8 Digit Watershed Boundary Dataset

Metadata also available as

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator:
U.S. Department of Agriculture, Service Center Agencies - National Geospatial Management Center
Publication_Date: 20130101
Title: 8 Digit Watershed Boundary Dataset
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Reston, VA
Publisher: USDA/NRCS - National Geospatial Management Center
Description:
Abstract:
This dataset at 1:24,000 scale is a greatly expanded version of the hydrologic units created in the mid-1970's by the U.S. Geological Survey under the sponsorship of the Water Resources Council. The WBD is a complete set of hydrologic units from new watershed and subwatesheds less than 10,000 acres to entire river systems draining large hydrologic unit regions, all attributed by a standard nomenclature.
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: 20130101
Currentness_Reference: Ground condition
Status:
Progress: In work
Maintenance_and_Update_Frequency: Continually
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -92.094423
East_Bounding_Coordinate: -78.847711
North_Bounding_Coordinate: 49.022606
South_Bounding_Coordinate: 40.954215
Access_Constraints: None
Use_Constraints:
The U.S. Department of Agriculture, Service Center Agencies should be acknowledged as the data source in products derived from these data.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Department of Agriculture, Service Center Agencies - National Geospatial Management Center
Contact_Address:
Address_Type: mailing
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 ArcGIS 10.0.5.4400
Data_Quality_Information:
Logical_Consistency_Report:
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.
Completeness_Report: Data is as complete as possible
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Data was created using the accuracy of the ESRI Arc platform and positional accuracy of USGS topoquads and the latest aerial imagery.
Lineage:
Process_Step:
Process_Description:
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 included with each WBD order.
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 64
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: NAD 1983 Hotine Oblique Mercator Azimuth Natural Origin
Oblique_Mercator:
Scale_Factor_at_Center_Line: 0.9996
Oblique_Line_Azimuth:
Azimuthal_Angle: 337.25556
Azimuth_Measure_Point_Longitude: -86.0
Latitude_of_Projection_Origin: 45.30916666666666
False_Easting: 2546731.496
False_Northing: -4354009.816
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.0001
Ordinate_Resolution: 0.0001
Planar_Distance_Units: meter
Geodetic_Model:
Horizontal_Datum_Name: D North American 1983
Ellipsoid_Name: GRS 1980
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257222101
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: wbdhu8_a_mi
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: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: AreaAcres
Attribute_Definition: Area, shown in acres
Attribute_Definition_Source: USDA
Attribute:
Attribute_Label: AreaSqKm
Attribute_Definition: Area, shown in square kilometers
Attribute_Definition_Source: USDA
Attribute:
Attribute_Label: States
Attribute_Definition: States included in the 8-digit hydrologic unit
Attribute_Definition_Source: USDA
Attribute:
Attribute_Label: HUC8
Attribute_Definition: Unique 8-digit hydrologic unit code
Attribute_Definition_Source: USDA
Attribute:
Attribute_Label: Name
Attribute_Definition: Subbasin name
Attribute_Definition_Source: USDA
Attribute:
Attribute_Label: Shape.STArea()
Attribute:
Attribute_Label: Shape.STLength()
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 varying sizes for the different hydrologic unit levels: 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 2-digit Region number that contains the 4-, 6-, and 8-digit hydrologic units. Each hydrologic unit has a unique hydrologic code.
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Department of Agriculture, Service Center Agencies - National Geospatial Management Center
Contact_Address:
Address_Type: mailing
Address: 501 W. Felix St, Bldg 23
City: Fort Worth
State_or_Province: Texas
Postal_Code: 76115
Distribution_Liability:
Although these data have been processed successfully on a computer system, no warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data to evaluate data set limitations, restrictions or intended use. The State of Michigan shall not be held liable for improper or incorrect use of the data described and/or contained herein.
Metadata_Reference_Information:
Metadata_Date: 20130325
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Center for Shared Solutions and Technology Partnerships, Michigan Dept of Technology, Management, and Budget
Contact_Person: Bob Reszka
Contact_Position: Resource Analyst
Contact_Address:
Address_Type: mailing
Address: P.O. Box 30026
City: Lansing
State_or_Province: MI
Postal_Code: 48933
Contact_Voice_Telephone: 517-373-7910
Contact_Facsimile_Telephone: 517-373-2939
Contact_Electronic_Mail_Address: [email protected]
Contact_Instructions: <http://www.Michigan.gov/cgi>
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Generated by mp version 2.9.12 on Fri Sep 15 11:53:19 2017