Christopher S Magirl Christopher A Curran Robert C Hilldale 2018 Comma-separated values data release doi:10.5066/F7PG1QWC Pacific Coastal and Marine Science Center, Santa Cruz, California U.S. Geological Survey https://doi.org/10.5066/F7PG1QWC https://www.sciencebase.gov/catalog/file/get/5a25e9f2e4b03852baf67f06 Andrew C. Ritchie Christopher A Curran Christopher S Magirl Jennifer A Bountry Robert C Hilldale Timothy J Randle Jefferey J Duda 2018 data release doi:10.5066/F7PG1QWC Pacific Coastal and Marine Science Center, Santa Cruz, California U.S. Geological Survey https://doi.org/10.5066/F7PG1QWC Daily values of discharge and sediment loads were measured and estimated at U.S. Geological Survey gaging station 12046260, on the Elwha River at the diversion near Port Angeles, Washington. Daily data are reported from September 15, 2011 to September 30, 2016. Specific data include (1) date; (2) discharge; (3) suspended-sediment concentration and one standard-deviation bounds; (4) percentage of fine-grained particles (silts and clays) in suspension; (5) loads of total suspended-sediment, fine-grained particles in suspension, and sand in suspension; (6) gauged bedload for particles between 2-16 mm and greater than 16 mm; and (7) estimated bedload for particles smaller than 2 mm. Data were collected to quantify the flux of water, suspended sediment, and bedload sediment at the U.S. Geological Survey gaging station 12046260, Elwha River at Diversion Near Port Angeles, WA. The gaging station 12046260 is downstream of the 2011-2014 dam removal of two large dams on the Elwha River. These discharge and sediment flux data were combined with morphological data collected by collaborative researchers and combined into a total river sediment budget during and after dam removal. 20110915 20160930 ground condition Complete None planned -123.601338 -123.548927 48.151755 48.001990 USGS Metadata Identifier USGS:5a25e9f2e4b03852baf67f06 USGS Thesaurus field inventory and monitoring sediment transport stream discharge Marine Realms Information Bank (MRIB) keywords river channel river bank sediment deposition Data Categories for Marine Planning Substrate ISO 19115 Topic Category inlandWaters None U.S. Geological Survey USGS Coastal and Marine Geology CMGP Pacific Coastal and Marine Science Center PCMSC U.S. Bureau of Reclamation USBR Geographic Names Index System (GNIS) Elwha River Elwha Dam (historical) Glines Canyon Dam (historical) Olympic National Park Lake Aldwell (historical) Lake Mills (historical) State of Washington 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 (USGS), Environmental Protection Agency, National Park Service, and the U.S. Bureau of Reclamation as the originators of the dataset and in products derived from these data. Christopher S Magirl U.S. Geological Survey, Arizona Water Science Center mailing and physical

520 N Park Ave, Suite 221

Tucson Arizona 85719 USA 520-670-3315 magirl@usgs.gov Data collection was funded by U.S. Geological Survey, Environmental Protection Agency, National Park Service, and U.S. Bureau of Reclamation Robert C Hilldale Wayne O Carpenter Bradley Goodwiller James P Chambers Timothy J Randle 2015 online Journal of Hydraulic Engineering, 141(3) https://doi.org/10.1061/(ASCE)HY.1943-7900.0000975 Christopher S. Magirl Robert C. Hilldale Christopher A. Curran Jeffrey J. Duda Timothy D. Straub Marian Domanski James R. Foreman 2015 http://www.sciencedirect.com Geomorphology, v. 246, p. 669-686 https://doi.org/10.1016/j.geomorph.2014.12.032 All data fall within expected ranges. All data fall within expected ranges. 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. No formal positional accuracy tests were conducted No formal positional accuracy tests were conducted 15-minute stage data and discharge rating curves from McDonald Bridge gage (USGS Gage 12045500) were used with a routing time and precipitation volume-based adjustment model to derive daily discharge estimates for the diversion weir reported here. Daily records of suspended-sediment concentration (SSC) were calculated using a combination of standard flow-weighted suspended-sediment samples, automated point-sampler daily composite samples, and three sediment-surrogate instruments--two optical turbidimeters and one acoustic Doppler velocity meter (ADVM)--using established techniques (Magirl and others, 2015). Daily bedload sediment transport values for three size fractions were calculated using a combination of steel bedload-impact plates and physical bedload sampling during November, 2012; March, May, and June 2013; and April 2014 at the Diversion Weir gauge (Magirl and others, 2015; Hilldale and others, 2015). These techniques estimated the proportion of bedload in the > 16mm and the 2-16mm size classes, but did not capture bedload transport of particles smaller than 2 mm, which were estimated from a combination of regional and comparative studies in high-sediment load rivers--including other dam removal studies--using constant ratios of measured total bedload to total sediment discharge of 15 percent for water year 2012 and 25 percent for later years. 2017 Corrected name of theme keyword thesaurus from ISO 19115 Topic Categories to Category. 20180717 Susan A Cochran U.S. Geological Survey, Pacific Coastal and Marine Science Center mailing and physical

2885 Mission St.

Santa Cruz CA 95060 United States 831-460-7545 scochran@usgs.gov Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed. 20201019 U.S. Geological Survey VeeAnn A. Cross Marine Geologist Mailing and Physical

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov Data were collected at USGS gaging station 12046260, on Elwha River, northern Washington State, on the right bank 3.5 miles upstream from the river mouth (latitude: 48.11172, longitude: -123.55151). Point Elwha_DailySedimentLoads_2011to2016.csv Suspended sediment, discharge, and bedload data. Producer defined Day Date of the daily values reported in columns. Producer defined. 09/15/2011 09/30/2016 Daily Discharge (m3/s) Daily discharge Producer defined 6.330321507 399.501183 cubic meters per second Daily SSC (mg/L) Daily suspended-sediment concentration; NA means no direct value was measured Producer defined 0.2274661 13819.789500 milligrams per liter Upper SSC bound (+1SD) Upper uncertainty bound, one standard deviation, of suspended-sediment concentration measurement; NA means no direct value was measured Producer defined 0.288613508 17224.300000 milligrams per liter Lower SSC bound (-1SD) Lower uncertainty bound, one standard deviation, of suspended-sediment concentration measurement; NA means no direct value was measured Producer defined 0.179273730 12133.928400 milligrams per liter Ave fraction fines (based on two turbidimeters) Average fraction of fine-grained particles (silts and clays) in suspension based on the data of two turbidimeters; NA means no direct value was measured Producer defined 0.41 0.994 fraction Daily Suspended-Sediment Load (tonnes) Daily suspended-sediment load Producer defined 0.1 429806.7 tonnes Daily SS Load of fines (tonnes) Daily suspended-sediment load of fine-grained particles (silts and clays) Producer defined 0.1 269484.4 tonnes Daily SS Load of sand (tonnes) Daily suspended-sediment load of sand-sized particles Producer defined 0 160322.3 tonnes Remarks Used to flag days when sensor failure precluded direct sediment measurement at the gage. If data flagged, "Estimated," the suspended-sediment data for that day were estimated using linear interpolation for day before and after sensor failure when sediment data were measured. Producer defined NA Flag to indicate whether data were interpolated; “NA” means data were not interpolated Producer-defined Estimated Flag to indicate whether data were interpolated; “estimated” means data were interpolated Producer-defined Daily Total gauged > 2-mm bedload (tonnes) Daily total gauged bedload of particles larger than 2 mm; NA means no direct value was measured Producer defined 0.000000 27813.617110 tonnes Daily gauged bedload for 2-16mm particles (tonnes) Daily total gauged bedload of particles larger than 2 mm and smaller than 16 mm; NA means no direct value was measured Producer defined 0.000000 22023.800000 tonnes Daily gauged bedload for >16mm particles (tonnes) Daily total gauged bedload of particles larger than 16 mm; NA means no direct value was measured Producer defined 0.000000 6536.200022 tonnes Estimated daily ungauged bedload (tonnes) Estimated ungauged portion of particles in bedload flux that are less than 2 mm. Estimate is based on an assumed bedload-to-total-load ratio of 15 percent in year 1 of dam removal and 25 percent in years 2-5 of dam removal. NA means no direct value was measured Producer defined -7710.000000 104443.874200 tonnes Total sediment discharge (tonnes) Total daily sediment discharge. Included gauged suspended-sediment load, gauged bedload, and estimated bedload Producer defined 0.100000 466989.066700 tonnes Release period Additional information flag from Magirl and others (2015) describing 5 unique stages of sediment-release conditions during the first two years of dam removal. NA means no direct value was measured Producer defined early removal "early removal," is early period of dam removal when relatively little sediment was transported Producer-defined Lake Aldwell release "Lake Aldwell release," was the period when former Lake Aldwell reservoir was the dominant source of sediment Producer-defined summer 1 "summer 1," was the period of relatively low sediment transport during low flows of the first summer of dam removal Producer-defined Lake Mills release "Lake Mills release," was the period when former Lake Mills reservoir was the dominant source of sediment Producer-defined summer 2 "summer 2" was the period of relatively low sediment transport during low flows of the first summer of dam removal Producer-defined Project year Identifies the year of dam removal from year 1 to 5, loosely based on water year. Producer defined proj year 1 proj year 5 year U.S. Geological Survey - ScienceBase mailing and physical

Denver Federal Center, Building 810, Mail Stop 302

Denver CO 80225 United States 1-888-275-8747 sciencebase@usgs.gov data are downloadable in .csv format (Elwha_DailySedimentLoads_2011to2016.csv) along with CMGDS 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. csv Microsoft Excel 2016 MSO (16.0.4549.1000) 64-bit zip file contains the csv table and associated metadata 0.096 https://www.sciencebase.gov/catalog/file/get/5a25e9f2e4b03852baf67f06 https://doi.org/10.5066/F7PG1QWC Data can be downloaded via the Internet None. This dataset is presented in comma-separated values (CSV) format and can be opened with text-editing software or spreadsheet software (for example, Microsoft Excel). 20201019 Christopher S Magirl U.S. Geological Survey, Arizona Water Science Center Supervisory Hydrologist mailing and physical

520 N Park Ave, Suite 221

Tucson Arizona 85719 USA 520-670-3315 magirl@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998