Elevations of the Elwha and Mills dams, Elwha River, Washington, 2008 to 2013

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Frequently anticipated questions:


What does this data set describe?

Title:
Elevations of the Elwha and Mills dams, Elwha River, Washington, 2008 to 2013
Abstract:
This dataset presents elevation measurements of two dams on the Elwha River, Washington, during their removal processes from 2008 to 2013. Elevation measurements of the Elwha Dam were taken from October 2008 to March 2012. Elevation measurements of the Glines Canyon dam, which was further upstream than the Elwha Dam, were taken from October 2010 to October 2013. The measurements were by the U.S. Bureau of Reclamation as part of a study investigating the river channel's morphological responses to dam removal.
  1. How might this data set be cited?
    Bountry, Jennifer A, and Randle, Timothy J, 2018, Elevations of the Elwha and Mills dams, Elwha River, Washington, 2008 to 2013: data release doi:10.5066/F7PG1QWC, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

    This is part of the following larger work.

    Ritchie, Andrew C, Curran, Christopher A, Magirl, Christopher S, Bountry, Jennifer A, Hilldale, Robert C, Randle, Timothy J, and Duda, Jefferey J, 2018, Data in support of 5-year sediment budget and morphodynamic analysis of Elwha River following dam removals: data release doi:10.5066/F7PG1QWC, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -123.614549
    East_Bounding_Coordinate: -123.541697
    North_Bounding_Coordinate: 48.145105
    South_Bounding_Coordinate: 47.959409
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 01-Oct-2008
    Ending_Date: 15-Oct-2013
    Currentness_Reference:
    ground condition
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: Comma-separated values (CSV) spreadsheet
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      Indirect_Spatial_Reference:
      Data were collected in the Elwha River, Washington at the Elwha Dam (former Lake Aldwell) and the Glines Canyon Dam (former Lake Mills).
    2. What coordinate system is used to represent geographic features?
  7. How does the data set describe geographic features?
    ElwhaRiver_DamElevations_2008to2013.csv
    Dam elevation measurements and dates of measurements. (Source: Producer defined)
    Dam
    Name of dam measured. (Source: Producer defined)
    ValueDefinition
    ElwhaThe Elwha dam
    Glines CanyonThe Glines Canyon dam
    Month
    Month of year during measurement. (Source: Producer defined.)
    Range of values
    Minimum:1
    Maximum:12
    Day
    Day of month during measurement. (Source: Producer defined.)
    Range of values
    Minimum:1
    Maximum:31
    Year
    Year during measurement. (Source: Producer defined.)
    Range of values
    Minimum:2008
    Maximum:2013
    Height
    Dam height measurement (height of the dam above the river bed) in meters. (Source: Producer defined.)
    Range of values
    Minimum:31.5468
    Maximum:181.3560
    Units:meters

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Jennifer A Bountry
    • Timothy J Randle
  2. Who also contributed to the data set?
    Data collection was funded by U.S. Bureau of Reclamation
  3. To whom should users address questions about the data?
    Jennifer A Bountry
    U.S. Bureau of Reclamation, Technical Service Center
    6th and Kipling, Building 67
    Denver, CO
    United States

    303-445-3614 (voice)
    jbountry@usbr.gov

Why was the data set created?

Data were obtained to assess the morphological and sediment budget responses following the removal of two dams in the Elwha River. These data are intended for science researchers, students, policy makers, and the general public. These data can be used with geographic information systems or other software to identify topographic features.

How was the data set created?

  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
    Date: 15-Oct-2013 (process 1 of 2)
    Dam height was measured as the height of the dam above the riverbed, in meters.
    Date: 17-Jul-2018 (process 2 of 2)
    Corrected name of theme keyword thesaurus from ISO 19115 Topic Categories to Category. Person who carried out this activity:
    Susan A Cochran
    U.S. Geological Survey, Pacific Coastal and Marine Science Center
    2885 Mission St.
    Santa Cruz, CA
    United States

    831-460-7545 (voice)
    scochran@usgs.gov
  3. What similar or related data should the user be aware of?

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

  1. How well have the observations been checked?
    No formal attribute accuracy tests were conducted
  2. How accurate are the geographic locations?
    Data values are within expected reasonable values.
  3. How accurate are the heights or depths?
    No formal positional accuracy tests were conducted
  4. Where are the gaps in the data? What is missing?
    Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details.
  5. How consistent are the relationships among the observations, including topology?
    No formal logical accuracy tests were conducted

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:
USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey and the U.S. Bureau of Reclamation (USBR) as the originators of the dataset and in products derived from these data.
  1. Who distributes the data set? (Distributor 1 of 1)
    U.S. Geological Survey - ScienceBase
    Denver Federal Center, Building 810, Mail Stop 302
    Denver, CO
    United States

    1-888-275-8747 (voice)
    sciencebase@usgs.gov
  2. What's the catalog number I need to order this data set? data are downloadable in .csv format (ElwhaRiver_DamElevations_2008to2013.csv) along with CMGDS FGDC-compliant metadata.
  3. What legal disclaimers am I supposed to read?
    Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.
  4. How can I download or order the data?
  5. What hardware or software do I need in order to use the data set?
    The downloadable data file is available in comma-separated values (CSV) spreadsheet format. Text editing software can be used to open the file, as well as spreadsheet programs, such as Microsoft Excel.

Who wrote the metadata?

Dates:
Last modified: 17-Jul-2018
Metadata author:
Andrew C Ritchie
U.S. Geological Survey, Pacific Coastal and Marine Science Center
2885 Mission Street
Santa Cruz, CA
United States

831-460-7454 (voice)
aritchie@usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)

This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/westcoast/washington/elwha/ElwhaRiver_DamElevations_2008to2013.faq.html>
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