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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).
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.
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We characterized seafloor sediment conditions near the mouth of the Elwha River from underwater photographs taken every four hours from September 2011 to December 2013. A digital camera was affixed to a tripod that was deployed in approximately 10 meters of water (Tripod location from September 2011 to April 2013: 48.15333, -123.55931; tripod location from April 2013 to December 2013: 48.15407, -123.55444). Each photograph was qualitatively characterized as one of six categories: (1) base, or no sediment; (2) low sediment; (3) medium sediment; (4) high sediment; (5) turbid; or (6) kelp. For base conditions, no sediment was present on the seafloor. Low sediment conditions were characterized by a light dusting of...
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This portion of the USGS data release presents topography data collected during surveys performed on the Elwha River delta, Washington, in May 2011 (USGS Field Activity Number W-04-11-PS). Topography data were collected on foot with global navigation satellite system (GNSS) equipment mounted on backpacks operating in Real-Time Kinematic (RTK) mode. A total of 3 GNSS backpacks, each equipped with a dual-frequency GNSS receiver and handheld data collector, were used during the survey. Differential corrections were transmitted at 1-Hz intervals by a VHF radio to the backpack GNSS receivers from a GNSS base station placed on a benchmark with known horizontal and vertical coordinates relative to the North American Datum...
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This portion of the USGS data release presents bathymetry data collected during surveys performed on the Elwha River delta, Washington in September 2010 (USGS Field Activity Number W-03-10-PS). Bathymetry data were collected using a small boat and a personal watercraft (PWC), each equipped with single-beam sonar systems and global navigation satellite system (GNSS) receivers. The sonar systems on the survey vessels consisted of an Odom Echotrac CV-100 single-beam echosounder and 200 kHz transducer with a 9° beam angle. Raw acoustic backscatter returns were digitized by the echosounder with a vertical resolution of 1.25 cm. Depths from the echosounders were computed using sound velocity profiles measured using a...
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Two dams on the Elwha River, Washington State, USA trapped over 20 million m3 of sediment, reducing downstream sediment fluxes and contributing to erosion of the river's coastal delta. The removal of the Elwha and Glines Canyon dams between 2011 and 2014 induced massive increases in river sediment supply and provided an unprecedented opportunity to examine the response of a delta system to changes in sediment supply. The U.S. Geological Survey (USGS) developed an integrated research program aimed at understanding the ecosystem responses following dam removal. The research program included repeated surveys of beach topography, nearshore bathymetry, and surface sediment grain size to quantify changes in delta morphology...
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This portion of the USGS data release presents bathymetry data collected during surveys performed on the Elwha River delta, Washington in July 2015 (USGS Field Activity Number 2015-648-FA). Bathymetry data were collected using two personal watercraft (PWCs), each equipped with single-beam sonar systems and global navigation satellite system (GNSS) receivers. The PWC sonar systems consisted of an Odom Echotrac CV-100 single-beam echosounder and 200 kHz transducer with a 9° beam angle. Raw acoustic backscatter returns were digitized by the echosounder with a vertical resolution of 1.25 cm. Depths from the echosounders were computed using sound velocity profiles measured using a YSI CastAway CTD during the survey....


map background search result map search result map Nearshore bathymetry data from the Elwha River delta, Washington, July 2015 Bathymetry and topography data from the Elwha River delta, Washington, May 2011 Topography data from the Elwha River delta, Washington, May 2011 Nearshore bathymetry data from the Elwha River delta, Washington, September 2010 Characterization of seafloor photographs near the mouth of the Elwha River during the first two years of dam removal (2011-2013) USGS Topo Map Vector Data (Vector) 11622 Deadmans Hill, Washington 20200711 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 14235 Elwha, Washington 20200711 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 76267 Gardiner OE N, Washington 20200711 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 16820 Gardiner, Washington 20200710 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 27303 Makah Bay, Washington 20200711 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 33811 Ozette, Washington 20200710 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 36803 Quillayute Prairie, Washington 20200711 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 40603 Sequim, Washington 20200710 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 40603 Sequim, Washington 20200710 for 7.5 x 7.5 minute Shapefile Suspended sediment concentration data in the Elwha River, Washington, September 2011 to September 2016 USGS US Topo 7.5-minute map for Dungeness, WA 2020 USGS US Topo 7.5-minute map for Dungeness OE E, WA 2020 USGS US Topo 7.5-minute map for Hurricane Hill, WA 2020 USGS US Topo 7.5-minute map for McCartney Peak, WA 2020 USGS US Topo 7.5-minute map for Deadmans Hill, WA 2020 Topography data from the Elwha River delta, Washington, May 2011 Nearshore bathymetry data from the Elwha River delta, Washington, September 2010 Nearshore bathymetry data from the Elwha River delta, Washington, July 2015 Suspended sediment concentration data in the Elwha River, Washington, September 2011 to September 2016 USGS Topo Map Vector Data (Vector) 11622 Deadmans Hill, Washington 20200711 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 14235 Elwha, Washington 20200711 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 76267 Gardiner OE N, Washington 20200711 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 16820 Gardiner, Washington 20200710 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 27303 Makah Bay, Washington 20200711 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 33811 Ozette, Washington 20200710 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 36803 Quillayute Prairie, Washington 20200711 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 40603 Sequim, Washington 20200710 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 40603 Sequim, Washington 20200710 for 7.5 x 7.5 minute Shapefile USGS US Topo 7.5-minute map for Dungeness, WA 2020 USGS US Topo 7.5-minute map for Dungeness OE E, WA 2020 USGS US Topo 7.5-minute map for Hurricane Hill, WA 2020 USGS US Topo 7.5-minute map for McCartney Peak, WA 2020 USGS US Topo 7.5-minute map for Deadmans Hill, WA 2020