Identification_Information:

  Citation:
    Citation_Information:
      Originator: 
          Gibbs, Ann E.
      Publication_Date:  2000
      Title: ORWA26_750SP: Oregon/Washington 750 meter, 1926 Bathymetry Grid; 
             Stateplane Projection
      Edition:  Version 1.0
      Geospatial_Data_Presentation_Form:  raster digital data
      Publication_Information:
        Publication_Place:  Menlo Park, CA
        Publisher: U.S. Geological Survey (USGS)
           

  Description:
    Abstract:
      ORWA26_750SP is a digital bathymetric surface grid of the seafloor off
      the coast of Washington and Oregon.  Grid cell spacing is 750m and the
      projection is Washington State Plane South, Zone 5626. 
      The surface was produced by gridding National Ocean Service (NOS)
      Hydrographic Surveys collected between 1926 and 1974 (primarily 
      1926 to 1930). This work includes the most recent bathymetric data
      available on a regional scale over the inner to outer continental shelf
      off the coast of Washington and Oregon. The results represent the
      best available estimate of the seafloor morphology for the time period
      circa 1926. 
    Purpose:
      This bathymetric surface grid is intended for use as an historical
      bathymetric base map for scientific research. It is not intended for
      navigational purposes.  The grid was originally intended for use in wave
      modelling experiments as part of the Southwest Washington Coastal Erosion
      Study (SWCES), a cooperative study by the US Geological Survey and the
      Washington State Department of Ecology.
    Supplemental_Information:
      The SWCES was initiated to examine coastal geology, processes, and
      natural hazards within the Columbia River littoral cell.  The study is
      jointly directed by the U.S. Geological Survey Coastal and Marine
      Geology Program and the Washington State Department of Ecology
      Shorelands and Environmental Assistance Program, with
      active participation of local communities in Pacific and Grays Harbor
      counties. Related USGS work in the Southwest Washington Coastal Erosion
      Study can be found online at:
      http://www.ecy.wa.gov/programs/sea/swce/ 

      The grid described here is part of a data release of sixteen similar
      bathymetric grids.  These include: 1926 and 1926-1998 merged
      Oregon/Washington (ORWA) and Southwest Washington study area (SWWA)
      grids, each at 500m and 750m grid spacing, in UTM Zone 10 (meters)
      and Washington State Plane South Zone 5626 (meters) projections.
      The ORWA data set extends from Heceta Head, Oregon to Cape Johnson,
      Washington, from the shoreline to about 2000m water depth; the SWWA data
      set extends from Tillamook Head Oregon to Pt. Grenville WA, from the
      shore to approximately 700m water depth. 

      The data used to create this bathymetric grid were collected between
      1926 and 1974. Most data were collected between 1926 and 1930.
      Refer to Gibbs and others, 2000 for details.

  Time_Period_of_Content:
    Time_Period_Information:
      Range_of_Dates/Times:
        Beginning_Date:  1926
        Ending_Date:  1974
    Currentness_Reference:  ground condition

  Status:
    Progress:  Complete
    Maintenance_and_Update_Frequency:  As needed
            
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -125.50671183
      East_Bounding_Coordinate: -123.64195084
      North_Bounding_Coordinate: 48.07002254
      South_Bounding_Coordinate: 44.01209001

  Keywords:
    Theme:
      Theme_Keyword_Thesaurus:  None
      Theme_Keyword:  Coastal Geology
      Theme_Keyword:  Marine Geology
      Theme_Keyword:  Bathymetry
      Theme_Keyword:  Hydrographic Data
      Theme_Keyword:  Southwest Washington Coastal Erosion Study
      Theme_Keyword:  Columbia River Littoral Cell
    Place:
      Place_Keyword_Thesaurus:  None
      Place_Keyword:  Southwest Washington
      Place_Keyword:  Northwest Oregon
      Place_Keyword:  Washington
      Place_Keyword:  Oregon
      Place_Keyword:  Grays Harbor
      Place_Keyword:  Willapa Bay
      Place_Keyword:  Columbia River
      Place_Keyword:  Pacific Ocean
      Place_Keyword:  Pacific Northwest
      Place_Keyword:  USA

  Access_Constraints:  None

  Use_Constraints:
    Please recognize the U.S. Geological Survey (USGS) as the source of
    this information.

    Although these data have been used by the U.S. Geological Survey,
    U.S. Department of the Interior, no warranty expressed or implied
    is made by the U.S. Geological Survey as to the accuracy of the
    data. The act of distribution shall not constitute any such warranty, and
    no responsibility is assumed by the U.S. Geological Survey in the
    use of this data, software, or related materials.

    This information is not intended for navigational purposes.

    Any use of trade, firm, or product names is for descriptive
    purposes only and does not imply endorsement by the U.S.
    Government.

    Feel free to use the data but please cite this publication:
    Gibbs, A.E., Buijsman, M.C., and Sherwood, C.R., 2000, 
    Non-navigational Gridded Bathymetry Data : The Washington-Oregon
    Coast, 1926-1998; A data release and description of methods. 
    USGS Open-File-Report OF 00-448.

  Point_of_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization:
          United States Geological Survey (USGS),
          Coastal and Marine Geology (CMG)
        Contact_Person: Ann E. Gibbs
      Contact_Position: Geologist
      Contact_Address:
        Address_Type: mailing address
        Address: USGS, MailStop 999, 345 Middlefield Road
        City: Menlo Park
        State_or_Province: CA
        Postal_Code: 94025-3561
        Country: USA
      Contact_Voice_Telephone: (650) 329-5060
      Contact_Facsimile_Telephone: (650) 329-5190
      Contact_Electronic_Mail_Address: agibbs@usgs.gov

  Data_Set_Credit:
    This Program is jointly funded by the Washington State Department of
    Ecology and the US Geological Survey, Coastal & Marine Geology Program.

  Native_Data_Set_Environment:
    SunOS UNIX, ARC/INFO version 7.2.1, SURFER V.6

  Cross_Reference:
    Citation_Information:
      Originator:  Ann E. Gibbs and Guy Gelfenbaum
      Publication_Date:  1999
      Title: Bathymetric change off the Washington/Oregon Coast
      Series_Information:
        Series_Name:  Coastal Sediments '99
        Issue_Identification:
          Proceedings of the 4th International Symposium 
          on Coastal Engineering and Science 
          of Coastal Sediment Processes

  Cross_Reference:
    Citation_Information:
      Originator:  Gibbs, A.E., Buijsman, M.C., and Sherwood, C.R.,
      Publication_Date:  2000
      Title: 
       Non-navigational Gridded Bathymetry Data : The Washington-Oregon Coast,
       1926-1998; A data release and description of methods 
      Series_Information:
        Series_Name: USGS Open-File-Report 
        Issue_Identification:
         OF 00-448

Data_Quality_Information:

  Attribute_Accuracy:
    Attribute_Accuracy_Report:
      The data have been thoroughly analyzed for for gross inaccuracies.  
      A discussion of errors and accuracies associated with the original
      data collection methodologies can be found in Gibbs and Gelfenbaum
      (1999).
  Logical_Consistency_Report:
    Only NOS sounding data with an original cartographic code of 711
    are included.  The data set was rigorously edited
    of obviously erroneous points.
  Completeness_Report:
    Gaps in the hydrographic survey point data exists west of Willapa Bay
    from approximately -124.034 to -124.363 degrees longitude and
    46.573 to 46.738 degrees latitude and northwest of Tillamook Bay
    from approximately -123.834 to -124.120 longitude and 
    45.472 to 45.626 latitude. The remaining data are considered complete.
  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report:  
        Horizontal accuracies for NOS surveys vary by water depth and
        distance from shore (see Gibbs and Gelfenbaum, 1999).
    Vertical_Positional_Accuracy:
      Vertical_Positional_Accuracy_Report:  
        Vertical accuracies for NOS surveys vary by water depth and
        distance from shore (see Gibbs and Gelfenbaum, 1999).
  Lineage:
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator:  National Geophysical Data Center
          Publication_Date:  1998
          Title:
            National Ocean Service Hydrographic Survey Data:
            US Coastal Waters. CD-ROM Set, Version 4.0.
            Data announcement 98-MGG-03.
            World Data Center for Marine Geology & Geophysics, Boulder CO
      Type_of_Source_Media:  CD-ROM
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_of_Dates/Times:
            Beginning_Date:  1926
            Ending_Date:  1974
        Source_Currentness_Reference:  ground condition
      Source_Citation_Abbreviation:  NOS_HSD
      Source_Contribution:
        All pre-1998 hydrographic data were obtained from this source.
    Process_Step:
      Process_Description:
        See Gibbs, A.E., 2000 for additional information
      Process_Date:  1999
    
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: US Geological Survey, CMG
          Publication_Date: Unpublished material
          Title:  Point coverage ORWA26PTS_SP
          Edition: Version 1.0
      Type_of_Source_Media:  online
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_of_Dates/Times:
            Beginning_Date:  1926
            Ending_Date:  1974
        Source_Currentness_Reference:  ground condition
      Source_Citation_Abbreviation:  ORWA26PTS_SP
      Source_Contribution:
        Original NOS hydrographic data points used for gridding.
    Process_Step:
      Process_Description
        NOS_HSD data projected from Lat/Long NAD27 to WASP South
        Zone 5626, and edited of erroneous points.
        See Gibbs and others, 2000 for additional information
      Process_Date:  1999
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: US Geological Survey, CMG
          Publication_Date:  Unpublished material
          Title:  Point coverage SWWA26PTS_SP
          Edition: Version 1.0
      Type_of_Source_Media:  online
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_of_Dates/Times:
            Beginning_Date:  1926
            Ending_Date:  1974
        Source_Currentness_Reference:  ground condition
      Source_Citation_Abbreviation:  SWWA26PTS_SP
      Source_Contribution:
        Edited NOS hydrographic data used for gridding.
    Process_Step:
      Process_Description: 
        NOS_HSD data projected from Lat/Long NAD27 to WASP South
        Zone 5626, and edited of erroneous points.
        See Gibbs and others, 2000 for additional information
      Process_Date:  1999


Spatial_Data_Organization_Information:

  Direct_Spatial_Reference_Method:  Raster
  Raster_Object_Information:
    Raster_Object_Type:  Grid Cell
    Row_Count:  594
    Column_Count:  162


Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Planar:
      Grid_Coordinate_System:
        Grid_Coordinate_System_Name: State Plane Coordinate System 1983
        State_Plane_Coordinate_System:
          SPCS_Zone_Identifier: 5626
          Lambert_Conformal_Conic:
            Standard_Parallel:45.833333
            Longitude_of_Central_Meridian:-120.5
            Latitude_of_Projection_Origin:45.333333
            False_Easting:500000
            False_Northing:0
      Planar_Coordinate_Information:
        Planar_Coordinate_Encoding_Method: coordinate pair
        Coordinate_Representation:
          Abscissa_Resolution: 750
          Ordinate_Resolution: 750
        Planar_Distance_Units: Meters
    Geodetic_Model:
      Horizontal_Datum_Name:  North American Datum of 1983
      Ellipsoid_Name:  Geodetic Reference System 80
      Semi-Major_Axis: 6378206.4
      Denominator_of_Flattening_Ratio:  294.98

  Vertical_Coordinate_System_Definition:
    Depth_System_Definition:
      Depth_Datum_Name:  Mean lower low water
      Depth_Resolution:  1.0
      Depth_Distance_Units:  meters
      Depth_Encoding_Method:
        Explicit depth coordinate included with horizontal coordinates


Distribution_Information:

  Distributor:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization:
            United States Geological Survey (USGS),
            Coastal and Marine Geology (CMG)
          Contact_Person: Ann E. Gibbs
        Contact_Position: Geologist
        Contact_Address:
          Address_Type: mailing address
          Address: USGS, MailStop 999, 345 Middlefield Road
          City: Menlo Park
          State_or_Province: CA
          Postal_Code: 94025-3561
          Country: USA
        Contact_Voice_Telephone: (650) 329-5060
        Contact_Facsimile_Telephone: (650) 329-5190
        Contact_Electronic_Mail_Address: agibbs@usgs.gov

  Distribution_Liability:
    Please recognize the US Geological Survey and
    Southwest Washington Coastal Erosion Study
    as the source of this information

    Although these data have been used by the U.S.
    Geological Survey, U.S. Department of the Interior,
    no warranty expressed or implied is made by the U.S.
    Geological Survey as to the accuracy of the data.

    The act of distribution shall not constitute any such
    warranty, and no responsibility is assumed by the
    U.S. Geological Survey in the use of this data,
    software, or related materials.

Metadata_Reference_Information:

  Metadata_Date:  20001018

  Metadata_Contact:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization:
            United States Geological Survey (USGS),
            Coastal and Marine Geology (CMG)
          Contact_Person: Ann E. Gibbs
        Contact_Position: Geologist
        Contact_Address:
          Address_Type: mailing address
          Address: USGS, MailStop 999, 345 Middlefield Road
          City: Menlo Park
          State_or_Province: CA
          Postal_Code: 94025-3561
          Country: USA
        Contact_Voice_Telephone: (650) 329-5060
        Contact_Facsimile_Telephone: (650) 329-5190
        Contact_Electronic_Mail_Address: agibbs@usgs.gov
  
  Metadata_Standard_Name:  FGDC Content Standards for Digital Geospatial Metadata

  Metadata_Standard_Version: FGDC-STD-001-1998