Upstream sediment contributions to Lake Mills on the Elwha River, Washington, 1926 to 2016

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Frequently anticipated questions:


What does this data set describe?

Title:
Upstream sediment contributions to Lake Mills on the Elwha River, Washington, 1926 to 2016
Abstract:
Sediment inputs to Lake Mills, on the Elwha River, Washington, were measured from 1927 to 2016. These measurements represent the annual total sediment load, in tonnes per year, that were input into Lake Mills and partially trapped by Glines Canyon dam. The sediment was allowed to erode and be transported down-river by the removal of the Glines Canyon and Elwha dams during 2011 to 2014. The measurements were taken as part of a study investigating the river channel's morphological responses to the removal of two large dams - the Elwha River and Glines Canyon dams.
Supplemental_Information:
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
  1. How might this data set be cited?
    Curran, Christopher A, Magirl, Christopher S, Bountry, Jennifer A, and Randle, Timothy J, 2018, Upstream sediment contributions to Lake Mills on the Elwha River, Washington, 1926 to 2016: 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: 30-Sep-1927
    Ending_Date: 30-Sep-2016
    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 at the USGS gaging station 12044900, on the Elwha River, northern Washington state, 2.5 miles upstream of the former Glines Canyon Dam. Coordinates of the station were: latitude 47.971229 and longitude -123.591546.
      This is a point data set.
    2. What coordinate system is used to represent geographic features?
  7. How does the data set describe geographic features?
    ElwhaRiver_LakeMillsSedimentInputs_1926to2016.csv
    Upstream sediment contribution measurements to Lake Mills. (Source: Producer defined)
    End of WY
    End of water year (October 1 to September 30) in which measurement was calculated. (Source: Producer defined)
    Range of values
    Minimum:1927
    Maximum:2016
    Units:Water year
    Date
    Date to which the measurement corresponds, in mm/dd/yyyy format. (Source: Producer defined.)
    Range of values
    Minimum:09/30/1927
    Maximum:09/30/2016
    Corrected Annual Total Sediment Load (tonnes/yr)
    Calculated upstream sediment contribution to Lake Mills, in tonnes per year. (Source: Producer defined.)
    Range of values
    Minimum:14201
    Maximum:1810894
    Units:Tonnes per year

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Christopher A Curran
    • Christopher S Magirl
    • Jennifer A Bountry
    • Timothy J Randle
  2. Who also contributed to the data set?
    Data collection was funded by U.S. Geological Survey, Environmental Protection Agency, National Park Service, and U.S. Bureau of Reclamation
  3. To whom should users address questions about the data?
    Christopher A Curran
    U.S. Geological Survey, Washington Water Science Center
    934 Broadway
    Tacoma, WA
    United States

    253-552-1614 (voice)
    ccurran@usgs.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: 2017 (process 1 of 2)
    Total upstream sediment load was estimated using measurements at USGS gauge 12044900 above Lake Mills and discharge-related empirical relationships derived from sediment measurements from water years 1994--1998 and 2006--2007 (Childers, 2000; Curran and others, 2009; Magirl and others, 2015). The location of the gauge was: north latitude 47 degrees 58'13" and west longitude 123 degrees 35'22", in NE 1/4 NE 1/4 Section 32, Township 29 North, Range 7 West, in Clallam County, Hydrologic Unit 17110020, Olympic National Park, on right bank upstream from Cat Creek, 2.5 mi above site of Glines Canyon Dam (removed), 12.5 mi southwest of Port Angeles, and at river mile 16.0. Drainage area is 198 square miles.
    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?
    Magirl, Christopher S., Hilldale, Robert C., Curran, Christopher A., Duda, Jeffrey J., Straub, Timothy D., Domanski, Marian, and Foreman, James R., 2015, Large-scale dam removal on the Elwha River, Washington, USA: Fluvial sediment load: Geomorphology, v. 246, p. 669-686, http://www.sciencedirect.com.

    Online Links:

    Childers, Dallas, Kresch, David L., Gustafson, Steven A., Randle, Timothy J., Melena, James T., and Cluer, Brian, 2000, Hydrologic data collected during the 1994 Lake Mills Drawdown Experiment, Elwha River, Washington: Water-Resources Investigations Report 99-4215, U.S. Geological Survey, Reston, VA.

    Curran, Christopher A., Konrad, Christopher P., Higgins, Johnna L., and Bryant, Mark K., 2009, Estimates of sediment load prior to dam removal in the Elwha River, Clallam County, Washington: Scientific Investigations Report 2009-5221, U.S. Geological Survey, Reston, VA.


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

  1. How well have the observations been checked?
    Data values fall within expected range.
  2. How accurate are the geographic locations?
    No formal positional accuracy tests were conducted
  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?
    Data values fall within expected range.

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 (USGS) and the U.S. Bureau of Reclamation 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 (Elwha_LakeMillsSedimentInputs_1926to2016.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)

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