1. Coastal and Marine Hazards and Resources
  2. Geoscience Data System
  3. Dataset 43950

Dataset description: Digital elevation models (DEMs) of the Elwha River delta, Washington, July and August 2023

Digital elevation models (DEMs) of the Elwha River delta were constructed from bathymetric and topographic surveys collected in July and August 2023. Nearshore bathymetry data were acquired 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. A total of 1,301,196 individual elevation points were collected between July 30 and August 2, 2023, and used to create DEM surfaces with linear interpolation. A DEM was generated for the entire Elwha River delta with a resolution of 5 m and another DEM that included the river mouth region had a resolution of 1 m.
Version1
Keywordstopography, digital elevation models, GPS measurement, bathymetry, bathymetry measurement
Data typesProfiles, Single Beam, Navigation
FormatRaster data format;
Amount21 MB

Contacts

Contact
Andrew Stevens
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Location of materials and files

Public fileshttps://doi.org/10.5066/P1BGEMN5
Metadatahttps://cmgds.marine.usgs.gov/metadata/pcmsc/DataReleases/CMGDS_DR_tool/DR_P1BGEMN5/ew23_dem_metadata.xml
Outline - Questions and answers - Text - XML

Activities and equipment

ActivityEquipment
2023-645-FAYSI Sound velocity CTD
YSI Castaway CTD
2023-645-FAWaverunners
2023-645-FATrimble R7 GPS receiver 9
Dan Hoover submitted
2023-645-FATrimble R7 GPS receiver
Dan Hoover submitted
2023-645-FATrimble R7 GPS (AS)
Andrew Stevens submitted; no serial numbers yet