NEST98PTS_UTM: Modern digital hydrographic and bathymetric data points from the coast of southwest Washington and northwest Oregon

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Frequently anticipated questions:


What does this data set describe?

Title:
NEST98PTS_UTM: Modern digital hydrographic and bathymetric data points from the coast of southwest Washington and northwest Oregon
Abstract:
NEST98PTS_UTM is a point coverage containing digital hydrographic data from the coast of Southwest Washington and Northwest Oregon, USA. The horizontal datum is Universal Transverse Mercator, Zone 10 meters. The data set includes National Ocean Service (NOS) hydrographic surveys collected between the 1926 and 1928, surveys collected in 1998 by the U.S. Army Corps of Engineers (USACE) around the entrances to Grays Harbor, Willapa Bay, and the Columbia River, and additional data fabricated by the author in order to generate smooth transitions between the data sets. The user is cautioned, to use this data set with full knowledge of the original intent the limitations, and assumptions used to generate it.
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 data described here are part of a data release of sixteen bathymetric surface grids. These include: 1926 regional and study area grids and 1926-1998 merged regional and study area grids, each at 500m and 750m grid spacing, in UTM(m) and Washington State Plane(m) projections. The regional data set extends from near Heceta Head, Oregon to Cape Johnson, Washington, from the shoreline to about -2000m; the study area data set extends from Tillamook Head Oregon to Pt. Grenville WA, from the shore to approx. ~-700m water depth. Please refer to Gibbs, 2000 for details.
  1. How might this data set be cited?
    Gibbs, Ann E., 20001024, NEST98PTS_UTM: Modern digital hydrographic and bathymetric data points from the coast of southwest Washington and northwest Oregon: U.S. Geological Survey (USGS), Menlo Park, CA.

    This is part of the following larger work.

    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.: U.S. Geological Survey Open-File Report 00-448.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -124.37669646
    East_Bounding_Coordinate: -123.93039114
    North_Bounding_Coordinate: 47.12151645
    South_Bounding_Coordinate: 45.93327366
  3. What does it look like?
    http://geo-nsdi.er.usgs.gov/metadata/open-file/00-448/00-448pts.gif (GIF)
    Geographic distribution of point data. Red points are from the historical data ORWA26pts_utm, blue are from the historical data SWWA26pts_utm, and green are from the modern data NEST98pts_utm. This is an 8-bit image, 458x707 pixels.
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 1926
    Ending_Date: 1998
    Currentness_Reference:
    ground condition
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: digital data
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a Point data set. It contains the following vector data types (SDTS terminology):
      • Point (271867)
    2. What coordinate system is used to represent geographic features?
      Grid_Coordinate_System_Name: Universal Transverse Mercator
      Universal_Transverse_Mercator:
      UTM_Zone_Number: 10
      Transverse_Mercator:
      Scale_Factor_at_Central_Meridian: 0.9996
      Longitude_of_Central_Meridian: -123.
      Latitude_of_Projection_Origin: 0.0
      False_Easting: 500000
      False_Northing: 0
      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 17.77442932128
      Ordinates (y-coordinates) are specified to the nearest 17.77442932128
      Planar coordinates are specified in Meters
      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378206.4.
      The flattening of the ellipsoid used is 1/294.98.
      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
  7. How does the data set describe geographic features?
    Entity_and_Attribute_Overview:
    
    NEST98PTS_UTM.PAT:
    
    COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
        1  AREA                   4    12     F      3
        5  PERIMETER              4    12     F      3
        9  NEST98PTS_UTM#         4     5     B      -
       13  NEST98PTS_UTM-ID       4     5     B      -
       17  DEPTH-MLLW             4     9     F      2
       21  CARTOCODE              3     3     I      -
       24  SURVEY                 7     7     C      -
       31  SURVEY-YEAR            4     4     I      -
       35  X-COORD                4    12     F      3
       39  Y-COORD                4    12     F      3
    AREA, PERIMETER: value = 0 for point features
    NEST98PTS_UTM#:   unique internal control number
    NEST98PTS_UTM-ID: sequence number of all data points
    DEPTH-MLLW:      surveyed water depth in meters Mean Lower Low Water
    CARTOCODE:       NGDC Cartographic code
    
    0 = "Fabricated data" 701-706 = "Grays Harbor 1998 survey; tracks run in an east to west direction" 711 = "SOUNDING (Meters and tenths)"
    SURVEY:          H#### = NOS hydrographic survey chart identifier
    
    GH98ANP = 1998 Grays Harbor Approach Survey PCOE98 = 1998 ACOE Columbia River Approach Survey and Extension WB98 = 1998 ACOE Willapa Bay; thinned crarcpt = fabricated contour data, Columbia River gharcpt = fabricated contour data, Grays Harbor wbarcpt = fabricated contour data, Willapa Bay mvd26pt = rotated and shifted 1926 data, Willapa Bay
    SURVEY-YEAR:     Year of survey (0 for fabricated data)
    X-COORD:         X (northing) value in meters, WASP Zone 5626
    Y-COORD:         Y (easting) value in meters, WASP Zone 5626
    
    Entity_and_Attribute_Detail_Citation: none

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Gibbs, Ann E.
  2. Who also contributed to the data set?
    This Program is jointly funded by the Washington State Department of Ecology and the US Geological Survey, Coastal & Marine Geology Program.
  3. To whom should users address questions about the data?
    United States Geological Survey (USGS), Coastal and Marine Geology (CMG)
    Attn: Ann E. Gibbs
    Geologist
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA
    USA

    (650) 329-5060 (voice)
    (650) 329-5190 (FAX)
    agibbs@usgs.gov

Why was the data set created?

This data set is intended for use as modern bathymetric data set for scientific research. It is not intended for navigational purposes. The data were originally used 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.

How was the data set created?

  1. From what previous works were the data drawn?
    NOSHDB (source 1 of 5)
    National Geophysical Data Center, 1998, National Ocean Service Hydrographic Survey Data: US Coastal Waters. CD-ROM Set, Version 4.0.: NOAA Data Announcement 98-MGG-03, World Data Center for Marine Geology & Geophysics, Boulder CO.

    Type_of_Source_Media: CD-ROM
    Source_Contribution: All pre-1998 hydrographic data were obtained from this source.
    GRAYS98 (source 2 of 5)
    US Army Corps of Engineers; Seattle District, 1998 (unpublished material), 1998 Grays Harbor Approach and Conditions Survey.

    Type_of_Source_Media: online
    Source_Contribution: Included in merged 1926/1998 data sets
    WILLAPA98 (source 3 of 5)
    US Army Corps of Engineers; Seattle District and Waterways Experiment Station, 1998 (unpublished material), 1998 Willapa Bay Hydrographic Survey.

    Type_of_Source_Media: online
    Source_Contribution: Included in merged 1926/1998 data sets
    MCR_98_AP (source 4 of 5)
    US Army Corps of Engineers, Portland District, 1998 (unpublished material), 1998 MCR Approach Survey.

    Type_of_Source_Media: online
    Source_Contribution: Included in merged 1926/1998 data sets
    MCR_98_EX (source 5 of 5)
    U.S. Army Corps of Engineers, Portland District, and U.S. Geological Survey, CMG, 1998 (unpublished material), 1998 MCR Extension survey.

    Type_of_Source_Media: online
    Source_Contribution: Included in merged 1926/1998 data sets
  2. How were the data generated, processed, and modified?
    Date: 1999 (process 1 of 5)
    Converted from WASP 4602 feet to WASP 5626 meters and merged into data set.
    Date: 1999 (process 2 of 5)
    Converted from WASP 4602 feet to WASP 5626 meters and merged into data set.
    Date: 1999 (process 3 of 5)
    Converted from OR SP 5076 feet NAD27, to WASP 5626 meters NAD83 and merged into data set.
    Date: 1999 (process 4 of 5)
    Converted from WASP 4602 feet to WASP 5626 meters and merged into data set.
    Date: 24-Oct-2000 (process 5 of 5)
    Creation of original metadata record Person who carried out this activity:
    United States Geological Survey (USGS), Coastal and Marine Geology (CMG)
    Attn: Ann E. Gibbs
    Geologist
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA
    USA

    (650) 329-5060 (voice)
    (650) 329-5190 (FAX)
    agibbs@usgs.gov
  3. What similar or related data should the user be aware of?
    Ann E. Gibbs and Guy Gelfenbaum, 1999, Bathymetric change off the Washington/Oregon Coast: Coastal Sediments '99 Proceedings of the 4th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes.


How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?
    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).
  2. How accurate are the geographic locations?
    Horizontal accuracies for NOS surveys vary by water depth and distance from shore (see Gibbs and Gelfenbaum, 1999). Modern ACE surveys used DGPS and RTK positioning and have an accuracy of less than one meter.
  3. How accurate are the heights or depths?
    Vertical accuracies for NOS surveys vary by water depth and distance from shore (see Gibbs and Gelfenbaum, 1999). Modern ACE surveys used single-beam digital fathometers, RTK tides, heave and swell compensator, and have an accuracy of less than one/half meter.
  4. Where are the gaps in the data? What is missing?
    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.
  5. How consistent are the relationships among the observations, including topology?
    Only NOS sounding data with an original cartographic code of 711 are included. The data set was rigorously edited of obviously erroneous points.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
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.
  1. Who distributes the data set? (Distributor 1 of 1)
    United States Geological Survey (USGS), Coastal and Marine Geology (CMG)
    Attn: Ann E. Gibbs
    Geologist
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA
    USA

    (650) 329-5060 (voice)
    (650) 329-5190 (FAX)
    agibbs@usgs.gov
  2. What's the catalog number I need to order this data set? USGS Open-File Report 00-448
  3. What legal disclaimers am I supposed to read?
    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.
  4. How can I download or order the data?

Who wrote the metadata?

Dates:
Last modified: 05-Feb-2016
Metadata author:
Peter N Schweitzer
USGS Midwest Area
Collection manager, USGS Geoscience Data Clearinghouse, http://geo-nsdi.er.usgs.gov/
Mail Stop 954
12201 Sunrise Valley Dr
Reston, VA
USA

703-648-6533 (voice)
703-648-6252 (FAX)
pschweitzer@usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)

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