Water quality in the Elwha River estuary, Washington, from 2006 to 2014.

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Frequently anticipated questions:

What does this data set describe?

Title:
Water quality in the Elwha River estuary, Washington, from 2006 to 2014.
Abstract:
This portion of the data release presents water column dissolved nutrient concentration data and water quality parameters from samples collected in the Elwha River estuary, Washington, in 2006, 2007, 2013, and 2014 (USGS Field Activities L-15-13-PS, L-24-13-PS, T-R5-13-PS, T-R6-13-PS, T-RA-14-PS, 2014-614-FA, 2014-628-FA, 2014-633-FA, 2014-666-FA). Water column samples were collected by hand in acid-washed opaque bottles from multiple locations. Water quality was measured using a handheld Hydolab Data Sonde 4a. The locations of water sample collections were determined with a hand-held global positioning system (GPS). The water samples were filtered through GF/F filters immediately after collection. The filtrate was collected in scintillation vials and frozen until analysis at either the University of Washington marine chemistry lab (2006 and 2007 samples) or the University of California Santa Barbara Marine Science Institute analytical lab (2013 and 2014 samples). Nutrient concentration and water quality data are provided in a comma-delimited spreadsheet (.csv).
Supplemental_Information:
Additional information about the field activities from which these data were derived are available online at:
https://cmgds.marine.usgs.gov/fan_info.php?fan=L1513PS https://cmgds.marine.usgs.gov/fan_info.php?fan=L2413PS https://cmgds.marine.usgs.gov/fan_info.php?fan=TR513PS https://cmgds.marine.usgs.gov/fan_info.php?fan=TR613PS https://cmgds.marine.usgs.gov/fan_info.php?fan=TRA14PS https://cmgds.marine.usgs.gov/fan_info.php?fan=2014-614-FA https://cmgds.marine.usgs.gov/fan_info.php?fan=2014-628-FA https://cmgds.marine.usgs.gov/fan_info.php?fan=2014-633-FA https://cmgds.marine.usgs.gov/fan_info.php?fan=2014-666-FA
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?
    Foley, Melissa M., Duda, Jeffrey J., Beirne, Matthew M., and Paradis, Rebecca, 2017, Water quality in the Elwha River estuary, Washington, from 2006 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: -123.56768
    East_Bounding_Coordinate: -123.56162
    North_Bounding_Coordinate: 48.14827
    South_Bounding_Coordinate: 48.14510
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 22-Jun-2006
    Ending_Date: 12-Oct-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 (147)
    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?
    Water quality
    Tabular data (Source: Producer defined)
    Field Activity Number
    Unique U.S. Geological Survey field activity identifier (Source: producer defined) Unique identifier for the U.S. Geological Survey field activity. NA indicates no Field Activity Number was generated for that sampling event.
    Dam Condition
    Dam status at the time of sample collection (Source: producer defined)
    ValueDefinition
    Before removalsamples collected before dam removal began
    During removalsamples collected during dam removal (2011-2014)
    Date Collected
    Date of sample collection in mm/dd/yyyy format (Source: producer defined)
    Range of values
    Minimum:06/22/2006
    Maximum:10/12/2014
    Units:Dates in mm/dd/yyyy format
    Site Name
    Name of sample collection site (Source: producer defined) Site name for the sample given when collected in the field
    Latitude (deg. N)
    Latitude of sample in decimal degrees, north (Source: producer defined)
    Range of values
    Minimum:48.1451
    Maximum:48.14827
    Units:decimal degrees
    Longitude (deg. E)
    Longitude of sample in decimal degrees, east (Source: producer defined)
    Range of values
    Minimum:-123.5677
    Maximum:-123.5616
    Units:decimal degrees
    Replicate
    Number of replicate collected at a single site. Replicate number for the sample given when collected in the field (Source: producer defined)
    Range of values
    Minimum:1
    Maximum:6
    Units:Integers
    Phosphate concentration
    Concentration of ortho-phosphate in the sample. NS indicates that no sample was collected. (Source: producer defined.)
    Range of values
    Minimum:0.03
    Maximum:0.55
    Units:micromolar
    Nitrate + Nitrite concentration
    Concentration of nitrate and nitrite in the sample. NS indicates that no sample was collected. (Source: producer defined)
    Range of values
    Minimum:0.04
    Maximum:17.49
    Units:micromolar
    Ammonium concentration
    Concentration of ammonium in the sample. NS indicates that no sample was collected. (Source: producer defined)
    Range of values
    Minimum:0.03
    Maximum:52.8
    Units:micromolar
    Salinity
    Concentration of salt in the sample. NS indicates that no sample was collected. (Source: producer defined)
    Range of values
    Minimum:0.02
    Maximum:4.55
    Units:PSU (practical salinity units)
    Temperature
    Water temperature. NS indicates that no sample was collected. (Source: producer defined)
    Range of values
    Minimum:5.79
    Maximum:20.98
    Units:degrees Celcius
    Turbidity
    Concentration of suspended solids in the sample. NS indicates that no sample was collected. (Source: producer defined)
    Range of values
    Minimum:0.30
    Maximum:305.60
    Units:NTU (Nephelometric Turbidity Unit)
    Dissolved oxygen
    Concentration of dissolved oxygen in the sample. NS indicates that no sample was collected. (Source: producer defined)
    Range of values
    Minimum:6.57
    Maximum:13.80
    Units:mg/L
    % Dissolved oxygen
    Percent dissolved oxygen in the sample. NS indicates that no sample was collected. (Source: producer defined)
    Range of values
    Minimum:62.90
    Maximum:149.20
    Units:percent
    pH
    Concentration of hydrogen ions in the sample. NS indicates that no sample was collected. (Source: producer defined)
    Range of values
    Minimum:6.30
    Maximum:8.05
    Units:no units
    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
    • Jeffrey J. Duda
    • Matthew M. Beirne
    • Rebecca Paradis
  2. Who also contributed to the data set?
    Jeffrey Duda
  3. To whom should users address questions about the data?
    Jeffrey Duda
    U.S. Geological Survey, Western Fisheries Science Center
    Research Geologist
    6505 NE 65th Street
    Seattle, WA

    206-526-2532 (voice)
    jduda@usgs.gov

Why was the data set created?

Data were obtained to assess the change in water quality in the Elwha estuary following the removal of two dams on the Elwha River between 2011 and 2014.

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: 22-Jun-2006 (process 1 of 26)
    Water samples were collected at two locations in June 2006. A hand-held global positioning system was used to determine the location of the sampling location.
    Date: 20-Jul-2006 (process 2 of 26)
    Water samples were collected at two locations in July 2006. A hand-held global positioning system was used to determine the location of the sampling location.
    Date: 31-Aug-2006 (process 3 of 26)
    Water samples were collected at two locations in August 2006. A hand-held global positioning system was used to determine the location of the sampling location.
    Date: 29-Sep-2006 (process 4 of 26)
    Water samples were collected at two locations in September 2006. A hand-held global positioning system was used to determine the location of the sampling location.
    Date: 24-Oct-2006 (process 5 of 26)
    Water samples were collected at two locations in October 2006. A hand-held global positioning system was used to determine the location of the sampling location.
    Date: 29-May-2007 (process 6 of 26)
    Analysis of nutrient samples and calibration of the continuous flow instrument follow the protocols of the WOCE Hydrographic Program. Samples were analyzed using a Seal Analytical AA3 at the University of Washington marine chemistry lab.
    Date: 23-Mar-2007 (process 7 of 26)
    Water samples were collected at one location in March 2007. A hand-held global positioning system was used to determine the location of the sampling location.
    Date: 18-Apr-2007 (process 8 of 26)
    Water samples were collected at two locations in April 2007. A hand-held global positioning system was used to determine the location of the sampling location.
    Date: 31-May-2007 (process 9 of 26)
    Water samples were collected at two locations in May 2007. A hand-held global positioning system was used to determine the location of the sampling location.
    Date: 28-Jun-2007 (process 10 of 26)
    Water samples were collected at two locations in June 2007. A hand-held global positioning system was used to determine the location of the sampling location.
    Date: 08-Aug-2007 (process 11 of 26)
    Water samples were collected at two locations in August 2007. A hand-held global positioning system was used to determine the location of the sampling location.
    Date: 30-Aug-2007 (process 12 of 26)
    Water samples were collected at two locations in August 2007. A hand-held global positioning system was used to determine the location of the sampling location.
    Date: 27-Jan-2008 (process 13 of 26)
    Analysis of nutrient samples and calibration of the continuous flow instrument follow the protocols of the WOCE Hydrographic Program. Samples were analyzed using a Seal Analytical AA3 at the University of Washington marine chemistry lab.
    Date: 28-Jun-2013 (process 14 of 26)
    Water samples were collected at five locations in June 2013. A hand-held global positioning system was used to determine the location of the sampling location.
    Date: 23-Jul-2013 (process 15 of 26)
    Water samples were collected at five locations in July 2013. A hand-held global positioning system was used to determine the location of the sampling location.
    Date: 22-Aug-2013 (process 16 of 26)
    Water samples were collected at five locations in August 2013. A hand-held global positioning system was used to determine the location of the sampling location.
    Date: 24-Oct-2013 (process 17 of 26)
    Water samples were collected at three locations in October 2013. A hand-held global positioning system was used to determine the location of the sampling location.
    Date: 03-Feb-2014 (process 18 of 26)
    Analysis of nutrient samples was done at the University of California Santa Barbara Marine Science Institute analytical lab using flow injection analysis on a QuickChem 8000.
    Date: 09-Mar-2014 (process 19 of 26)
    Water samples were collected at four locations in March 2014. A hand-held global positioning system was used to determine the location of the sampling location.
    Date: 26-Apr-2014 (process 20 of 26)
    Water samples were collected at four locations in April 2014. A hand-held global positioning system was used to determine the location of the sampling location.
    Date: 13-Jun-2014 (process 21 of 26)
    Water samples were collected at five locations in June 2014. A hand-held global positioning system was used to determine the location of the sampling location.
    Date: 25-Jul-2014 (process 22 of 26)
    Water samples were collected at five locations in July 2014. A hand-held global positioning system was used to determine the location of the sampling location.
    Date: 12-Oct-2014 (process 23 of 26)
    Water samples were collected at five locations in October 2014. A hand-held global positioning system was used to determine the location of the sampling location.
    Date: 17-Dec-2014 (process 24 of 26)
    Analysis of nutrient samples was done at the University of California Santa Barbara Marine Science Institute analytical lab using flow injection analysis on a QuickChem 8000.
    Date: 19-Oct-2020 (process 25 of 26)
    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 26 of 26)
    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?
    Detection limits for dissolved nutrients samples were determined independently by the University of Washington Marine Chemistry Lab and the University of California Santa Barbara Marine Science Institute analytical lab (UW/UCSB detection limits: PO4 = 0.03/0.1 mm; NO3 = 0.15/0.2 mm; NH4 = 0.12/0.1 mm).
  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 and the Lower Elwha Klallam Tribe 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

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

Who wrote the metadata?

Dates:
Last modified: 13-Oct-2021
Metadata author:
Jeffrey Duda
U.S. Geological Survey, Western Fisheries Research Center
Research Ecologist
6505 NE 65th Street
Seattle, WA
United States of America

206-526-2532 (voice)
jduda@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_water_quality_2006-2014_metadata.faq.html>
Generated by mp version 2.9.50 on Thu Oct 14 14:47:20 2021