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Alaska Hydrologic Units

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Robert Lamke
Publication_Date: Unpublished Material
Title: Alaska Hydrologic Units
Online_Linkage: <URL:http://agdc.usgs.gov/data/projects/anwr/anwr.html>
Description:
Abstract:
Hydrologic Unit Codes Map for the State of Alaska by Robert Lamke,
Timothy P. Brabets and Jacqueline McIntire.
Purpose:
This dataset provides a USGS hydrologic unit depiction for the State of Alaska.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 19941123
Currentness_Reference: Revised 1994
Status:
Progress: Reviewed 4/1/95
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: 157.5481
East_Bounding_Coordinate: -117.3596
North_Bounding_Coordinate: 67.5629
South_Bounding_Coordinate: 48.9035
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: HYDROLOGY
Theme_Keyword: HYDROLOGIC UNITS (HUC)
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Alaska
Access_Constraints: None
Use_Constraints: None, request that USGS be noted as the source.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Service, EROS Alaska Field Office
Contact_Person: Emily Binnian
Contact_Address:
Address_Type: mailing and physical address
Address: 4230 University Drive
City: Anchorage
State_or_Province: Alaska
Postal_Code: 99508-4664
Contact_Voice_Telephone: (907) 786-7020
Contact_Electronic_Mail_Address: binnian@usgs.gov
Native_Data_Set_Environment: Dgux, 5.4R3.10, AViion UNIX, ARC/INFO ver7.03

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: Not Known
Logical_Consistency_Report: Polygon and chain-node topology present
Completeness_Report: Unknown
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report: Unknown
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: United States Geological Survey
Publication_Date: Unpublished material
Title: Hydrologic Unit Codes (HUC) for State of Alaska
Type_of_Source_Media: Map
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 19950401
Source_Currentness_Reference: Map completion date
Source_Citation_Abbreviation: None
Source_Contribution: None
Process_Step:
Process_Description:
Bob Lamke revised HUC boundaries on 1:250000 quads for State of Alaska. Revised boundaries were digitized, edited and quads joined to complete HUC coverage for State of Alaska. HUC coverage was joined with 1:1,000,000 coverage of State of Alaska. HUC numbers (HUC_CODES) and plotting notation (LABEL) were added to HUC coverage. Plotting notations (LINE) was added to identify Cataloging Unit, Subregional, Regional and International boundaries.
Process_Date: 19960905

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 1262
SDTS_Point_and_Vector_Object_Type: String
Point_and_Vector_Object_Count: 3750
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 1263

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Albers Conical Equal Area
Albers_Conical_Equal_Area:
Standard_Parallel: 55
Standard_Parallel: 65
Longitude_of_Central_Meridian: -154
Latitude_of_Projection_Origin: 50
False_Easting: 0
False_Northing: 0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: Coordinate pair
Coordinate_Representation:
Abscissa_Resolution: Unknown
Ordinate_Resolution: Unknown
Planar_Distance_Units: Meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1927
Ellipsoid_Name: Clarke 1866
Semi-major_Axis: 6378206.4
Denominator_of_Flattening_Ratio: 294.98

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: HUC_CODE
Entity_Type_Definition:
Hydrologic Unit Code for each polygon within map of State of Alaska
Entity_Type_Definition_Source: U.S. Geological Survey
Entity_Type:
Entity_Type_Label: LABEL
Entity_Type_Definition: 0 & 1 coding for plotting HUC numbers on map
Entity_Type_Definition_Source: U.S. Geological Survey
Entity_Type:
Entity_Type_Label: LINE
Entity_Type_Definition: 1,2,3,4, coding for identifying boundaries
Entity_Type_Definition_Source: U.S. Geological Survey
Overview_Description:
Entity_and_Attribute_Overview:
Line coding, hydrologic unit,
Entity_and_Attribute_Detail_Citation: None

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
USGS EROS Alaska Field Office, Alaska Geospatial Data Clearinghouse
Contact_Person:
Contact_Address:
Address_Type: mailing and physical address
Address: 4230 University Drive
City: Anchorage
State_or_Province: Alaska
Postal_Code: 99508-4664
Contact_Voice_Telephone: (907) 786-7020
Distribution_Liability:
Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the accuracy of 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 strongly recommended that these data are directly acquired from a U.S. Geological Survey server, and not indirectly through other sources which may have changed the data in some way. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and/or contained herein.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name:
gzip-compressed TAR-archive of ARC/INFO export (.e00) file. ARC/INFO export compression = NONE
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<URL:http://agdcftp1.wr.usgs.gov/pub/projects/anwr/tar_files/akhuc.tar.gz>
Fees: None

Metadata_Reference_Information:
Metadata_Date: 19971001
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
USGS Biological Resources Div., Alaska Biological Science Center
Contact_Person: David C. Douglas
Contact_Address:
Address_Type: mailing address
Address: 1011 East Tudor Road
City: Anchorage
State_or_Province: Alaska
Postal_Code: 99503
Country: USA
Contact_Voice_Telephone: 907-786-3512
Contact_Electronic_Mail_Address: david_douglas@usgs.gov
Contact_Instructions:
The USGS/BRD Alaska Biological Science Center will be making an effort to keep the information provided in these metadata records current. Please send corrections, additions and suggestions for improvement to David Douglas at the above address.
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: June 8, 1994


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URL: http://agdc.usgs.gov/data/projects/anwr/metadata/akhuc.html
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Page Last Modified: Tuesday, 05-Mar-2013 12:08:29 AKST