other mapping organizations, is committed to offering its users accurate, useful, and current information about the state. Although every effort has been made to ensure the accuracy of information, errors and conditions originating from physical sources used to develop the corporate database may be reflected in the data supplied. The client must be aware of data conditions and bear responsibility for the appropriate use of the information with respect to possible errors,original map scale, collection methodology, currency of data, and other conditions specific to certain data. NCCGIA does not support secondary distribution of this data. The use of trade names or commercial products does not constitute their endorsement by the NCCGIA or North Carolina State Government. Standard_Order_Process: Non-digital_Form: FOR DIGITAL OR NON-DIGITAL DATA, Contact NC CGIA, Data Distribution to order data, Phone 919.733.2090 ... Email dataq@ncmail.net ... Web Page order form Fees: For current FORMAT/MEDIA INFORMATION, use a web browser: or phone NC CGIA Data Distribution 919.733.2090 Custom_Order_Process: Data creation and large data analysis jobs contact Database Administration P:(919)733-2090. All data is available through standard ordering procedures on a cost recovery basis. Technical_Prerequisites: All formats supplied are created using ARC/INFO GIS software on Unix workstations. Other formats are available. Format compatibility is the user's responsibility. For more information on formats and media, use a web browser: FORMAT/MEDIA INFORMATION - Available_Time_Period: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19960415 Ending_Date: Present Metadata_Reference_Information: Metadata_Date: 20010925 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: North Carolina Center for Geographic Information and Analysis Contact_Position: Database Management Contact_Address: Address_Type: Mailing and physical address Address: 301 North Wilmington Street, Suite 700 City: Raleigh State_or_Province: North Carolina Postal_Code: 27601-2825 Country: USA Contact_Voice_Telephone: (919) 733-2090 Contact_Facsimile_Telephone: (919) 715-0725 Contact_Electronic_Mail_Address: dataq@ncmail.net Hours_of_Service: 8:30AM - 5:30PM Contact_Instructions: Phone and electronic mail preferred Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: Local time Metadata_Access_Constraints: None Metadata_Use_Constraints: This metadata file is to accompany the data set identified and received from NCCGIA. NCCGIA does not support secondary distribution. If this data file was received from anyone other than NCCGIA, this metadata file and the data set it describes may contain discrepancies. Generated by mp version 2.6.0 on Tue Sep 25 16:15:39 2001