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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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Data are time series of substrate grain size, remotely sensed water column turbidity, and measures of abundance (e.g., density, percent cover) of the nearshore subtidal (3-17 m depth) benthic community (vegetation, invertebrates, and fish) collected before (2008-2011) and during dam removal (2012-2014).
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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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This release contains data collected to study the impacts of vegetation removal on the condition of Lake Ozette Sockeye spawning habitat. From October 2018 to May 2019, continuous sediment temperature and subsurface dissolved oxygen were collected at sites near Olsen's Beach on the eastern shore of Lake Ozette, WA. Data were collected from 3 sites; a spawning control (SC) where sockeye currently return to spawn; a vegetation control (VC) where nearshore vegetation inhibits the amount of sockeye spawning; and a vegetation treatment (TR) area where nearshore vegetation was manually removed to assess if habitat quality can be improved. In addition to the continuous data, particle size data from the nearshore were determined...
map background search result map search result map 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) 4661 Bodelteh Islands, Washington 20200710 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 4661 Bodelteh Islands, Washington 20200710 for 7.5 x 7.5 minute FileGDB 10.1 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) 21582 Hurricane Hill, Washington 20200711 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 72407 Indian Pass, Washington 20200710 for 7.5 x 7.5 minute FileGDB 10.1 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 Topo Map Vector Data (Vector) 41880 Snider Peak, Washington 20200710 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 46141 Twin Rivers, Washington 20200711 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 30888 Mount Walker, Washington 20200711 for 7.5 x 7.5 minute FileGDB 10.1 Data collected in 2008-2014 to assess nearshore subtidal community responses to increased sediment load during removal of the Elwha River dams, Washington State, USA Suspended sediment concentration data in the Elwha River, Washington, September 2011 to September 2016 Dissolved Oxygen, temperature, particle-size distribution, and groundwater flux in the nearshore of Lake Ozette, WA, October 2018 to May 2019 Suspended sediment concentration data in the Elwha River, Washington, September 2011 to September 2016 Dissolved Oxygen, temperature, particle-size distribution, and groundwater flux in the nearshore of Lake Ozette, WA, October 2018 to May 2019 USGS Topo Map Vector Data (Vector) 4661 Bodelteh Islands, Washington 20200710 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 4661 Bodelteh Islands, Washington 20200710 for 7.5 x 7.5 minute FileGDB 10.1 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) 21582 Hurricane Hill, Washington 20200711 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 72407 Indian Pass, Washington 20200710 for 7.5 x 7.5 minute FileGDB 10.1 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 Topo Map Vector Data (Vector) 41880 Snider Peak, Washington 20200710 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 46141 Twin Rivers, Washington 20200711 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 30888 Mount Walker, Washington 20200711 for 7.5 x 7.5 minute FileGDB 10.1 Data collected in 2008-2014 to assess nearshore subtidal community responses to increased sediment load during removal of the Elwha River dams, Washington State, USA