Identification_Information:
  Citation:
    Citation_Information:
      Originator: Guam Coastal Management Program, Bureau of Statistics and Plans
      Publication_Date: 2013
      Title: Contour lines (50-meter interval)
      Geospatial_Data_Presentation_Form: vector digital data
  Description:
    Abstract: This dataset shows the contour lines at 50-meter intervals for the island of Guam. It was created from a 4-meter resolution bareearth elevation raster and a shoreline shapefile. The bareearth raster was derived from a last return terrain from the 2007 LIDAR data for the island of Guam collected by the Joint Airborne LIDAR Bathymetry Technical Center of Expertise (JALBTCX) for the Government of Guam Department of Public Works, and the Government of Guam Emergency Management Office.The original LiDAR dataset was developed by the U.S. Army Corps of Engineers, Honolulu District for quality checking purposes. This is an interim product that is expected to be replaced since the data is not final. The contour lines were created by the Bureau of Statistics and Plans, Government of Guam.
    Purpose: The contour line files were compiled to provide elevational information for use in general planning. They do NOT replace on-the-ground survey.
    Supplemental_Information: The LIDAR data was collected for the Government of Guam Department of Public Works, and the Government of Guam Emergency Management Office.  The U.S. Army Corps of Engineers, Honolulu District project manager was Milton Yoshimoto (808) 438-2250.
  Time_Period_of_Content:
    Time_Period_Information:
      Single_Date/Time:
        Calendar_Date: 2007
    Currentness_Reference: ground condition
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: As needed
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: 144.616019
      East_Bounding_Coordinate: 144.959891
      North_Bounding_Coordinate: 13.655217
      South_Bounding_Coordinate: 13.242228
  Keywords:
    Theme:
      Theme_Keyword: LIDAR
      Theme_Keyword: topography
      Theme_Keyword: contours
      Theme_Keyword: contour lines
    Place:
      Place_Keyword: Guam
      Place_Keyword: U.S. Territory
      Place_Keyword: Mariana Islands
      Place_Keyword: Micronesia
      Place_Keyword: Northwest Pacific
      Place_Keyword: Western Pacific
      Place_Keyword: Pacific Islands
    Stratum:
      Stratum_Keyword: U.S. Army Corps of Engineers, Honolulu District
      Stratum_Keyword: Mobile District
      Stratum_Keyword: Joint Airborne LIDAR Bathymetry Technical Center of Expertise (JALBTCX)
      Stratum_Keyword: Government of Guam
      Stratum_Keyword: Department of Public Works
      Stratum_Keyword: Emergency Management Office
      Stratum_Keyword: GovGuam
      Stratum_Keyword: Bureau of Statistics and Plans
    Temporal:
      Temporal_Keyword: 2007
  Access_Constraints: Apply caution and professional judgement when using this data set.
  Use_Constraints: These contour lines are for informational purposes and may not have been prepared for or be suitable for legal, engineering or surveying purposes. The Bureau of Statistics and Plans or the University of Guam cannot assume liability for any damages or misrepresentations caused by any inaccuracies in the data or as a result of the data to be in a particular system.
  Point_of_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: Guam Coastal Management Program, Bureau of Statistics and Plans
      Contact_Position: GIS Manager
      Contact_Voice_Telephone: (671) 472-4201
  Data_Set_Credit: Guam Coastal Management Program, Bureau of Statistics and Plans.
  Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.4.1420
Data_Quality_Information:
  Logical_Consistency_Report: This data set was created from bareearth raster data.  See metadata of original file.
  Lineage:
    Process_Step:
      Process_Description:
        Convert LIDAR data to multipoint using first return, any classification, avg spacing  = 1.5.
        Build terrain
        Convert terrain to raster using nearest neighbor interpoation, cell size=2
        Import and edit metadata.
      Process_Date: January 2008
      Process_Contact:
        Contact_Information:
          Contact_Person_Primary:
            Contact_Person: Benton Ching, P.E.
            Contact_Organization: Honolulu District, U.S. Army Corps of Engineers, Technical Integration Group
          Contact_Position: Hydraulic Engineer
          Contact_Voice_Telephone: (808) 438-1157
          Contact_Facsimile_Telephone: (808) 438-2035
    Process_Step:
      Process_Description:
        Projected raster to WGS84_UTM_Zone_55_North using "NAD_1983_To_WGS_1984". Resample raster to a 4-meter resolution grid. Create 10-meter contour lines using Spatial Analyst tools.

        Further processing to make it a visually better result included:
        a. deleted 0m contour lines along shoreline (over 2000 tiny circles -> which were not continous)
        b. converted guam_final_poly_UTM to polyline
        c. copied guam_final_poly_UTM_line to contours and assign 0 elevation to it
        d. added field length (meters ) -> calculate -> select Length <= 10m) -> 5275 out of 16956 selected -> delete selected (tiny circles)
        e. delete abnormal lines (e.g., negative lines near Leo Palace and all lines outside Guam shoreline polygon.

        => extract only 50-meter contour lines and create new shapefile.
        Clean polylines -> delete all lines with length < 50m.
      Process_Contact:
        Contact_Information:
          Contact_Position: GIS Support for GCMP, University of Guam (WERI)
          Contact_Electronic_Mail_Address: mariakottermair@uguam.uog.edu
          Contact_Person_Primary:
            Contact_Person: Maria Kottermair
            Contact_Organization: Guam Coastal Management Program, Bureau of Statistics and Plans
      Source_Used_Citation_Abbreviation: bareearth_4m
    Source_Information:
      Source_Citation:
        Citation_Information:
          Title: bareearth_4m
      Source_Time_Period_of_Content:
        Source_Currentness_Reference: 2007
    Source_Information:
      Source_Citation:
        Citation_Information:
          Title: Guam_final_poly
          Originator: Bureau of Statistics and Plans
          Other_Citation_Details: Vectorized Shoreline of Guam, Derived from IKONOS, 2002
  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report: Accurcacy assessment has not been performed.
Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Vector
  Point_and_Vector_Object_Information:
Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Planar:
      Planar_Coordinate_Information:
        Planar_Coordinate_Encoding_Method: row and column
        Coordinate_Representation:
          Abscissa_Resolution: 1.000000
          Ordinate_Resolution: 1.000000
        Planar_Distance_Units: meters
    Geodetic_Model:
      Horizontal_Datum_Name: D_WGS_1984
      Ellipsoid_Name: WGS_1984
  Vertical_Coordinate_System_Definition:
    Altitude_System_Definition:
      Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinates
Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: contours_50m
      Entity_Type_Definition: Not Found in Release
      Entity_Type_Definition_Source: SDSFIE Release 2.310
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: Esri
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
    Attribute:
      Attribute_Label: Shape
      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: Esri
      Attribute_Domain_Values:
        Unrepresentable_Domain: Coordinates defining the features.
    Attribute:
      Attribute_Label: CONTOUR
    Attribute:
      Attribute_Label: Length_m
    Attribute:
      Attribute_Label: Shape_Length
      Attribute_Definition: Length of feature in internal units.
      Attribute_Definition_Source: Esri
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically generated.
Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Mr. Victor Torres
        Contact_Organization: Government of Guam, Bureau of Statistics and Plans
      Contact_Position: GIS Manager
      Contact_Address:
        Address: P.O. Box 2950
        City: Hagatna
        State_or_Province: Guam
        Postal_Code: 96932
      Contact_Voice_Telephone: (671) 472-4201
  Resource_Description: Downloadable Data
  Distribution_Liability: Consult with Government of Guam, Bureau of Plans and Statistics.
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Transfer_Size: 1597.707
Metadata_Reference_Information:
  Metadata_Date: 20130510
  Metadata_Future_Review_Date: As Needed
  Metadata_Contact:
    Contact_Information:
      Contact_Position: GIS Support for GCMP, University of Guam (WERI)
      Contact_Electronic_Mail_Address: mariakottermair@uguamlive.uog.edu
      Contact_Person_Primary:
        Contact_Person: Maria Kottermair
        Contact_Organization: Guam Coastal Management Program, Bureau of Statistics and Plans
      Contact_Voice_Telephone: (671) 725-2751
  Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Time_Convention: local time
  Metadata_Access_Constraints: None
  Metadata_Use_Constraints: None
Lineage:
