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Hydrologic units maps of the Conterminous United States

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Steeves, Peter and Douglas Nebert
Publication_Date: 19940101
Title: Hydrologic units maps of the Conterminous United States
Edition:
Geospatial_Data_Presentation_Form: maps
Series_Information:
Series_Name:
Issue_Identification:
Publication_Information:
Publication_Place: Reston, Virginia
Publisher: USGS
Other_Citation_Details:
Online_Linkage: http://water.usgs.gov/lookup/getspatial?huc250k
Description:
Abstract:
The Geographic Information Retrieval and Analysis System (GIRAS) was developed in the mid 70s to put into digital form a number of data layers which were of interest to the USGS. One of these data layers was the Hydrologic Units. The map is 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 unit. The hydrologic units are encoded with an eight- digit number that indicates the hydrologic region (first two digits), hydrologic subregion (second two digits), accounting unit (third two digits), and cataloging unit (fourth two digits). The data produced by GIRAS was originally collected at a scale of 1: 250K. Some areas, notably major cities in the west, were recompiled at a scale of 1: 100K. In order to join the data together and use the data in a geographic information system (GIS) the data were processed in the ARC/INFO GUS software package. Within the GIS, the data were edge matched and the neatline boundaries between maps were removed to create a single data set for the conterminous United States. This data set was compiled originally to provide the National Water Quality Assessment (NAWQA) study units with an intermediate- scale river basin boundary for extracting other GIS data layers. The data can also be used for illustration purposes at intermediate or small scales (1:250,000 to 1:2 million). [Summary provided by EPA]
Purpose:
Not Available
Supplemental_Information:
Not Available
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: -127.91
East_Bounding_Coordinate: -65.32
North_Bounding_Coordinate: 48.29
South_Bounding_Coordinate: 22.87
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD PLATFORM
Theme_Keyword_Thesaurus: PROJECT
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > TERRESTRIAL ECOSYSTEMS > WETLANDS
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > DRAINAGE
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > HYDROPATTERN
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > LAKES
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > RIVERS/STREAMS
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > TOTAL SURFACE WATER
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > WATER CHANNELS
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > WATERSHED CHARACTERISTICS
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > WETLANDS
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > AQUATIC ECOSYSTEMS > WETLANDS
Theme_Keyword: MAPS
Theme_Keyword: ESIP > EARTH SCIENCE INFORMATION PARTNERS PROGRAM
Theme_Keyword: NAWQA > NATIONAL WATER QUALITY ASSESSMENT PROGRAM
Theme_Keyword: C-MAP > CLEAN AIR MAPPING AND ANALYSIS PROGRAM
Theme_Keyword: Gis
Theme_Keyword: Hydrologic Units
Theme_Keyword: Regions
Theme_Keyword: Rivers
Theme_Keyword: Hydrology
Theme_Keyword: Fresh Water
Theme_Keyword: Drainage Basins
Theme_Keyword: BIOTA
Theme_Keyword: GEOSCIENTIFIC INFORMATION
Theme_Keyword: INLAND WATERS
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA
Access_Constraints: Not Available
Use_Constraints:
These data were 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.
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The data produced by the Geographic Information Retrieval and Analysis System (GIRAS) was originally collected at a scale of 1:250K. Some areas, notably major cities in the west, were recompiled at a scale of 1:100K. In order to join the data together and use the data in a geographic information system (GIS) the data were processed in the ARC/INFO GUS software package. Within the GIS, the data were edge matched and the neatline boundaries between maps were removed to create a single data set for the conterminous United States. In addition, quality control was performed via AMLs in ArcInfo, revisions were made, and peer review was performed. See FGDC HYDRO metadata for more information. The data was originally obtained as digital versions of the 1:250,000 or 1:100,000 USGS quadrangles. The quadrangles were divided up into four regions of the U.S. Maps were converted into ArcInfo coverages using AMLs.
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
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Spatial_Reference_Information:
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: EPA/CAMD > Clean Air Markets Division, U.S. Environmental Protection Agency
Contact_Person: EPA CLEAN AIR MARKETS DIVISION
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: US EPA
Address: Clean Air Markets Division
Address: 1200 Pennsylvania Avenue, NW
Address: Mail Code 6204J
City: Washington
State_or_Province: DC
Postal_Code: 20460
Country: USA
Contact_Voice_Telephone: 202-564-9180
Contact_Electronic_Mail_Address: camdgis@epa.gov
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: DOI/USGS/WRD/GIS > Water Resources Maps and GIS Information, Water Resources Division, U.S. Geological Survey, U.S. Department of the Interior
Contact_Person: MARK WATER WEBSERVER TEAM - USGS NEGRI
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: USGS National Center
Address: Water Resources Division
Address: 12201 Sunrise Valley Drive
City: Reston
State_or_Province: VA
Postal_Code: 20192-0002
Country: USA
Contact_Address:
Address_Type: Mailing and Physical Address
Address: 12201 Sunrise Valley Drive, MS-445
City: Reston
State_or_Province: VA
Country: USA
Contact_Voice_Telephone: 703-648-4000;1-800-426-9000
Contact_Voice_Telephone: 703-648-5613
Contact_Facsimile_Telephone: 703-648-5295
Contact_Electronic_Mail_Address: h2oteam@usgs.gov
Contact_Electronic_Mail_Address: mnegri@usgs.gov
Resource_Description: HUC250k
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ArcInfo export format
Format_Name: SDTS
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.epa.gov/airmarkets/
Access_Instructions:
DATA CENTER URL
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://water.usgs.gov/lookup/getgislist
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://water.usgs.gov/GIS/metadata/usgswrd/XML/huc...
Access_Instructions:
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.epa.gov/airmarkets/
Access_Instructions:
FGDC metadata on &Hydrologic Units Maps&.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://water.usgs.gov/nawqa/
Access_Instructions:
Homepage of the National Water-Quality Assessment Program (NAWQA).
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
https://sherlock.ischool.berkeley.edu/geo_ir/PART1...
Access_Instructions:
Background information on Geographical Information Retrieval and Spatial Browsing.
Fees: No Fees
Fees: No Fees
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Metadata_Reference_Information:
Metadata_Date: 20021121
Metadata_Review_Date: 20110701
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: TYLER B. STEVENS
Contact_Position: DIF AUTHOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: NASA Goddard Space Flight Center
Address: Global Change Master Directory
City: Greenbelt
State_or_Province: MD
Postal_Code: 20771
Country: USA
Contact_Voice_Telephone: (301) 614-6898
Contact_Facsimile_Telephone: 301-614-5268
Contact_Electronic_Mail_Address: Tyler.B.Stevens@nasa.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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