Identification_Information: Citation: Citation_Information: Originator: Tim Brabets Publication_Date: 1998 Publication_Time: Title: Hydrologic Unit Boundaries of the Cook Inlet Basin Edition: Geospatial_Data_Presentation_Form: Series_Name Issue_Identification Publication_Information: Publication_Place: Anchorage Publisher: USGS Other_Citation_Details: Online_Linkage: Description: Abstract: nawqa_huc is a polygon coverage of hydrologic unit boundaries within the Cook Inlet Basin National Water-Quality Assessment (NAWQA)study area in southcentral Alaska. A hydrologic unit is a region or area bounded by a drainage divide and occupied by a drainage system. Each hydrologic unit (drainage area) boundary and an 8-digit name (huc.code) is from the report U.S. Geological Survey, 1987, Hydrologic unit map-1987-State of Alaska: U.S. Geological Survey map, 1 sheet. Purpose: The purpose of this coverage is to define the extent and boundaries of drainage systems within the Cook Inlet Basin. Supplemental_Information: Procedures_Used: The hydrologic unit boundaries were drawn on the 1:250000 paper quadrangle maps. The boundaries were then digitized and entered into ARC-INFO. Using ARC-EDIT procedures, the data were edited where appropriate and then combined into one coverage. Revisions: Reviews_Applied_to_Data: Boundaries drawn on the quadrangles were checked for accuracy by Bob Lamke and Tim Brabets. Documentation was reviewed by Roy Glass and Liska Snyder. Related_Spatial_and_Tabular_Data_Sets: Lamke, R.D., McIntire, J.A., and Brabets, T.P., 1995, Alaska Hydrologic Unit Codes, USGS written communication. Other_References_Cited: U.S. Geological Survey, 1987, Hydrologic unit map - 1987- State of Alaska: U.S. Geological Survey map, 1 sheet. Notes: None Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 19970424 Currentness_Reference: Current as of April, 1997 Status: Progress: Complete Maintenance_and_Update_Frequency: None planned. Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -154.85231357 East_Bounding_Coordinate: -146.05590611 North_Bounding_Coordinate: 63.79333933 South_Bounding_Coordinate: 58.43916036 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: NAWQA, Cook Inlet, Drainage Areas, Hydrologic Unit Codes, Alaska Place: Place_Keyword_Thesaurus: None Place_Keyword: Cook Inlet - Southcentral Alaska Stratum: Stratum_Keyword_Thesaurus: None Stratum_Keyword: None Temporal: Temporal_Keyword_Thesaurus: None Temporal_Keyword: None Access_Constraints: n/a Point_of_Contact USGS-WRD Use_Constraints: The coverage was developed using 1:250000 scale maps. Thus, users should be aware of the limitations if using smaller scales. Point_of_Contact: Data_Set_Credit: Bob Lamke drew the boundaries on the 1:250000 maps as a volunteer project after he retired in 1993. Mark Inghram (Alaska Department of Natural Resources), Jackie McIntire, and Tim Brabets digitized and edited the boundaries. 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: n/a Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The boundaries of the hydrologic units were drawn on 1:250,000 paper maps. A map was placed on the digitizing tablet and four tick marks were digitized. If the RMS error for the 4 tick marks was less than 0.005, the hydrologic unit boundaries were digitized. If the RMS error was greater than 0.005, the tick marks were digitized again until the RMS error was less than or equal to 0.005. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: n/a Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Publication_Date: Title: Source_Scale_Denominator: 250000 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: TBRABETS COPY /HOME/BOAT3/TBRABETS/TEMP/AK_HUC/AK_HUC Source_Used_Citation_Abbreviation: None Process_Date: 19951005 Process_Time: 1232 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: TBRABETS ARCEDIT /PROJECTS/PROJ_SLED/AK.COVS/NAWQA_HUC Source_Used_Citation_Abbreviation: None Process_Date: 19970423 Process_Time: 1453 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: TBRABETS COPY /PROJECTS/PROJ_SLED/AK.COVS/NAWQA_HUC Source_Used_Citation_Abbreviation: None Process_Date: 19970423 Process_Time: 1458 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: TBRABETS ARCEDIT /PROJECTS/PROJ_SLED/NAWQA/NAWQA_HUC Source_Used_Citation_Abbreviation: None Process_Date: 19970423 Process_Time: 1526 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: TBRABETS BUILD NAWQA_HUC POLY Source_Used_Citation_Abbreviation: None Process_Date: 19970424 Process_Time: 0730 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: TBRABETS ARCEDIT /PROJECTS/PROJ_SLED/NAWQA/NAWQA_HUC Source_Used_Citation_Abbreviation: None Process_Date: 19970424 Process_Time: 0927 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: TBRABETS BUILD NAWQA_HUC POLY Source_Used_Citation_Abbreviation: None Process_Date: 19970424 Process_Time: 0927 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: TBRABETS ARCEDIT /PROJECTS/PROJ_SLED/NAWQA/NAWQA_HUC Source_Used_Citation_Abbreviation: None Process_Date: 19970424 Process_Time: 1015 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: TBRABETS BUILD NAWQA_HUC POLY Source_Used_Citation_Abbreviation: None Process_Date: 19970424 Process_Time: 1016 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: TBRABETS DOCUMENT NAWQA_HUC DELETE TBRABETS Source_Used_Citation_Abbreviation: None Process_Date: 19970424 Process_Time: 1427 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: TBRABETS DOCUMENT NAWQA_HUC CREATE TBRABETS Source_Used_Citation_Abbreviation: None Process_Date: 19970424 Process_Time: 1511 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: TBRABETS DOCUMENT NAWQA_HUC UPDATE TBRABETS Source_Used_Citation_Abbreviation: None Process_Date: 19970424 Process_Time: 1525 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: TBRABETS DOCUMENT NAWQA_HUC UPDATE TBRABETS Source_Used_Citation_Abbreviation: None Process_Date: 19970425 Process_Time: 1528 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: TBRABETS DOCUMENT NAWQA_HUC UPDATE TBRABETS Source_Used_Citation_Abbreviation: None Process_Date: 19970428 Process_Time: 1500 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: TBRABETS DOCUMENT NAWQA_HUC UPDATE TBRABETS Source_Used_Citation_Abbreviation: None Process_Date: 19970620 Process_Time: 1422 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: TBRABETS DOCUMENT NAWQA_HUC UPDATE TBRABETS Source_Used_Citation_Abbreviation: None Process_Date: 19980116 Process_Time: 0908 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: TBRABETS DOCUMENT NAWQA_HUC UPDATE TBRABETS Source_Used_Citation_Abbreviation: None Process_Date: 19980120 Process_Time: 1429 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: TBRABETS COPY /PROJECTS/PROJ_SLED/NAWQA/NAWQA_HUC Source_Used_Citation_Abbreviation: None Process_Date: 19980121 Process_Time: 1003 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: TBRABETS DOCUMENT NAWQA_HUC UPDATE TBRABETS Source_Used_Citation_Abbreviation: None Process_Date: 19980122 Process_Time: 0739 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: TBRABETS DOCUMENT NAWQA_HUC UPDATE TBRABETS Source_Used_Citation_Abbreviation: None Process_Date: 19980131 Process_Time: 0828 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: TBRABETS LABELERRORS NAWQA_HUC Source_Used_Citation_Abbreviation: None Process_Date: 19980227 Process_Time: 0950 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: TBRABETS NODEERRORS NAWQA_HUC DANGLE Source_Used_Citation_Abbreviation: None Process_Date: 19980227 Process_Time: 0950 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: TBRABETS DOCUMENT NAWQA_HUC UPDATE TBRABETS Source_Used_Citation_Abbreviation: None Process_Date: 19980227 Process_Time: 0956 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: TBRABETS DOCUMENT NAWQA_HUC UPDATE TBRABETS Source_Used_Citation_Abbreviation: None Process_Date: 19980227 Process_Time: 0959 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: TBRABETS DOCUMENT NAWQA_HUC UPDATE TBRABETS Source_Used_Citation_Abbreviation: None Process_Date: 19980227 Process_Time: 1009 Source_Produced_Citation_Abbreviation: None Cloud_Cover: n/a 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: 31 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: String Point_and_Vector_Object_Count: 264 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains Point_and_Vector_Object_Count: 32 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_HUC.PAT Entity_Type_Definition: area and hydrologic unit code for each polygon Entity_Type_Definition_Source: 1:250000 quadrangles of Alaska Attribute: Attribute_Label: - Attribute_Definition: area and hydrologic unit code for each polygon Attribute_Definition_Source: 1:250000 quadrangles of Alaska 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_HUC# 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_HUC-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: HUC.CODES Attribute_Definition: 8 digit hydrologic unit code Attribute_Definition_Source: Interagency Hydrology Committee of Alaska Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: LABEL Attribute_Definition: Coded with a nonzero positive number for plotting purposes only Attribute_Definition_Source: Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Detailed_Description: Entity_Type: Entity_Type_Label: NAWQA_HUC.AAT Entity_Type_Definition: arc attribute table Entity_Type_Definition_Source: 1 Attribute: Attribute_Label: - Attribute_Definition: arc attribute table Attribute_Definition_Source: 1 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_HUC# 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_HUC-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: LINE Attribute_Definition: Different numbers correspond to major drainages Attribute_Definition_Source: Interagency Hydrology Committee for Alaska Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Overview_Description: Entity_and_Attribute_Overview: In nawqa_huc.pat, an attribute HUC.CODES refers to the hydrologic unit number assigned to the particular polygon. In nawqa_huc.aat, an attribute LINE is a 'tag' for each arc and allows the user to plot the major boundaries if needed. 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: 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