Bathymetry and acoustic-backscatter data collected in 2016 offshore the Elwha River mouth, Washington, during USGS Field Activity 2016-605-FA
https://doi.org/10.5066/P9YVVAMT
Acoustic-backscatter data collected in 2016 offshore the Elwha River mouth, Washington, during USGS Field Activity 2016-605-FA
Summary
These metadata describe acoustic-backscatter data collected during a 2016 SWATHPlus-M survey offshore the Elwha River mouth, Strait of Juan de Fuca, Washington. Data were collected and processed by the U.S. Geological Survey (USGS), Pacific Coastal and Marine Science Center (PCMSC) with fieldwork activity number 2016-605-FA. The acoustic-backscatter data are provided as a GeoTIFF image in UTM, zone 10, NAD83 coordinates.
Purpose
Sonar-based surveys of the seafloor around the Elwha River mouth, Strait of Juan de Fuca, Washington were conducted to map changes that have occurred following sediment input from dam removals from the Department of the Interior's Elwha River Restoration Project. This project resulted in the removal of two large dams on the Elwha River during 2011-2014, which released millions of tonnes of sediment to the river and coast. Similar sonar-based surveys were conducted before the dam removals in 2008 and 2010 by the USGS, and these pre-removal surveys may be used for comparisons with the data provided herein. Collaborative partners in this work include the Lower Elwha Klallam Tribe.
Data Files
Metadata Files
Suggested Citation
Dartnell, P., and Warrick, J.A., 2020, Bathymetry and acoustic-backscatter data collected in 2016 offshore the Elwha River mouth, Washington, during USGS Field Activity 2016-605-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P9YVVAMT.
