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Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts U.S. Geological Survey, Pacific Coastal and Marine Science Center U.S. Geological Survey - ScienceBase Andrew C Ritchie Christopher A Curran Christopher S Magirl More... Categories Data (6) Tag Types Theme (8) Place (8) Tag Schemes None (8) USGS Thesaurus (8) Marine Realms Information Bank (MRIB) Keywords (7) Geographic Names Information System (3) Geographic Names Information System (GNIS) (2) Data Categories for Marine Planning (8) Geographic Names Information Systems (2) More... View Results as: JSON ATOM CSV

Suspended sediment concentration data in the Elwha River, Washington, September 2011 to September 2016 This data release provides 15-minute data of suspended-sediment concentration and fine (less than 0.0625 mm) suspended-sediment concentration during the removal of 2 large dams on the Elwha River from September 2011 to September 2016. Data are derived from regression relations with turbidity at the USGS gaging station Elwha River at the Diversion (no.12046260). Categories: Data; Tags: CMPG, Clallam County, Coastal and Marine Geology Program, Elwha Dam (historical), Elwha River, All tags... Glines Canyon Dam (historical), Olympic National Park, PCMSC, Pacific Coastal and Marine Science Center, State of Washington, Substrate, U.S. Bureau of Reclamation, U.S. Geological Survey, USBR, USGS, field inventory and monitoring, inlandWaters, river bank, river channel, sediment deposition, sediment transport, stream discharge, Fewer tags Orthomosaic images of the middle and lower Elwha River, Washington, 2012 to 2017 This dataset presents 28 georeferenced orthomosaic images of the middle and lower reaches of the Elwha River. Each mosaic image was created by stitching together thousands of individual photographs that were matched based on numerous unique tie points shared by the photographs. The individual photographs were taken by a plane-mounted camera during multiple flights over the study area spanning 2012 to 2017. Because each mosaic is orthogonal to the earth's surface and is georeferenced to real-world coordinates, changes to the river channel and surrounding morphology can be seen and measured, including channel width, river braiding, bar formation, and other metrics to assess responses of the river to the removal of... Tags: CMGP, Coastal and Marine Geology Program, Elwha Dam (historical), Elwha River, Glines Canyon Dam (historical), All tags... Lake Aldwell (historical), Lake Mills (historical), NPS, National Park Service, Olympic National Park, PCMSC, Pacific Coastal and Marine Science Center, State of Washington, Substrate, U.S. Bureau of Reclamation, U.S. Geological Survey, USBR, USGS, aerial photography, digital elevation models, field inventory and monitoring, image collections, image mosaics, inlandWaters, lidar, remote sensing, river bank, river channel, river reaches, river systems, sediment deposition, time series datasets, topographic maps, Fewer tags Digital elevation models (DEMs) of the lower Elwha River, Washington, water year 2013 to 2016 Digital elevation models (DEMs) of the lower Elwha River, Washington, were created by synthesizing lidar and PlaneCam Structure-from-Motion (SfM) data. Lidar and still digital photographs were collected by airplane during surveys from 2012 to 2016. The digital photographs were used to create a SfM digital surface model. Each DEM represents the ending conditions for that water year (for example, the 2013 DEM represents conditions at approximately September 30, 2013). The final DEMs, presented here, were created from the most recent lidar before September 30 of a given year, supplemented with an error-corrected SfM model from a low-flow summer Elwha PlaneCam flight as close to 30 September as possible. This synthetic... Tags: CMGP, Coastal and Marine Geology Program, Elwha Dam (historical), Elwha River, Glines Canyon Dam (historical), All tags... NPS, National Park Service, PCMSC, Pacific Coastal and Marine Science Center, State of Washington, Substrate, U.S. Bureau of Reclamation, U.S. Geological Survey, USBR, USGS, digital elevation models, field inventory and monitoring, image collections, image mosaics, inlandWaters, lidar, river bank, river channel, river reaches, river systems, sediment deposition, time series datasets, topographic maps, Fewer tags Sediment grain size from the Elwha River, Washington, 2006 to 2017 The grain size of sediment on the riverbed was measured during 20 surveys on the Elwha River, Washington, between 2006 and 2017. Most data were collected along the same transects where channel topography was measured (see related child item in this data release: https://www.sciencebase.gov/catalog/item/5a989288e4b06990606de04b). Measurements of sediment ranging from medium sand to boulders were made using the CobbleCam digital photographic technique (Warrick and others, 2009), which uses a calibrated autocorrelation algorithm (Rubin, 2004) to calculate the mean grain size of sediment from pixels in downward-looking digital photographs. This technique yields grain-size values accurate to within 14 percent of those... Categories: Data; Tags: CMGP, Coastal and Marine Geology Program, Elwha Dam (historical), Elwha River, Glines Canyon Dam (historical), All tags... PCMSC, Pacific Coastal and Marine Science Center, State of Washington, Substrate, U.S. Geological Survey, USGS, field inventory and monitoring, grain-size analysis, gravel deposits, inlandWaters, river reaches, river systems, sediment transport, Fewer tags Daily sediment loads during and after dam removal in the Elwha River, Washington, 2011 to 2016 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. Categories: Data; Tags: CMGP, Coastal and Marine Geology, Elwha Dam (historical), Elwha River, Glines Canyon Dam (historical), All tags... Lake Aldwell (historical), Lake Mills (historical), Olympic National Park, PCMSC, Pacific Coastal and Marine Science Center, State of Washington, Substrate, U.S. Bureau of Reclamation, U.S. Geological Survey, USBR, USGS, field inventory and monitoring, inlandWaters, river bank, river channel, sediment deposition, sediment transport, stream discharge, Fewer tags Monthly bedload estimates, Elwha River, Washington, October 2015 to September 2016 Bedload sediment transport was calculated on the Elwha River, Washington to measure the amount of sediment transported along the riverbed during the 2016 water year. Bedload was measured using the Elwha bedload impact plate system (Hilldale and others, 2015). Physical bedload sampling by the U.S. Bureau of Reclamation for system calibration took place during November, 2012; March, May, and June 2013; and April 2014 at the Diversion Weir gauge (Magirl and others, 2015). Early in water year 2016 (year 5) the river formed an avulsion channel across the floodplain on river left, preventing a complete measurement of bedload passing the Diversion Weir gauge. As a result, bedload for water year 2016 (year 5 of the larger... Categories: Data; Tags: CMGP, Coastal and Marine Geology Program, Elwha Dam (historical), Elwha River, Glines Canyon Dam (historical), All tags... Lake Aldwell (historical), Lake Mills (historical), PCMSC, Pacific Coastal and Marine Science Center, State of Washington, Substrate, U.S. Bureau of Reclamation, U.S. Geological Survey, USBR, USGS, field inventory and monitoring, inlandWaters, river bank, river channel, river reaches, river systems, sediment deposition, sediment transport, sedimentation, sedimentology, suspended material (water), time series datasets, Fewer tags Upstream sediment contributions to Lake Mills on the Elwha River, Washington, 1926 to 2016 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. Categories: Data; Tags: CMGP, Coastal and Marine Geology Program, Elwha Dam (historical), Elwha River, Glines Canyon Dam (historical), All tags... Lake Aldwell (historical), Lake Mills (historical), PCMSC, Pacific Coastal and Marine Science Center, State of Washington, Substrate, U.S. Bureau of Reclamation, U.S. Geological Survey, USBR, USGS, field inventory and monitoring, inlandWaters, river bank, river channel, river reaches, river systems, sediment deposition, sediment transport, sedimentation, sedimentology, suspended material (water), time series datasets, unconsolidated deposits, Fewer tags River-channel topography on the Elwha River, Washington, 2006 to 2017 This portion of the data release presents topographic data collected at 5 study sites along Elwha River, Washington between 2006 and 2017. Elevations along channel-perpendicular transects were surveyed using a total station and prism rod. Initial geodetic control was established using static global positioning system (GPS) occupations. A total station was subsequently used to expand and maintain the survey control network at each site. All survey data were referenced to the NAD83 datum, using the UTM, zone 10, coordinate reference system. All elevations were referenced to the NAVD88 vertical datum. Based on repeat measurements of points with known positions, we estimated the horizontal and vertical accuracy of the... Categories: Data; Tags: Bathymetry and Elevation, CMGP, Coastal and Marine Geology Program, Elwha Dam (historical), Elwha River, All tags... Glines Canyon Dam (historical), PCMSC, Pacific Coastal and Marine Science Center, State of Washington, U.S. Geological Survey, USGS, field inventory and monitoring, gravel deposits, inlandWaters, river reaches, river systems, topographic mapping, topography, Fewer tags