Nebraska Hydrologic Units - 8 digits

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: USDA/NRCS - National Cartography & Geospatial Center
Publication_Date: Unknown
Title:
Nebraska Hydrologic Units - 8 digits
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Forth Worth, Texas
Publisher: USDA/NRCS
Online_Linkage: http://dnr.nebraska.gov/surface-water-data
Description:
Abstract:
REQUIRED: A brief narrative summary of the data set.
Purpose:
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.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1999 - Present
Currentness_Reference:
REQUIRED: The basis on which the time period of content information is determined.
Status:
Progress: In work
Maintenance_and_Update_Frequency: REQUIRED: The frequency with which changes and additions are made to the data set after the initial data set is completed.
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -105.732171
East_Bounding_Coordinate: -94.602107
North_Bounding_Coordinate: 44.503842
South_Bounding_Coordinate: 38.940314
Keywords:
Theme:
Theme_Keyword_Thesaurus: Standard for Geospatial Dataset File Naming
Theme_Keyword: Hydrologic Units, HUC, WBD
Place:
Place_Keyword_Thesaurus: GNIS
Place_Keyword: Nebraska
Place_Keyword: *
Access_Constraints: REQUIRED: Restrictions and legal prerequisites for accessing the data set.
Use_Constraints:
The U.S. Department of Agriculture, Service Center Agencies should be acknowledged as the data source in products derived from these data.

This data set is not designed for use as a primary regulatory tool in permitting or citing decisions, but may be used as a reference source.  This information may be interpreted by organizations, agencies, units of government, or others based on needs; however, they are responsible for the appropriate application.  Federal, State, or local regulatory bodies are not to reassign to the Service Center Agencies any authority for the decisions that they make.  The Service Center Agencies will not perform any evaluations of these data for purposes related solely to State or local regulatory programs.

Photographic or digital enlargement of these data to scales greater than at which they were originally mapped can cause misinterpretation of the data.  Digital data files are periodically updated, and users are responsible for obtaining the latest version of the data.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: National Cartography and Geospatial Center
Contact_Address:
Address:
501 W. Felix St, Bldg 23
City: Fort Worth
State_or_Province: Texas
Postal_Code: 76115
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.3000
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Data_Quality_Information:
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: NRCS State Offices
Publication_Date: 1999
Title:
Watershed Boundary Data - Hydrologic Unit
Source_Scale_Denominator: 24,000
Process_Step:
Process_Description:
The dataset was modified by the USDA-NRCS National Cartography & Geospatial Center (NCGC) by creating a seamless dataset for the entire country for all 6 levels. NCGC has included attributes for hydrologic unit codes, hydrologic unit name, downstream hydrologic unit, man-made modifications to overland flow that alter the location of the HU boundary, and HU type for each hydrologic unit level 1-6.  NCGC has also added a square miles field to sub-basin.  An acres field already exists for each subwatershed.  The square miles and acres field was calculated in Albers Equal Area, NAD83 by NCGC.  At this time, not all records have attributes for all the fields, but may be filled in by the user for local projects or will be filled in at a later date. NCGC personnel have created 2 shapefiles from the national WBD.  One shapefile has attributes for 10 and 12-digit with polygons for the 12-digit HUs.  An accompanying line file showing the same linework with the three attribute fields is delivered with the polygon shapefile.  For a complete description of the attributes and processes used to delineate hydrologic units to 1:24,000 scale accuracy, please refer to document Watershed Boundary Dataset (WBD) User Guide.
Process_Date: 200803
Process_Step:
Process_Description:
Metadata imported.
Source_Used_Citation_Abbreviation:
C:\DOCUME~1\GFollmer\LOCALS~1\Temp\xml75.tmp
Process_Date: 20091116
Process_Time: 10533000
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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: 71
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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: 2600
Lambert_Conformal_Conic:
Standard_Parallel: 40.000000
Standard_Parallel: 43.000000
Longitude_of_Central_Meridian: -100.000000
Latitude_of_Projection_Origin: 39.833333
False_Easting: 1640416.666667
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000454
Ordinate_Resolution: 0.000454
Planar_Distance_Units: survey feet
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Resolution: 1.000000
Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinates
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Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: gisbasedata.GISWRITER.HUC_8_USGS
Attribute:
Attribute_Label: OBJECTID
Attribute_Definition:
Internal feature number.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: HUC_8
Attribute:
Attribute_Label: HUC_4
Attribute:
Attribute_Label: NAME_1
Attribute:
Attribute_Label: Shape
Attribute_Definition:
Feature geometry.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Coordinates defining the features.
Attribute:
Attribute_Label: Shape.area
Attribute:
Attribute_Label: Shape.len
Overview_Description:
Entity_and_Attribute_Overview:
Hydrologic Unit delineation are closed polygons that encompass all area draining toward the lowest point (called outlet or pour point) in the polygon. Because of nominal sizes for the different hydrologic unit level: Watershed (40,000 to 250,000 acres) and Sub-watershed (3,000 minimum, generally 10,000 to 40,000 acres), some polygons do not include all areas up to the drainage divide, but all areas are included up 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 number that contains the Watershed. Likewise the Sub-watershed hydrologic unit codes start with the 10-digit Watershed number that contains the Sub-watershed. Each hydrologic unit has a unique hydrologic code
Entity_and_Attribute_Detail_Citation:
Detailed information about the attributes is available from the Watershed Boundary Dataset (WBD) User Guide (wbd_user_guide.doc) that is available with each gateway request.
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Nebraska Department of Natural Resources
Contact_Person: GIS Coordinator
Contact_Address:
Address_Type: mailing and physical address
Address:
301 Centennial Mall South
City: Lincoln
State_or_Province: Nebraska
Postal_Code: 68509
Country: U.S.A.
Contact_Voice_Telephone: 402-471-2363
Contact_Facsimile_Telephone: 402-471-2900
Contact_Electronic_Mail_Address: dnr.gis@nebraska.gov
Resource_Description: Downloadable Data
Distribution_Liability:
Although these data have been processed successfully on a computer system at the U.S. Department of Agriculture, no warranty expressed or implied is made by the Service Center Agencies regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty.  The U.S. Department of Agriculture will warrant the delivery of this product in computer readable format, and will offer appropriate adjustment of credit when the product is determined unreadable by correctly adjusted computer input peripherals, or when the physical medium is delivered in damaged condition.  Request for adjustment of credit must be made within 90 days from the date of this shipment from the ordering site.

Neither the U.S. Department of Agriculture, nor any of its agencies are liable for misuse of the data, for damage, for transmission of viruses, or for computer contamination through the distribution of these data sets.  The U.S. Department of Agriculture prohibits discrimination in all its programs and activities on the basis of race, color, national origin, sex, religion, age, disability, political beliefs, sexual orientation, or marital or family status. (Not all prohibited bases apply to all programs.)
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ARC/INFO Shape
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Metadata_Reference_Information:
Metadata_Date: 20091118
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: REQUIRED: The organization responsible for the metadata information.
Contact_Person: REQUIRED: The person responsible for the metadata information.
Contact_Address:
Address_Type: REQUIRED: The mailing and/or physical address for the organization or individual.
City: REQUIRED: The city of the address.
State_or_Province: REQUIRED: The state or province of the address.
Postal_Code: REQUIRED: The ZIP or other postal code of the address.
Contact_Voice_Telephone: REQUIRED: The telephone number by which individuals can speak to the organization or individual.
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
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