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Lakes - Cook Inlet Basin - National Water-Quality Assessment Program

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Tim Brabets
Publication_Date: 1998
Publication_Time:
Title:
Lakes - Cook Inlet Basin - National Water-Quality Assessment Program
Edition:
Geospatial_Data_Presentation_Form:
Series_Name Issue_Identification
Publication_Information:
Publication_Place: Anchorage
Publisher: USGS
Other_Citation_Details:
Online_Linkage: <URL:https://agdc.usgs.gov/data/usgs/water>

Description:

Abstract:

nawqa_lakes is a polygon coverage of lakes greater than 20 acres that are
located in the Cook Inlet National Water-Quality Assessment (NAWQA) study unit.
The Cook Inlet Basin is located in southcentral Alaska. The coverage was
created using 1:2,000,000 digital line graphs (DLGs).

Purpose:

The purpose of nawqa_lakes is to provide a general overview of the number of
lakes greater than 20 acres that are located in the Cook Inlet NAWQA study
unit. This coverage, along with other coverages of the Cook Inlet Basin will
be used to determine water-quality sampling locations.

Limitations_of_Data:

The coverage was created from 1:2,000,000 digital line graphs. Thus, caution
should be used if the coverage is used at smaller scales.

Entity_and_Attribute_Overview:

Standard items are found in the polygon attribute data with the exception of the
item MIN. MIN = 100 indicates the polygon is a lake. Standard items are found in
the arc attribute table with the exception of the item LINECODE. LINECODE = L
indicates that the arc is part of the lake.

Procedures_Used:

Coverage was created by Alaska Department of Natural Resources (ADNR)
and USGS personnel using USGS 1:2,000,000 digital line graphs (DLG) datasets.
Techniques are described by Domaratz and others (1982). Only those polygons
representing lakes having an area greater than 20 acres were kept.

Revisions:

None.

Reviews_Applied_to_Data:

Documentation was reviewed by Roy Glass. An editorial review of the
documentation was done by Liska Snyder.

Related_Spatial_and_Tabular_Data_Sets:

None.

References_Cited:

Domaratz, M.A., Hallam, C.A., Schmidt, W.E., and Calkins, H.W., 1982, Digital
line graphs from 1:2,000,000-scale maps (USGS digital cartographic standards):
U.S. Geological Survey Circular 895-D, 40 p.

Notes:

None.

Currentness_Reference:

Maintenance_and_Update_Frequency:

No updates are planned.

Access_Constraints:

Point_of_Contact: USGS-WRD

Data_Set_Credit:

Alaska Department of Natural Resources, EROS field office, Anchorage, AK

Completeness_Report:

Coverage includes only those lakes greater than 20 acres.

Horizontal_Positional_Accuracy_Report:

Unknown.

Vertical_Positional_Accuracy_Report:

Cloud_Cover:

Abstract:
Purpose:
Supplemental_Information:

Procedures_Used: Revisions: Reviews_Applied_to_Data: Related_Spatial_and_Tabular_Data_Sets: Other_References_Cited: Notes:

Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 19970620
Time_of_Day: 1200
Currentness_Reference:
Status:
Progress: Complete
Maintenance_and_Update_Frequency:
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -154.78977481
East_Bounding_Coordinate: -146.16819801
North_Bounding_Coordinate: 63.45064362
South_Bounding_Coordinate: 58.59213757
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: lakes, Cook Inlet, NAWQA, AKWRD
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Southcentral Alaska, Cook Inlet Basin
Stratum:
Stratum_Keyword_Thesaurus: None
Stratum_Keyword: None
Temporal:
Temporal_Keyword_Thesaurus: None
Temporal_Keyword: None
Access_Constraints:
Use_Constraints:
Point_of_Contact:

Data_Set_Credit:
Security_Information:
Security_Classification_System: None
Security_Classification: Unclassified
Security_Handling_Description: None
Native_Data_Set_Environment: dgux, 5.4R3.10, AViiON UNIX, ARC/INFO version 7.0.4


Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: See Entity_Attribute_Information
Quantitative_Attribute_Accuracy_Assessment:
Attribute_Accuracy_Value: See Explanation
Attribute_Accuracy_Explanation:
Attribute accuracy is described, where present, with each attribute defined in the Entity and Attribute Section.
Logical_Consistency_Report: Polygon and chain-node topology present.
Completeness_Report:

Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Quantitative_Horizontal_Positional_Accuracy_Assessment:
Horizontal_Positional_Accuracy_Value: 100 meters
Horizontal_Positional_Accuracy_Explanation: Resolution as reported
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator:
Publication_Date:
Title:
Source_Scale_Denominator: 2,000,000
Type_of_Source_Media:
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:
Source_Currentness_Reference:
Source_Citation_Abbreviation:
Source_Contribution:
Process_Step:
Process_Description: APPEND LAKES_ALL POLY ALL
Source_Used_Citation_Abbreviation: None
Process_Date: 19921014
Process_Time: 1417
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: BUILD LAKES_ALL LINE
Source_Used_Citation_Abbreviation: None
Process_Date: 19921014
Process_Time: 1422
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: ARCEDIT /ELIAS/GREQ/92002/COVERS/LAKES_ALL
Source_Used_Citation_Abbreviation: None
Process_Date: 19921014
Process_Time: 1428
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: ARCEDIT /ELIAS/GREQ/92002/COVERS/LAKES_ALL
Source_Used_Citation_Abbreviation: None
Process_Date: 19921014
Process_Time: 1451
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: ARCEDIT /ELIAS/GREQ/92002/COVERS/LAKES_ALL
Source_Used_Citation_Abbreviation: None
Process_Date: 19921014
Process_Time: 1512
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: BUILD LAKES_ALL POLY
Source_Used_Citation_Abbreviation: None
Process_Date: 19921014
Process_Time: 1527
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: LABELERRORS LAKES_ALL
Source_Used_Citation_Abbreviation: None
Process_Date: 19921014
Process_Time: 1535
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: ARCEDIT /ELIAS/GREQ/92002/COVERS/LAKES_ALL
Source_Used_Citation_Abbreviation: None
Process_Date: 19921015
Process_Time: 0829
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: BUILD LAKES_ALL POLY
Source_Used_Citation_Abbreviation: None
Process_Date: 19921015
Process_Time: 0835
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: LABELERRORS LAKES_ALL
Source_Used_Citation_Abbreviation: None
Process_Date: 19921015
Process_Time: 0835
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: COPY /ELIAS/GREQ/92002/COVERS/LAKES_ALL LAKES
Source_Used_Citation_Abbreviation: None
Process_Date: 19921015
Process_Time: 0905
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: POLYGRID /DB/INV/2MIL/LAKES LAKES_GRID MIN
Source_Used_Citation_Abbreviation: None
Process_Date: 19921015
Process_Time: 1108
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: POLYGRID /DB/INV/2MIL/LAKES LAKES_GRID
Source_Used_Citation_Abbreviation: None
Process_Date: 19921027
Process_Time: 1346
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: POLYGRID /DB/INV/2MIL/LAKES LAKES_GRID MIN
Source_Used_Citation_Abbreviation: None
Process_Date: 19921027
Process_Time: 1403
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: COPY /DB/INV/2MIL/LAKES LAKES
Source_Used_Citation_Abbreviation: None
Process_Date: 19930210
Process_Time: 1141
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: COPY /AFOE/AKBASE/USGS/LAKES LAKES
Source_Used_Citation_Abbreviation: None
Process_Date: 19930310
Process_Time: 1717
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: INDEX LAKES
Source_Used_Citation_Abbreviation: None
Process_Date: 19930316
Process_Time: 1758
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: INDEX LAKES
Source_Used_Citation_Abbreviation: None
Process_Date: 19930505
Process_Time: 1037
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: PROJECTDEFINE COVER LAKES
Source_Used_Citation_Abbreviation: None
Process_Date: 19940719
Process_Time: 1556
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: TBRABETS COPY /HOME/BINNIAN/USER2/AFOXTRAS/ALASKA/LAKES
Source_Used_Citation_Abbreviation: None
Process_Date: 19950329
Process_Time: 1527
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: TBRABETS COPY /HOME/TBRABETS/LAKES
Source_Used_Citation_Abbreviation: None
Process_Date: 19950329
Process_Time: 1529
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: TBRABETS COPY /PROJECTS/PROJ_SLED/AK.LAKE/LAKES
Source_Used_Citation_Abbreviation: None
Process_Date: 19970507
Process_Time: 1310
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: TBRABETS ARCEDIT /PROJECTS/PROJ_SLED/NAWQA/NAWQA_LAKES
Source_Used_Citation_Abbreviation: None
Process_Date: 19970507
Process_Time: 1427
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: TBRABETS BUILD NAWQA_LAKES POLY
Source_Used_Citation_Abbreviation: None
Process_Date: 19970507
Process_Time: 1432
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: TBRABETS DOCUMENT NAWQA_LAKES CREATE TBRABETS
Source_Used_Citation_Abbreviation: None
Process_Date: 19970620
Process_Time: 1322
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: TBRABETS ARCEDIT /PROJECTS/PROJ_SLED/NAWQA/NAWQA_LAKES
Source_Used_Citation_Abbreviation: None
Process_Date: 19970625
Process_Time: 1233
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: TBRABETS BUILD NAWQA_LAKES POLY
Source_Used_Citation_Abbreviation: None
Process_Date: 19970625
Process_Time: 1234
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: TBRABETS ARCEDIT /PROJECTS/PROJ_SLED/NAWQA/NAWQA_LAKES
Source_Used_Citation_Abbreviation: None
Process_Date: 19970711
Process_Time: 0707
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: TBRABETS BUILD NAWQA_LAKES POLY
Source_Used_Citation_Abbreviation: None
Process_Date: 19970711
Process_Time: 0707
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: TBRABETS ARCEDIT /PROJECTS/PROJ_SLED/NAWQA/NAWQA_LAKES
Source_Used_Citation_Abbreviation: None
Process_Date: 19971015
Process_Time: 0758
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: TBRABETS DOCUMENT NAWQA_LAKES UPDATE TBRABETS
Source_Used_Citation_Abbreviation: None
Process_Date: 19980116
Process_Time: 1411
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: TBRABETS DOCUMENT NAWQA_LAKES UPDATE TBRABETS
Source_Used_Citation_Abbreviation: None
Process_Date: 19980120
Process_Time: 1435
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: TBRABETS COPY /PROJECTS/PROJ_SLED/NAWQA/NAWQA_LAKES
Source_Used_Citation_Abbreviation: None
Process_Date: 19980121
Process_Time: 1009
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: TBRABETS DOCUMENT NAWQA_LAKES UPDATE TBRABETS
Source_Used_Citation_Abbreviation: None
Process_Date: 19980122
Process_Time: 0753
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: TBRABETS DOCUMENT NAWQA_LAKES UPDATE TBRABETS
Source_Used_Citation_Abbreviation: None
Process_Date: 19980131
Process_Time: 0834
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: TBRABETS LABELERRORS NAWQA_LAKES
Source_Used_Citation_Abbreviation: None
Process_Date: 19980227
Process_Time: 1026
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: TBRABETS NODEERRORS NAWQA_LAKES DANGLE
Source_Used_Citation_Abbreviation: None
Process_Date: 19980227
Process_Time: 1026
Source_Produced_Citation_Abbreviation: None
Process_Step:
Process_Description: TBRABETS DOCUMENT NAWQA_LAKES UPDATE TBRABETS
Source_Used_Citation_Abbreviation: None
Process_Date: 19980227
Process_Time: 1054
Source_Produced_Citation_Abbreviation: None
Cloud_Cover: Unknown


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: 339
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: String
Point_and_Vector_Object_Count: 381
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 340


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: 55
Longitude_of_Central_Meridian: -154
Latitude_of_Projection_Origin: 50
False_Easting: 0.00000
False_Northing: 0.00000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 1.0
Ordinate_Resolution: 1.0
Planar_Distance_Units: METERS
Geodetic_Model:
Horizontal_Datum_Name: Unknown
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: NAWQA_LAKES.PAT
Entity_Type_Definition: Polygon attribute table
Entity_Type_Definition_Source: Digital line graphs
Attribute:
Attribute_Label: -
Attribute_Definition: Polygon attribute table
Attribute_Definition_Source: Digital line graphs
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -
Enumerated_Domain_Value_Definition:
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: AREA
Attribute_Definition: Area of poly/region in square coverage units
Attribute_Definition_Source: Computed
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Positive real numbers
Enumerated_Domain_Value_Definition:
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: PERIMETER
Attribute_Definition: Perimeter of poly/region in coverage units
Attribute_Definition_Source: Computed
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Positive real numbers
Enumerated_Domain_Value_Definition:
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: NAWQA_LAKES#
Attribute_Definition: Internal feature number
Attribute_Definition_Source: Computed
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sequential unique positive integer
Enumerated_Domain_Value_Definition:
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: NAWQA_LAKES-ID
Attribute_Definition: User-assigned feature number
Attribute_Definition_Source: User-defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Integer
Enumerated_Domain_Value_Definition:
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: MIN
Attribute_Definition: MIN determines whether or not the polygon is a lake
Attribute_Definition_Source: Alaska Department of Natural Resources
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: MIN=100, Polygon is a lake
Enumerated_Domain_Value_Definition:
Enumerated_Domain_Value_Definition_Source:
Detailed_Description:
Entity_Type:
Entity_Type_Label: NAWQA_LAKES.AAT
Entity_Type_Definition: Arc attribute table
Entity_Type_Definition_Source: Alaska Department of Natural Resources
Attribute:
Attribute_Label: -
Attribute_Definition: Arc attribute table
Attribute_Definition_Source: Alaska Department of Natural Resources
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -
Enumerated_Domain_Value_Definition:
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: FNODE#
Attribute_Definition: Internal number of from-node
Attribute_Definition_Source: Computed
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sequential unique positive integer
Enumerated_Domain_Value_Definition:
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: TNODE#
Attribute_Definition: Internal number of to-node
Attribute_Definition_Source: Computed
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sequential unique positive integer
Enumerated_Domain_Value_Definition:
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: LPOLY#
Attribute_Definition: Internal number of poly to left of arc
Attribute_Definition_Source: Computed
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sequential unique positive integer
Enumerated_Domain_Value_Definition:
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: RPOLY#
Attribute_Definition: Internal number of poly to right of arc
Attribute_Definition_Source: Computed
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sequential unique positive integer
Enumerated_Domain_Value_Definition:
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: LENGTH
Attribute_Definition: Length of arc in coverage units
Attribute_Definition_Source: Computed
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Positive real numbers
Enumerated_Domain_Value_Definition:
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: NAWQA_LAKES#
Attribute_Definition: Internal feature number
Attribute_Definition_Source: Computed
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sequential unique positive integer
Enumerated_Domain_Value_Definition:
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: NAWQA_LAKES-ID
Attribute_Definition: User-assigned feature number
Attribute_Definition_Source: User-defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Integer
Enumerated_Domain_Value_Definition:
Enumerated_Domain_Value_Definition_Source:
Attribute:
Attribute_Label: LINECODE
Attribute_Definition: LINECODE indicates whether or not the arc is part of lake
Attribute_Definition_Source: Alaska Department of Natural Resources
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: LINECODE=L indicates that the arc is part of the lake
Enumerated_Domain_Value_Definition:
Enumerated_Domain_Value_Definition_Source:
Overview_Description:
Entity_and_Attribute_Overview:
Entity_and_Attribute_Detail_Citation: Not Available


Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Tim Brabets
Contact_Organization: USGS-WRD
Contact_Position: Hydrologist
Contact_Address:
Address_Type: mailing address
Address: 4230 University Drive, Suite 201
City: Anchorage
State_or_Province: AK
Postal_Code: 99508
Country: USA
Contact_Voice_Telephone: 907-786-7105
Contact_Facsimile_Telephone: 907-786-7150
Contact_Electronic_Mail_Address: tbrabets@usgs.gov
Hours_of_Service: 8:00 - 4:30 AST
Resource_Description: Alaska Geospatial Data Clearinghouse
Distribution_Liability: No liability is assumed
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ARCG ARC/INFO Generate format
Format_Version_Number: 7.0.4
File_Decompression_Technique: gzip
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <URL:https://agdcftp1.wr.usgs.gov/pub/usgs/water/nawqa_lakes.tar.gz>
Fees: Free


Metadata_Reference_Information:
Metadata_Date: 19980227
Metadata_Contact:

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: Local Time
Metadata_Security_Information:
Metadata_Security_Classification_System: None
Metadata_Security_Classification: Unclassified
Metadata_Security_Handling_Description: None


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