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USGS Coastal and Marine Geology Program

Field Activity Details for field activity 2015-648-FA

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AKA: none

Other ID: none

Status: Completed

Organization(s): USGS, Pacific Coastal and Marine Science Center

Funding Program(s): Coastal Habitats in Puget Sound (ZP00AZZ)

Principal Investigator(s): Guy Gelfenbaum, Jonathan Warrick

Affiliate Investigator(s):

Information Specialist(s): Andrew Stevens

Data Type(s): Imagery: Photo, Location-Elevation: Navigation, Location-Elevation: Transects, Sampling: Geology, Sonar: Single Beam, Sonar: Sound Velocity

Scientific Purpose/Goals: Collect nearshore bathymetry and beach topography

Vehicle(s): MarFac; Chevy Suburban - gray; 7 pass; G62-2874L

Start Port/Location: Port Angeles, WA

End Port/Location: Port Angeles, WA

Start Date: 2015-07-29

End Date: 2015-07-31

Equipment Used: Echosounder-1, Trimble R7 GPS receiver 9, Echosounder-2, grab sampler, camera, Trimble R7 GPS receiver, Trimble R7 GPS (AS), soundvelocityprofiler

Information to be Derived: Nearshore Bathymetry, Beach Topography

Summary of Activity and Data Gathered: aerial_photos, base, bathy, matlab, planning, Samples, sediment_sampling, svp, temp topo added to FAD 8/20/2015

Staff: Jackson Currie, Guy Gelfenbaum, Andrew Stevens, Jonathan Warrick

Affiliate Staff:

Notes: Entries for this field activity are based on entries from Field Activity 2014-649-FA

Entries for this field activity are based on entries from Field Activity 2015-605-FA


Puget Sound

North: 48.17624572 South: 48.10493829 West: -123.633 East: -123.38360665


photo of Waverunner 1 (SC)
Waverunner 1 (SC)
photo of Waverunner 2 (SC)
Waverunner 2 (SC)



Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Echosounder-1 --- Single Beam
bathymetry data (published in ScienceBase; U.S. Geological Survey data release, doi: 10.5066/F7S75DG9)
Trimble R7 GPS receiver 9 --- Benchmarks
topography data (published in ScienceBase; U.S. Geological Survey data release, doi: 10.5066/F7S75DG9)
Digital elevation models (DEMs) of the Elwha River delta, Washington, July 2015 (This part of the data release presents a digital elevation model (DEM) derived from bathymetry and topography data of the Elwha River delta collected in July 2015. 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 developed an integrated research program aimed at understanding the ecosystem responses following dam removal that included regular monitoring of coastal and nearshore bathymetry and topography. As part of this monitoring program, the USGS conducted a bathymetric and topographic survey in the Strait of Juan de Fuca on the Elwha River delta, Washington (USGS Field Activity Number 2015-648-FA). Bathymetry data were collected using two personal watercraft (PWCs), each equipped with single-beam echosounders and survey-grade global navigation satellite systems (GNSS). Topography data were collected on foot with GNSS receivers mounted on backpacks. DEM surfaces were produced from all available elevation data using linear interpolation.)
Echosounder-2 --- Single Beam
grab sampler --- Surveys (geochemical)
grain-size data (published in ScienceBase; U.S. Geological Survey data release, doi: 10.5066/F7S75DG9)
camera --- Photo
Trimble R7 GPS receiver --- Benchmarks
Trimble R7 GPS (AS) --- Benchmarks
soundvelocityprofiler --- Sound Velocity

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