Sediment deposition in the Elwha River estuary, Washington, measured on rod surface elevation tables (RSETs) from 2011 to 2014

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Frequently anticipated questions:

What does this data set describe?

Title:
Sediment deposition in the Elwha River estuary, Washington, measured on rod surface elevation tables (RSETs) from 2011 to 2014
Abstract:
This portion of the data release presents sediment deposition in the estuary as measured using rod surface elevation tables (RSETs) at fifteen locations throughout the Elwha River estuary, Washington, from August 2011 to June 2014 (no associated USGS Field Activities numbers because data were collected predominantly by biologists from the Lower Elwha Klallam Tribe). The locations of the RSETs were determined with a hand-held global positioning system (GPS). We measured sediment deposition from 2011 to 2013 using the RSET table and pins at 36 points around each RSET. Because of extensive sediment deposition in the estuary, we needed to modify our methodology in 2014. We fabricated a new attachment for the RSET base that consisted of a 30 cm horizontal measuring rod and level, which replaced the RSET table. We leveled the rod with respect to the RSET receiver and measured the distance from the end of the rod to the sediment surface at six locations around the center point using a weighted line. The two methods were calibrated so that measurements were comparable. Measurements were taken approximately every two months in 2011 and 2012 and before and after the rainy and freshet (snowmelt) seasons in 2013 and 2014. The sediment deposition data are provided in a comma-delimited spreadsheet (.csv).
  1. How might this data set be cited?
    Foley, Melissa M., and Paradis, Rebecca, 2017, Sediment deposition in the Elwha River estuary, Washington, measured on rod surface elevation tables (RSETs) from 2011 to 2014: data release DOI:10.5066/F75B00N4, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

    This is part of the following larger work.

    Foley, Melissa M., Shafroth, Patrick B., Beirne, Matthew M., Paradis, Rebecca, and Ritchie, Andrew C., 2017, Ecological parameters in the Elwha River estuary before and during dam removal: data release DOI:10.5066/F75B00N4, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, CA.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -123.56693
    East_Bounding_Coordinate: -123.55718
    North_Bounding_Coordinate: 48.14900
    South_Bounding_Coordinate: 48.14520
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 11-Aug-2011
    Ending_Date: 11-Jun-2014
    Currentness_Reference:
    ground condition at time data were collected
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: comma-delimited text
  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 (166)
    2. What coordinate system is used to represent geographic features?
      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.00001. Longitudes are given to the nearest 0.00001. Latitude and longitude values are specified in Decimal degrees. The horizontal datum used is WGS_1984.
      The ellipsoid used is WGS_1984.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.257223563.
  7. How does the data set describe geographic features?
    Sediment deposition
    Tabular data (Source: Producer defined)
    Latitude (deg. N)
    Latitude of sample in decimal degrees, north (Source: producer defined)
    Range of values
    Minimum:48.14520
    Maximum:48.14900
    Units:decimal degrees
    Longitude (deg. E)
    Longitude of sample in decimal degrees, east (Source: producer defined)
    Range of values
    Minimum:-123.55718
    Maximum:-123.56693
    Units:decimal degrees
    RSET number
    Name of RSET location (Source: producer defined) Unique identifier for the location given when permanent stations were installed.
    Date measured
    Date RSET was measured in mm/dd/yyyy format (Source: producer defined)
    Range of values
    Minimum:08/11/2011
    Maximum:06/11/2014
    Units:Dates in mm/dd/yyyy format
    Average distance
    Average measured distance from the table or measuring rod to the sediment surface. NS indicates the location was not sampled. Negative numbers indicate that sediment deposition was greater than the height of the original rod and extensions had to be added. (Source: producer defined)
    Range of values
    Minimum:-450.7
    Maximum:980.4
    Units:millimeters
    Change
    Average sediment surface height change was calculated between successive time periods by subtracting the new measurement from the previous one. Positive numbers indicate that sediment was deposited between sampling intervals; negative numbers indicate erosion occurred between sampling intervals. NA indicates RSET was not measured in consecutive months so change could not be measured. (Source: producer defined)
    Range of values
    Minimum:-693.7
    Maximum:948
    Units:millimeters
    Entity_and_Attribute_Overview: The first line of the csv file is a header line.
    Entity_and_Attribute_Detail_Citation: U.S. Geological Survey

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Melissa M. Foley
    • Rebecca Paradis
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    USGS Pacific Coastal and Marine Science Center
    Attn: PCMSC Science Data Coordinator
    2885 Mission St
    Santa Cruz, CA
    USA

    831-427-4747 (voice)
    pcmsc_data@usgs.gov

Why was the data set created?

Data were obtained to assess the sediment response following the removal of two dams on the Elwha River between 2011 and 2014. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

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: 11-Aug-2011 (process 1 of 12)
    Rod surface elevation tables were monitored to assess amount of sediment change.
    Date: 11-Oct-2011 (process 2 of 12)
    Rod surface elevation tables were monitored to assess amount of sediment change.
    Date: 12-Dec-2011 (process 3 of 12)
    Rod surface elevation tables were monitored to assess amount of sediment change.
    Date: 08-Mar-2012 (process 4 of 12)
    Rod surface elevation tables were monitored to assess amount of sediment change.
    Date: 07-May-2012 (process 5 of 12)
    Rod surface elevation tables were monitored to assess amount of sediment change.
    Date: 12-Jul-2012 (process 6 of 12)
    Rod surface elevation tables were monitored to assess amount of sediment change.
    Date: 17-Sep-2012 (process 7 of 12)
    Rod surface elevation tables were monitored to assess amount of sediment change.
    Date: 28-Mar-2013 (process 8 of 12)
    Rod surface elevation tables were monitored to assess amount of sediment change.
    Date: 07-Nov-2013 (process 9 of 12)
    Rod surface elevation tables were monitored to assess amount of sediment change.
    Date: 11-Jun-2014 (process 10 of 12)
    Rod surface elevation tables were monitored to assess amount of sediment change.
    Date: 19-Oct-2020 (process 11 of 12)
    Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
    Date: 13-Oct-2021 (process 12 of 12)
    Performed minor edits to the metadata to correct typos. No data were changed Person who carried out this activity:
    U.S. Geological Survey
    Attn: Susan A. Cochran
    Geologist
    2885 Mission Street
    Santa Cruz, CA

    831-460-7545 (voice)
    scochran@usgs.gov
  3. What similar or related data should the user be aware of?
    Foley, Melissa M., Warrick, Jonathan A., Ritchie, Andrew C., Stevens, Andrew W., Shafroth, Patrick B., Duda, Jeffrey J., Beirne, Matthew M., Paradis, Rebecca, Gelfenbaum, Guy R., McCoy, Randall, and Cubley, Erin S., 2017, Coastal habitat and biological community response to dam removal on the Elwha River: Ecological Monographs, Ecological Society of America, Washington DC.

    Online Links:

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?
    A formal accuracy assessment of the horizontal positional information in the data set has not been conducted.
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    Dataset 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 as the originator(s) 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

    1-888-275-8747 (voice)
    sciencebase@usgs.gov
  2. What's the catalog number I need to order this data set? Sediment deposition data are presented as a comma-delimited file (.csv) and associated 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?

Who wrote the metadata?

Dates:
Last modified: 13-Oct-2021
Metadata author:
USGS Pacific Coastal and Marine Science Center
Attn: PCMSC Science Data Coordinator
2885 Mission St
Santa Cruz, CA
USA

831-427-4747 (voice)
pcmsc_data@usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)
This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/DataReleases/ScienceBase/DR_F75B00N4/Elwha_estuary_RSETs_2011-2014_metadata.faq.html>
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