Metadata Hydrologic Unit Boundaries
USGS Hydrologic Unit Boundaries of the Conterminous United States in BASINS (accounting unit, cataloging unit)
- Identification Information
- Data Quality Information
- Spatial Reference Information
- Entity and Attribute Information
- Distribution Information
- Metadata Reference Information
- Text Version
- Identification_Information:
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- Citation:
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- Citation_Information:
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- Originator: Environmental Protection Agency, Office of Water/OST
- Publication_Date: 1998
- Title: Hydrologic Unit Boundaries of the Conterminous United States in BASINS
- Online_Linkage:
- USGS huc250k
- EPA ESDLS
BASINS model and data
- Description:
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- Abstract:
- This metadata describes various delineations of watershed boundaries being stored in the EPA Spatial Data Library System (ESDLS). These delineations are based on the Hydrologic Unit Maps published by the U.S. Geological Survey Office of Water Data Coordination, together with the list descriptions and name of region, subregion, accounting units, and cataloging units. This metadata set describes the spatial data sets as they exist after downloading the data from ESDLS.
The changes made to the data sets from ESDLS are as follows:
- Reprojected the ARC/INFO coverages to a geographic projection.
- Derived accounting unit and cataloging unit layers only from original data.
- Converted ARC/INFO coverages to Arcview Shapefiles with ARCSHAPE
command in Environmental Systems Research Institute (ESRI) GIS software.
- Purpose:
- These data sets are intended to support watershed analysis in BASINS.
- Supplemental_Information:
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References_Cited:
U.S. Geological Survey, 1994. Metadata for Hydrologic units maps of the
Conterminous United States, 1:250,000-scale (nominal), ARC/INFO format.U.S. Geological Survey, 1990. Land Use and Land Cover Digital Data from
1:250,000- and 1:100,000-Scale Maps. Data Users Guide 4, 33 pp, Reston, Virginia.U.S. Environmental Protection Agency, 1996. Metadata for Hydrologic Unit
Boundaries of the Conterminous United States, 1:250,000-scale (nominal), ARC/INFO Format.Limitations_of_Data:
These data were originally digitized at a scale of 1:250,000 with some portions of coverage at 1:100,000- and 1:2 million scale. Limitations of the data strictly revolve around this scale input. Use of these boundaries with larger scale data (i.e. 1:24k hydrography) is not recommended as it would be beyond the resolution capabilities of the data set.
- Time_Period_of_Content:
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- Time_Period_Information:
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- Range_of_Dates/Times:
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- Beginning_Date: Unknown
- Ending_Date: Unknown
- Currentness_Reference: Publication date
- Status:
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- Progress: Complete
- Maintenance_and_Update_Frequency: As needed
- Spatial_Domain:
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- Bounding_Coordinates:
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- West_Bounding_Coordinate: -125.00
- East_Bounding_Coordinate: -66.00
- North_Bounding_Coordinate: 50.00
- South_Bounding_Coordinate: 24.00
- Keywords:
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- Theme:
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- Theme_Keyword_Thesaurus: None
- Theme_Keyword: CATALOGING UNITS
- Place:
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- Place_Keyword_Thesaurus: Geographic Names Information System
- Place_Keyword: Conterminous United States of America (CONUS)
- Place_Keyword: Alabama AL
- Place_Keyword: Arizona AZ
- Place_Keyword: Arkansas AR
- Place_Keyword: California CA
- Place_Keyword: Colorado CO
- Place_Keyword: Connecticut CT
- Place_Keyword: Delaware DE
- Place_Keyword: District of Columbia DC
- Place_Keyword: Florida FL
- Place_Keyword: Georgia GA
- Place_Keyword: Idaho ID
- Place_Keyword: Illinois IL
- Place_Keyword: Indiana IN
- Place_Keyword: Iowa IA
- Place_Keyword: Kansas KS
- Place_Keyword: Kentucky KY
- Place_Keyword: Louisiana LA
- Place_Keyword: Maine ME
- Place_Keyword: Maryland MD
- Place_Keyword: Massachusetts MA
- Place_Keyword: Michigan MI
- Place_Keyword: Minnesota MN
- Place_Keyword: Mississippi MS
- Place_Keyword: Missouri MO
- Place_Keyword: Montana MT
- Place_Keyword: Nebraska NE
- Place_Keyword: Nevada NV
- Place_Keyword: New Hampshire NH
- Place_Keyword: New Jersey NJ
- Place_Keyword: New Mexico NM
- Place_Keyword: New York NY
- Place_Keyword: North Carolina NC
- Place_Keyword: North Dakota ND
- Place_Keyword: Ohio OH
- Place_Keyword: Oklahoma OK
- Place_Keyword: Oregon OR
- Place_Keyword: Pennsylvania PA
- Place_Keyword: Rhode Island RI
- Place_Keyword: South Carolina SC
- Place_Keyword: South Dakota SD
- Place_Keyword: Tennessee TN
- Place_Keyword: Texas TX
- Place_Keyword: Utah UT
- Place_Keyword: Vermont VT
- Place_Keyword: Virginia VA
- Place_Keyword: Washington WA
- Place_Keyword: West Virginia WV
- Place_Keyword: Wisconsin WI
- Place_Keyword: Wyoming WY
- Access_Constraints:
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None.
- Use_Constraints:
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None. Acknowledgement of the U.S. EPA would be appreciated.
- Native_Data_Set_Environment: Arcview Shapefiles on Windows 95 PC
- Data_Quality_Information:
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- Logical_Consistency_Report:
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Chain-node topology present.
- Completeness_Report:
- (See original metadata in References_Cited section under Supplemental Information)
- Lineage:
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- Process_Step:
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- Process_Description:
- An earlier version of this coverage (1.x) and was created from undocumented source materials.
- Process_Date: 1980 (late 1980's)
- Process_Step:
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- Process_Description: An entirely new version (2.0) made from known source files.
- Process_Date: 1994
- Spatial_Reference_Information:
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- Horizontal_Coordinate_System_Definition:
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- Geographic:
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- Latitude_Resolution: 0.0001
- Longitude_Resolution: 0.0001
- Geographic_Coordinate_Units: Decimal Degrees
- Geodetic_Model:
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- Horizontal_Datum_Name: North American Datum of 1983
- Ellipsoid_Name: Geodetic Reference System 80
- Semi-major_Axis: 6378137
- Denominator_of_Flattening_Ratio: 298.257
- Entity_and_Attribute_Information:
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- Detailed_Description:
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- Entity_Type:
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- Entity_Type_Label: ACC.DBF
- Entity_Type_Definition: HUC POLYGONS
- Entity_Type_Definition_Source: Assigned
- Attribute:
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- Attribute_Label: SHAPE
- Attribute_Definition: ArcView internal field
- Attribute_Definition_Source: Assigned
- Attribute_Domain_Values:
-
- Enumerated_Domain:
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- Enumerated_Domain_Value: 12
- Enumerated_Domain_Value_Definition: character ID value
- Enumerated_Domain_Value_Definition_Source: Assigned
- Attribute:
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- Attribute_Label: AREA
- Attribute_Definition: Area of polygon in square coverage units
- Attribute_Definition_Source: Computed
- Attribute_Domain_Values:
-
- Enumerated_Domain:
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- Enumerated_Domain_Value: 12
- Enumerated_Domain_Value_Definition: Floating value
- Enumerated_Domain_Value_Definition_Source: Assigned
- Attribute:
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- Attribute_Label: PERIMETER
- Attribute_Definition: Perimeter of polygon in coverage units
- Attribute_Definition_Source: Computed
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: 12
- Enumerated_Domain_Value_Definition: Floating value
- Enumerated_Domain_Value_Definition_Source: Assigned
- Attribute:
-
- Attribute_Label: ACC_
- Attribute_Definition: ArcInfo internal field
- Attribute_Definition_Source: Computed
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: 10
- Enumerated_Domain_Value_Definition: character ID value
- Enumerated_Domain_Value_Definition_Source: Assigned
- Attribute:
-
- Attribute_Label: ACC_ID
- Attribute_Definition: ArcInfo internal field
- Attribute_Definition_Source: Assigned
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: 10
- Enumerated_Domain_Value_Definition: character ID value
- Enumerated_Domain_Value_Definition_Source: Assigned
- Attribute:
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- Attribute_Label: ACC
- Attribute_Definition: HYDROLOGIC ACCOUNTING UNIT ID
- Attribute_Definition_Source: GIRAS DATA
- Attribute_Domain_Values:
-
- Enumerated_Domain:
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- Enumerated_Domain_Value: 6
- Enumerated_Domain_Value_Definition: character ID value
- Enumerated_Domain_Value_Definition_Source: Assigned
- Attribute:
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- Attribute_Label: NAME
- Attribute_Definition: Hydrologic Unit Name
- Attribute_Definition_Source: U.S. Geological Survey as FIPS standard
- Attribute_Domain_Values:
-
- Enumerated_Domain:
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- Enumerated_Domain_Value: 40
- Enumerated_Domain_Value_Definition: character ID value
- Enumerated_Domain_Value_Definition_Source: Assigned
- Detailed_Description:
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- Entity_Type:
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- Entity_Type_Label: CAT.SHP
- Entity_Type_Definition: HUC POLYGONS
- Entity_Type_Definition_Source: Assigned
- Attribute:
-
- Attribute_Label: SHAPE
- Attribute_Definition: ArcView internal field
- Attribute_Definition_Source: Assigned
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: 12
- Enumerated_Domain_Value_Definition: Floating value
- Enumerated_Domain_Value_Definition_Source: Assigned
- Attribute:
-
- Attribute_Label: AREA
- Attribute_Definition: Area of polygon in square coverage units
- Attribute_Definition_Source: Computed
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: 12
- Enumerated_Domain_Value_Definition: Floating value
- Enumerated_Domain_Value_Definition_Source: Assigned
- Attribute:
-
- Attribute_Label: PERIMETER
- Attribute_Definition: Perimeter of polygon in coverage units
- Attribute_Definition_Source: Computed
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: 12
- Enumerated_Domain_Value_Definition: Floating value
- Enumerated_Domain_Value_Definition_Source: Assigned
- Attribute:
-
- Attribute_Label: CAT_
- Attribute_Definition: ArcInfo internal field
- Attribute_Definition_Source: Assigned
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: 12
- Enumerated_Domain_Value_Definition: character ID value
- Enumerated_Domain_Value_Definition_Source: Assigned
- Attribute:
-
- Attribute_Label: CAT_ID
- Attribute_Definition: ArcInfo internal field
- Attribute_Definition_Source: Assigned
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: 12
- Enumerated_Domain_Value_Definition: character ID value
- Enumerated_Domain_Value_Definition_Source: Assigned
- Attribute:
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- Attribute_Label: HUC
- Attribute_Definition: HYDROLOGIC UNIT ID
- Attribute_Definition_Source: GIRAS DATA
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: 12
- Enumerated_Domain_Value_Definition: character ID value
- Enumerated_Domain_Value_Definition_Source: USGS
- Attribute:
-
- Attribute_Label: ACC
- Attribute_Definition: HYDROLOGIC ACCOUNTING UNIT ID
- Attribute_Definition_Source: GIRAS DATA
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: 12
- Enumerated_Domain_Value_Definition: character ID value
- Enumerated_Domain_Value_Definition_Source: USGS
- Attribute:
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- Attribute_Label: NAME
- Attribute_Definition: Hydrologic Unit Name
- Attribute_Definition_Source: U.S. Geological Survey as FIPS standard
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: 12
- Enumerated_Domain_Value_Definition: character ID value
- Enumerated_Domain_Value_Definition_Source: USGS
- Overview_Description:
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- Entity_and_Attribute_Overview:
- For definition of drainage basins, there are two principal tabular data elements of interest. The first, "HUC", stands for the Hydrologic Unit Code and includes the 8-digit cataloging unit as assigned to the basin polygon by the U.S. Geological Survey. The second item, "NAME", is provided with this data set to allow a user to perform a temporary join between the basin polygons and display or query basins based on their assigned text names rather than just the basin number (HUC).
- Entity_and_Attribute_Detail_Citation: See Supplemental_Information
- Distribution_Information:
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- Distributor:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization: USEPA/Office of Water/OST
- Contact_Address:
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- Address_Type: Mailing Address
- Address: 1200 Pennsylvania Ave., NW (4305T)
- City: Washington
- State_or_Province: District of Columbia
- Postal_Code: 20460
- Country: USA
- Contact_Voice_Telephone: 202-566-0400
- Contact_Facsimile_Telephone: 202-566-0409
- Contact_Electronic_Mail_Address: CEAM@epa.gov
- Distribution_Liability:
- Although these data have been processed successfully on a computer system at Tetra Tech, Inc., 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. This disclaimer applies both to individual use of the data and aggregate use with other data. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. The U.S. Environmental Protection Agency nor Tetra Tech, Inc. shall not be held liable for improper or incorrect use of the data described and/or contained herein.
- Standard_Order_Process:
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- Digital_Form:
-
- Digital_Transfer_Information:
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- Format_Name:
- Environmental Systems Research Institute (ESRI) ArcView Shapefile
- Digital_Transfer_Option:
-
- Online_Option:
-
- Computer_Contact_Information:
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- Network_Address:
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- Network_Resource_Name: Better Assessment Science Integrating Point and Non-point Sources (BASINS)
- Offline_Option:
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- Offline_Media: CD-ROM
- Recording_Format: ISO 9660
- Fees: None
- Ordering_Instructions:
- When requesting data by phone or mail, please inquire about spatial data sets that work with Better Assessment Science Integrating Point and Nonpoint Sources (BASINS). The BASINS web page has instructions for downloading datasets. It also has a link to The National Center for Environmental Publications and Information (NCEPI), from which BASINS CD-ROMs may be ordered. Each CD-ROM contains the BASINS v2.0 Application and this data set along with others covering the spatial extent of an EPA Region.
- Metadata_Reference_Information:
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- Metadata_Date: 20070611
- Metadata_Contact:
-
- Contact_Information:
-
- Contact_Organization_Primary:
-
- Contact_Organization: USEPA/OW/OST
- Contact_Address:
-
- Address_Type: Mailing Address
- Address: 1200 Pennsylvania Ave., NW (4305T)
- City: Washington
- State_or_Province: District of Columbia
- Postal_Code: 20460
- Country: USA
- Contact_Voice_Telephone: 202-566-0400
- Contact_Facsimile_Telephone: 202-566-0409
- Contact_Electronic_Mail_Address: CEAM@epa.gov
- Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
- Metadata_Standard_Version: 19940608
Generated by mpon Wed Sep 02 14:15:45 1998