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This part of the data release presents bathymetry data from the Elwha River delta collected in July 2016 using a kayak. The kayak was equipped with a single-beam echosounder and a survey-grade global navigation satellite system (GNSS) receiver.
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This portion of the USGS data release presents digital elevation models (DEMs) derived from bathymetric and topographic surveys conducted on the Elwha River delta in February 2016 (USGS Field Activity Number 2016-608-FA). Nearshore bathymetry data were collected using two personal watercraft (PWCs) and a kayak equipped with single-beam echosounders and survey-grade global navigation satellite systems (GNSS) receivers. Topographic data were collected on foot with survey-grade GNSS receivers mounted on backpacks. Positions of the survey platforms were referenced to a GNSS base station placed on a benchmark with known horizontal and vertical coordinates relative to the North American Datum of 1983 (CORS96 realization)...
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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 2017 (USGS Field Activity Number 2017-638-FA). Bathymetry data were collected using two personal watercraft (PWCs) and a kayak, all 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...
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This part of the data release presents bathymetry data from the Elwha River delta collected in February 2016 using a kayak. The kayak was equipped with a single-beam echosounder and a survey-grade global navigation satellite system (GNSS) receiver.
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First Release: Aug 2017 Revised: May 2018 (ver. 1.1) Time-series data of velocity, pressure, turbidity, conductivity, and temperature were collected near the mouth of the Elwha River, Washington, USA, from December 2010 through October 2014, for the Department of Interior’s Elwha River Restoration project. As part of this project, the U.S. Geological Survey studied the effects of renewed sediment supplies on the coastal ecosystems before, during, and following the removal of two dams, Elwha and Glines Canyon, from the Elwha River. Removal of the dams reintroduced sediment stored in the reservoirs to the river, and the river moved much of this sediment to the coast. Several benthic tripods were instrumented with...
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This part of the data release presents bathymetry data from the Elwha River delta collected in July 2016 using two personal watercraft (PWCs). The PWCs were equipped with single beam echosounders and survey-grade global navigation satellite system (GNSS) receivers.
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This part of the data release presents bathymetry data from the Elwha River delta collected in February 2016 using two personal watercraft (PWCs). The PWCs were equipped with single-beam echosounders and survey-grade global navigation satellite system (GNSS) receivers.
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This part of the data release presents bathymetry data from the Elwha River delta collected in July 2017 using two personal watercraft (PWCs). The PWCs were equipped with single beam echosounders and survey-grade global navigation satellite system (GNSS) receivers.


    map background search result map search result map Digital elevation models (DEMs) of the Elwha River delta, Washington, February 2016 Nearshore bathymetry data from the Elwha River delta, Washington, July 2017 Nearshore bathymetry data from the Elwha River delta, Washington, January 2015, collected from kayak Nearshore bathymetry data from the Elwha River delta, Washington, January 2015, collected from personal watercraft Nearshore bathymetry data from the Elwha River delta, Washington, February 2016, collected from kayak Nearshore bathymetry data from the Elwha River delta, Washington, February 2016, collected from personal watercraft Nearshore bathymetry data from the Elwha River delta, Washington, July 2016, collected from kayak Nearshore bathymetry data from the Elwha River delta, Washington, July 2016, collected from personal watercraft Nearshore bathymetry data from the Elwha River delta, Washington, July 2017, collected from personal watercraft Nearshore bathymetry data from the Elwha River delta, Washington, January 2015, collected from kayak Nearshore bathymetry data from the Elwha River delta, Washington, July 2016, collected from kayak Nearshore bathymetry data from the Elwha River delta, Washington, February 2016, collected from kayak Nearshore bathymetry data from the Elwha River delta, Washington, January 2015, collected from personal watercraft Digital elevation models (DEMs) of the Elwha River delta, Washington, February 2016 Nearshore bathymetry data from the Elwha River delta, Washington, February 2016, collected from personal watercraft Nearshore bathymetry data from the Elwha River delta, Washington, July 2016, collected from personal watercraft Nearshore bathymetry data from the Elwha River delta, Washington, July 2017 Nearshore bathymetry data from the Elwha River delta, Washington, July 2017, collected from personal watercraft