Andrew W. Stevens Guy R. Gelfenbaum Jonathan A. Warrick Ian M. Miller Heather M. Weiner 20220311 comma-delimited text data release DOI:10.5066/P9KXA2SI Pacific Coastal and Marine Science Center, Santa Cruz, California U.S. Geological Survey https://doi.org/10.5066/P9KXA2SI https://www.sciencebase.gov/catalog/item/6171e880d34ea36449a86d7d Andrew W. Stevens Guy R. Gelfenbaum Jonathan A. Warrick Ian M. Miller Heather M. Weiner 2022 data release DOI:10.5066/P9KXA2SI Pacific Coastal and Marine Science Center, Santa Cruz, CA U.S. Geological Survey https://doi.org/10.5066/P9KXA2SI This portion of the data release presents sediment grain-size data from samples collected on the Elwha River delta, Washington, in July 2018 (USGS Field Activity 2018-648-FA). Surface sediment was collected from 39 locations using a small ponar, or 'grab', sampler from the R/V Frontier in water depths between about 1 and 17 m around the delta. An additional 35 samples were collected by hand at low tide. A hand-held global satellite navigation system (GNSS) receiver was used to determine the locations of sediment samples. The grain size distributions of suitable samples were determined using standard techniques developed by the USGS Pacific Coastal and Marine Science Center sediment lab. Grab samples that yielded less than 50 g of sediment were omitted from analysis. The grain-size data are provided in a comma-delimited spreadsheet (.csv). Data were obtained to assess the coastal geomorphic response following the removal of two dams on the Elwha River. These data are intended for science researchers, students, policy makers, and the general public. Additional information about the field activities from which these data were derived is available online at: https://cmgds.marine.usgs.gov/fan_info.php?fan=2018-648-FA Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. 20180723 20180726 Ground condition at time data were collected Complete None planned -123.583128 -123.528831 48.154187 48.139595 ISO 19115 Topic Category oceans Data Categories for Marine Planning Substrate USGS Thesaurus ocean processes sediment transport grain-size analysis Marine Realms Information Bank (MRIB) keywords sediment Global Positioning System (GPS) observations None U.S. Geological Survey USGS Coastal and Marine Hazards and Resources Program CMHRP Pacific Coastal and Marine Science Center PCMSC USGS Metadata Identifier USGS:6171e880d34ea36449a86d7d Geographic Names Information System (GNIS) Clallam County Olympic Peninsula Strait of Juan de Fuca Elwha River None 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. This information is not intended for navigation purposes. U.S. Geological Survey, Pacific Coastal and Marine Science Center PCMSC Science Data Coordinator mailing and physical

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Santa Cruz CA 95060 831-427-4747 pcmsc_data@usgs.gov MATLAB Version: 9.8.0.1396136 (R2020a) Robert Louis Folk William C. Ward 1957 Folk, R.L., and Ward, W.C., 1957, Brazos River bar; a study in the significance of grain size parameters: Journal of Sedimentary Research, v. 27, n. 1, p. 3-26. https://doi.org/10.1306/74D70646-2B21-11D7-8648000102C1865D Douglas Lamar Inman 1952 Inman, D.L., 1952, Measures for describing the size distribution of sediments: Journal of Sedimentary Research, v. 22, n. 3, p. 125-145. https://doi.org/10.1306/D42694DB-2B26-11D7-8648000102C1865D No formal attribute accuracy tests were conducted. No formal logical accuracy tests were conducted. 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. The locations of samples were determined using a Garmin 78s handheld global satellite navigation systems (GNSS) receiver capable of receiving wide area augmentation system (WAAS) signals. The manufacturer reported accuracy for horizontal positions is 3-5 m while receiving WAAS signals. No formal positional accuracy tests were conducted Surface sediment was collected on July 23, 2018 at a total of 39 locations using a small ponar, or 'grab', sampler from the R/V Frontier in water depths between about 1 and 17 m around the delta. An additional 35 samples were collected by hand at low tide between July 24 and July 26, 2018. A hand-held global satellite navigation system (GNSS) receiver was used to determine the locations of sediment samples. Grab samples that yielded less than 50 g of sediment were omitted from analysis. 20180726 The grain-size distributions of suitable samples were determined in the USGS Pacific Coastal and Marine Science Center sediment lab. Approximately 20 g of sediment was sub-sampled and 10 mL of 35 percent hydrogen peroxide was added to remove organic material in the sample. The sample was heated at 250 degrees C to remove any remaining hydrogen peroxide and was placed in an ultrasonic bath to liberate the fine fraction. Subsequently, the sample was centrifuged for 1.5 hours to remove soluble salts. Samples were funneled through 2 mm and 63 um sieves to separate the gravel (greater than 2 mm), sand (63 um to 2 mm), and mud (less than 63 um). The sand and gravel fractions were dried in an 80-degree C oven and weighed. Five mL of sodium hexametaphosphate was added to the mud fraction and a 20 mL aliquot was taken from a 1 L graduated cylinder to determine the weight of the mud. The particle-size distribution of the mud and sand fractions was analyzed separately using a Beckman Coulter LS 13 320, and the gravel, sand, and mud results were integrated into a single grain-size distribution for each sample. 20190329 Point Point 74 0.000001 0.000001 Decimal degrees WGS1984 WGS1984 6378137.0 298.257223563 Attribute Table Table containing attribute information associated with the dataset Producer defined FACS ID Unique U.S. Geological Survey field activity identifier producer defined Unique identifier for the U.S. Geological Survey field activity Sample ID Name of sample producer defined Unique identifier for the sample used given in the field Date Collected Date of sample collection in mm/dd/yyyy format producer defined 7/23/2018 7/26/2018 Dates in mm/dd/yyyy format Time Time of sample collection in HH:MM:SS format relative to Greenwich Mean Time (GMT) producer defined 00:00:00 23:59:59 Times in HH:MM:SS format Latitude Latitude of sample in decimal degrees, north producer defined 48.139595 48.154187 decimal degrees Longitude Longitude of sample in decimal degrees, east producer defined -123.583128 -123.528831 decimal degrees Sample Type Type of sample collected Produce defined Surface Sample collected on land by hand Producer defined Grab Sample collected with grab sampler from boat Producer defined Lab ID Name of sample identifier in YY-FFFFF-XX format, where YY is the 2-digit year (for example 16=2016, 99=1999), FFFFF is the 5-digit field-activity-number (FAN) ID code, and XX is a sequential number given to the sample in the lab. Producer defined Unique identifier for the sample given during analysis in the lab Wt. percent in -2.00 phi bin Weight percent of sample with grain diameter greater than -2.00 phi. producer defined 0 100 percentage Wt. percent in -1.00 phi bin Weight percent of sample with grain diameter between -2.00 and -1.00 phi. producer defined 0 100 percentage Wt. percent in -0.75 phi bin Weight percent of sample with grain diameter between -1.00 and -0.75 phi. producer defined 0 100 percentage Wt. percent in -0.50 phi bin Weight percent of sample with grain diameter between -0.75 and -0.50 phi. producer defined 0 100 percentage Wt. percent in -0.25 phi bin Weight percent of sample with grain diameter between -0.50 and -0.25 phi. producer defined 0 100 percentage Wt. percent in 0.00 phi bin Weight percent of sample with grain diameter between -0.25 and 0.00 phi. producer defined 0 100 percentage Wt. percent in 0.25 phi bin Weight percent of sample with grain diameter between 0.00 and 0.25 phi. producer defined 0 100 percentage Wt. percent in 0.50 phi bin Weight percent of sample with grain diameter between 0.25 and 0.50 phi. producer defined 0 100 percentage Wt. percent in 0.75 phi bin Weight percent of sample with grain diameter between 0.50 and 0.75 phi. producer defined 0 100 percentage Wt. percent in 1.00 phi bin Weight percent of sample with grain diameter between 0.75 and 1.00 phi. producer defined 0 100 percentage Wt. percent in 1.25 phi bin Weight percent of sample with grain diameter between 1.00 and 1.25 phi. producer defined 0 100 percentage Wt. percent in 1.50 phi bin Weight percent of sample with grain diameter between 1.25 and 1.50 phi. producer defined 0 100 percentage Wt. percent in 1.75 phi bin Weight percent of sample with grain diameter between 1.50 and 1.75 phi. producer defined 0 100 percentage Wt. percent in 2.00 phi bin Weight percent of sample with grain diameter between 1.75 and 2.00 phi. producer defined 0 100 percentage Wt. percent in 2.25 phi bin Weight percent of sample with grain diameter between 2.00 and 2.25 phi. producer defined 0 100 percentage Wt. percent in 2.50 phi bin Weight percent of sample with grain diameter between 2.25 and 2.50 phi. producer defined 0 100 percentage Wt. percent in 2.75 phi bin Weight percent of sample with grain diameter between 2.50 and 2.75 phi. producer defined 0 100 percentage Wt. percent in 3.00 phi bin Weight percent of sample with grain diameter between 2.75 and 3.00 phi. producer defined 0 100 percentage Wt. percent in 3.25 phi bin Weight percent of sample with grain diameter between 3.00 and 3.25 phi. producer defined 0 100 percentage Wt. percent in 3.50 phi bin Weight percent of sample with grain diameter between 3.25 and 3.50 phi. producer defined 0 100 percentage Wt. percent in 3.75 phi bin Weight percent of sample with grain diameter between 3.50 and 3.75 phi. producer defined 0 100 percentage Wt. percent in 4.00 phi bin Weight percent of sample with grain diameter between 3.75 and 4.00 phi. producer defined 0 100 percentage Wt. percent in 4.25 phi bin Weight percent of sample with grain diameter between 4.00 and 4.25 phi. producer defined 0 100 percentage Wt. percent in 4.50 phi bin Weight percent of sample with grain diameter between 4.25 and 4.50 phi. producer defined 0 100 percentage Wt. percent in 4.75 phi bin Weight percent of sample with grain diameter between 4.50 and 4.75 phi. producer defined 0 100 percentage Wt. percent in 5.00 phi bin Weight percent of sample with grain diameter between 4.75 and 5.00 phi. producer defined 0 100 percentage Wt. percent in 5.25 phi bin Weight percent of sample with grain diameter between 5.00 and 5.25 phi. producer defined 0 100 percentage Wt. percent in 5.50 phi bin Weight percent of sample with grain diameter between 5.25 and 5.50 phi. producer defined 0 100 percentage Wt. percent in 5.75 phi bin Weight percent of sample with grain diameter between 5.50 and 5.75 phi. producer defined 0 100 percentage Wt. percent in 6.00 phi bin Weight percent of sample with grain diameter between 5.75 and 6.00 phi. producer defined 0 100 percentage Wt. percent in 6.25 phi bin Weight percent of sample with grain diameter between 6.00 and 6.25 phi. producer defined 0 100 percentage Wt. percent in 6.50 phi bin Weight percent of sample with grain diameter between 6.25 and 6.50 phi. producer defined 0 100 percentage Wt. percent in 6.75 phi bin Weight percent of sample with grain diameter between 6.50 and 6.75 phi. producer defined 0 100 percentage Wt. percent in 7.00 phi bin Weight percent of sample with grain diameter between 6.75 and 7.00 phi. producer defined 0 100 percentage Wt. percent in 7.25 phi bin Weight percent of sample with grain diameter between 7.00 and 7.25 phi. producer defined 0 100 percentage Wt. percent in 7.50 phi bin Weight percent of sample with grain diameter between 7.25 and 7.50 phi. producer defined 0 100 percentage Wt. percent in 7.75 phi bin Weight percent of sample with grain diameter between 7.50 and 7.75 phi. producer defined 0 100 percentage Wt. percent in 8.00 phi bin Weight percent of sample with grain diameter between 7.75 and 8.00 phi. producer defined 0 100 percentage Wt. percent in 8.25 phi bin Weight percent of sample with grain diameter between 8.00 and 8.25 phi. producer defined 0 100 percentage Wt. percent in 8.50 phi bin Weight percent of sample with grain diameter between 8.25 and 8.50 phi. producer defined 0 100 percentage Wt. percent in 8.75 phi bin Weight percent of sample with grain diameter between 8.50 and 8.75 phi. producer defined 0 100 percentage Wt. percent in 9.00 phi bin Weight percent of sample with grain diameter between 8.75 and 9.00 phi. producer defined 0 100 percentage Wt. percent in 9.25 phi bin Weight percent of sample with grain diameter between 9.00 and 9.25 phi. producer defined 0 100 percentage Wt. percent in 9.50 phi bin Weight percent of sample with grain diameter between 9.25 and 9.50 phi. producer defined 0 100 percentage Wt. percent in 9.75 phi bin Weight percent of sample with grain diameter between 9.50 and 9.75 phi. producer defined 0 100 percentage Wt. percent in 10.00 phi bin Weight percent of sample with grain diameter between 9.75 and 10.00 phi. producer defined 0 100 percentage Wt. percent in 10.25 phi bin Weight percent of sample with grain diameter between 10.00 and 10.25 phi. producer defined 0 100 percentage Wt. percent in 10.50 phi bin Weight percent of sample with grain diameter between 10.25 and 10.50 phi. producer defined 0 100 percentage Wt. percent in 10.75 phi bin Weight percent of sample with grain diameter between 10.50 and 10.75 phi. producer defined 0 100 percentage Wt. percent in 11.00 phi bin Weight percent of sample with grain diameter between 10.75 and 11.00 phi. producer defined 0 100 percentage Wt. percent in 11.25 phi bin Weight percent of sample with grain diameter between 11.00 and 11.25 phi. producer defined 0 100 percentage Wt. percent in 11.50 phi bin Weight percent of sample with grain diameter between 11.25 and 11.50 phi. producer defined 0 100 percentage Wt. percent in 12.00 phi bin Weight percent of sample with grain diameter between 11.50 and 12.00 phi. producer defined 0 100 percentage Wt. percent in 13.00 phi bin Weight percent of sample with grain diameter between 12.00 and 13.00 phi. producer defined 0 100 percentage Percent Gravel percent of sample greater than 2 mm. producer defined 0 100 percentage Percent Sand percent of sample less than 2 mm and greater than 63 microns. producer defined 0 100 percentage Percent Silt percent of sample less than 63 microns and greater than 4 microns. producer defined 0 100 percentage Percent Clay percent of sample less than 4 microns. producer defined 0 100 percentage Percent Mud percent of sample less than 63 microns. producer defined 0 100 percentage D5 Phi Phi size at D5 for sample. producer defined -4 13 Phi size D10 Phi Phi size at D10 for sample. producer defined -4 13 Phi size D16 Phi Phi size at D16 for sample. producer defined -4 13 Phi size D25 Phi Phi size at D25 for sample. producer defined -4 13 Phi size D50 Phi Phi size at D50, or average particle diameter by mass, for sample. producer defined -4 13 Phi size D75 Phi Phi size at D75 for sample. producer defined -4 13 Phi size D84 Phi Phi size at D84 for sample. producer defined -4 13 Phi size D90 Phi Phi size at D90 for sample. producer defined -4 13 Phi size D95 Phi Phi size at D95 for sample. producer defined -4 13 Phi size F-W Median Phi size median for sample by Folk and Ward (1957) method. producer defined -3.00 6.66 Phi size F-W Mean Phi size mean for sample by Folk and Ward (1957) method. producer defined -3.00 6.90 Phi size F-W Sorting sorting for sample by Folk and Ward (1957) method. producer defined 0.40 2.65 Phi size F-W Skewness skewness for sample by Folk and Ward (1957) method. producer defined -0.67 1.10 Phi size F-W Kurtosis Kurtosis for sample by Folk and Ward (1957) method. producer defined -101.18 2.94 Phi size Inman Median Phi size median for sample by Inman (1952) method. producer defined -3.00 6.66 Phi size Inman Mean Phi size mean for sample by Inman (1952) method. producer defined -3.00 7.02 Phi size Inman Sorting sorting for sample by Inman (1952) method. producer defined 0.16 2.93 Phi size Inman Skew 16-84 skewness for sample (D16-D84) by Inman (1952) method. producer defined -0.84 2.21 Phi size Inman Skew 05-95 skewness for sample (D5-D95) by Inman (1952) method. producer defined -1.62 3.10 Phi size Inman Kurtosis Kurtosis for sample by Inman (1952) method. producer defined 0.26 12.20 Phi size Moment 1 Mean moment measure of mean. producer defined -2.12 6.62 Phi size Moment 2 Variance moment measure of variance. producer defined 0.01 7.28 Phi size Moment 3 Skewness moment measure of skewness. producer defined -0.43 25.85 Phi size Moment 4 Kurtosis moment measure of kurtosis. producer defined 1.89 919.59 Phi size The first line of the csv file is a header line. U.S. Geological Survey U.S. Geological Survey - Science Base U.S. Geological Survey mailing and physical

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Denver CO 80225 USA 1-888-275-8747 sciencebase@usgs.gov Surface-sediment grain-size data are available as a comma-delimited text file (ew18_grainsize.csv), along with associated FGDC-compliant metadata. 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. comma-delimited text MATLAB Version: 9.8.0.1396136 (R2020a) comma-delimited text file No compression applied 0.056 https://www.sciencebase.gov/catalog/file/get/6171e880d34ea36449a86d7d?name=ew18_grainsize.csv https://www.sciencebase.gov/catalog/item/6171e880d34ea36449a86d7d https://doi.org/10.5066/P9KXA2SI https://doi.org/10.5066/F72N51GC Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to download the surface grain-size data. The second link points to a landing page with the grain-size data and metadata. The third link points to the landing page for the July 2018 data release. The fourth link points to a landing page for all of the Elwha annual surveys. None 20220311 U.S. Geological Survey, Pacific Coastal and Marine Science Center PCMSC Science Data Coordinator mailing and physical

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Santa Cruz CA 95060 831-427-4747 pcmsc_data@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998