Columbia River mouth bathymetry from USGS data release
Andrew Stevens
Oceanographer with the USGS Pacific Coastal and Marine Science Center
Explore my published data sets on USGS ScienceBase, or choose the Data and Tools tab below.
Education and Certifications
College of Oceanic and Atmospheric Sciences, Oregon State University, Corvallis, OR
M.S., Oceanography, November 2004Humboldt State University, Arcata, CA
B.S., Oceanography, May 2002 (with honors)
Science and Products
Morphodynamic evolution following sediment release from the world’s largest dam removal
Sediment pulses can cause widespread, complex changes to rivers and coastal regions. Quantifying landscape response to sediment-supply changes is a long-standing problem in geomorphology, but the unanticipated nature of most sediment pulses rarely allows for detailed measurement of associated landscape processes and evolution. The intentional removal of two large dams on the Elwha River (Washingto
Increased sediment load during a large-scale dam removal changes nearshore subtidal communities
Coastal habitat and biological community response to dam removal on the Elwha River
Investigation of input reduction techniques for morphodynamic modeling of complex inlets with baroclinic forcing
Bathymetric survey and digital elevation model of Little Holland Tract, Sacramento-San Joaquin Delta, California
Coastal change from a massive sediment input: Dam removal, Elwha River, Washington, USA
Large-scale dam removal on the Elwha River, Washington, USA: coastal geomorphic change
Southwest Washington littoral drift restoration—Beach and nearshore morphological monitoring
The influence of wave energy and sediment transport on seagrass distribution
Coastal habitats of the Elwha River, Washington- Biological and physical patterns and processes prior to dam removal
Tsunami inundation and sediment transport in a sediment-limited embayment on American Samoa
Effects of fringing reefs on tsunami inundation: American Samoa
Non-USGS Publications**
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Modeling surface gravity waves on a schematized ancient lake on Mars
Bathymetry, topography, and sediment grain-size data from the Elwha River delta, Washington, July 2018
Time-series measurements of pressure, conductivity, temperature, and water level collected in Puget Sound and Bellingham Bay, Washington, USA, 2018 to 2021
Beach topography and nearshore bathymetry of the Columbia River littoral cell, Washington and Oregon (ver. 4.0, January 2024)
Eelgrass distributions and bathymetry of Bellingham Bay, Washington, 2019
Hydrodynamic and sediment transport model of San Pablo Bay, California, Nov-Dec 2014
Hydrodynamic model of the lower Columbia River, Washington and Oregon, 2017-2020
Aerial imagery and structure-from-motion derived data products from UAS survey of the Liberty Island Conservation Bank Wildlands restoration site, Sacramento-San Joaquin Delta, California, October 2018
Eelgrass distributions and bathymetry of the Nisqually River delta, Washington
Sediment transport and aquatic vegetation data from three locations in the Sacramento-San Joaquin Delta, California, 2017 to 2018
Bathymetry, topography, and acoustic backscatter data, and a digital elevation model (DEM) of the Cache Slough Complex and Sacramento River Deep Water Ship Channel, Sacramento-San Joaquin Delta, California
Bathymetry, topography, and sediment grain-size data from the Elwha River delta, Washington, July 2017
Columbia River mouth bathymetry from USGS data release
An atmospheric river, or narrow band of moisture moving from the tropics to the higher latitudes, hit California in early January and brought the first heavy rains of 2017. While these storms help a drought-stricken state, the onslaught of rain triggers floods and mudslides, and fills rising rivers with sediment and debris.
An atmospheric river, or narrow band of moisture moving from the tropics to the higher latitudes, hit California in early January and brought the first heavy rains of 2017. While these storms help a drought-stricken state, the onslaught of rain triggers floods and mudslides, and fills rising rivers with sediment and debris.
USGS scientists setting up a lidar scanner on the pier to map the beach near Capitola, California.
USGS scientists setting up a lidar scanner on the pier to map the beach near Capitola, California.
USGS scientist Daniel Hoover mapping the beach at Santa Cruz with a GPS-equipped backpack unit.
USGS scientist Daniel Hoover mapping the beach at Santa Cruz with a GPS-equipped backpack unit.
USGS scientists readying a sonar-equipped boat to map the ocean bottom near Santa Cruz, Calif.
USGS scientists readying a sonar-equipped boat to map the ocean bottom near Santa Cruz, Calif.
A sonar-equipped personal watercraft mapping the bathymetry underwater near Santa Cruz, Calif.
A sonar-equipped personal watercraft mapping the bathymetry underwater near Santa Cruz, Calif.
Christie gears up to survey beach elevation in Santa Cruz, CA with a precise and accurate GPS unit mounted to her backpack. The GPS unit on her backpack communicates with a nearby "base station" to minimize errors in location.
Christie gears up to survey beach elevation in Santa Cruz, CA with a precise and accurate GPS unit mounted to her backpack. The GPS unit on her backpack communicates with a nearby "base station" to minimize errors in location.
Physical scientist Jackson Currie steers a personal water craft (PWC) equipped with GPS and echo sounder through the waves of the nearshore area of Zmudowski State Beach in Moss Landing, California.
Physical scientist Jackson Currie steers a personal water craft (PWC) equipped with GPS and echo sounder through the waves of the nearshore area of Zmudowski State Beach in Moss Landing, California.
The coastal bluff along East Cliff Drive in Santa Cruz, California are especially vulnerable to rising sea level during big storms. Sometimes even the rip-rap, put in place to protect roadways and homes, cannot protect the bluffs from erosion.
The coastal bluff along East Cliff Drive in Santa Cruz, California are especially vulnerable to rising sea level during big storms. Sometimes even the rip-rap, put in place to protect roadways and homes, cannot protect the bluffs from erosion.
A personal watercraft ready to survey the surf zone, with custom waterproof displays linked to an echo sounder and a precision GPS receiver. These surveys require special training and permits.
A personal watercraft ready to survey the surf zone, with custom waterproof displays linked to an echo sounder and a precision GPS receiver. These surveys require special training and permits.
Bathymetry data of Columbia River mouth, derived from an interferometric swath bathymetry systems survey in 2013. A) Swath map of data; B-E) sample detail pull-outs
Bathymetry data of Columbia River mouth, derived from an interferometric swath bathymetry systems survey in 2013. A) Swath map of data; B-E) sample detail pull-outs
Coastal research can be beautiful, too. Personal watercraft survey offshore of Santa Cruz, California.
Coastal research can be beautiful, too. Personal watercraft survey offshore of Santa Cruz, California.
USGS scientist surveying a beach using a backpack-mounted precision GPS receiver.
USGS scientist surveying a beach using a backpack-mounted precision GPS receiver.
Antonio Espejo Hermosa uses a handheld computer and GPS equipment to record beach topography data near Sunset State Beach in Santa Cruz.
Antonio Espejo Hermosa uses a handheld computer and GPS equipment to record beach topography data near Sunset State Beach in Santa Cruz.
USGS scientist Alex Snyder gathers topographic data by walking beach transects northwest of Moss Landing to help researchers understand how Monterey Bay will respond to changing environmental conditions.
USGS scientist Alex Snyder gathers topographic data by walking beach transects northwest of Moss Landing to help researchers understand how Monterey Bay will respond to changing environmental conditions.
Photograph shows a USGS scientist navigating an all-terrain vehicle equipped with GPS, collecting topographic data on Rio Del Mar State Beach in Aptos, California. Gathering this type of information helps USGS scientists to document the changes in beach and nearshore morphology (or form and structure), caused by seasonal variations and storms.
Photograph shows a USGS scientist navigating an all-terrain vehicle equipped with GPS, collecting topographic data on Rio Del Mar State Beach in Aptos, California. Gathering this type of information helps USGS scientists to document the changes in beach and nearshore morphology (or form and structure), caused by seasonal variations and storms.
A USGS scientist guides a personal watercraft toward Seabright Beach near the Santa Cruz Harbor entrance during bathymetric surveys.
A USGS scientist guides a personal watercraft toward Seabright Beach near the Santa Cruz Harbor entrance during bathymetric surveys.
USGS scientist Jackson Currie navigates a personal watercraft towards Santa Cruz's Main Beach, to record bathymetric data along a transect.
USGS scientist Jackson Currie navigates a personal watercraft towards Santa Cruz's Main Beach, to record bathymetric data along a transect.
Panoramic view from the cliffs above the San Lorenzo River and east of the Santa Cruz Beach Boardwalk and Main Beach. Santa Cruz municipal pier and other buildings are visible in the background.
Panoramic view from the cliffs above the San Lorenzo River and east of the Santa Cruz Beach Boardwalk and Main Beach. Santa Cruz municipal pier and other buildings are visible in the background.
A USGS technician surveys the seafloor bathymetry using a personal watercraft outfitted with global positioning systems (GPS) and echo sounders.
Location: Santa Cruz, California (near Steamers Lane).
A USGS technician surveys the seafloor bathymetry using a personal watercraft outfitted with global positioning systems (GPS) and echo sounders.
Location: Santa Cruz, California (near Steamers Lane).
A USGS technician surveys the seafloor bathymetry using a personal watercraft outfitted with global positioning systems (GPS) and echo sounders.
Location:Santa Cruz, California (near Santa Cruz Boardwalk).
A USGS technician surveys the seafloor bathymetry using a personal watercraft outfitted with global positioning systems (GPS) and echo sounders.
Location:Santa Cruz, California (near Santa Cruz Boardwalk).
Science and Products
Morphodynamic evolution following sediment release from the world’s largest dam removal
Sediment pulses can cause widespread, complex changes to rivers and coastal regions. Quantifying landscape response to sediment-supply changes is a long-standing problem in geomorphology, but the unanticipated nature of most sediment pulses rarely allows for detailed measurement of associated landscape processes and evolution. The intentional removal of two large dams on the Elwha River (Washingto
Increased sediment load during a large-scale dam removal changes nearshore subtidal communities
Coastal habitat and biological community response to dam removal on the Elwha River
Investigation of input reduction techniques for morphodynamic modeling of complex inlets with baroclinic forcing
Bathymetric survey and digital elevation model of Little Holland Tract, Sacramento-San Joaquin Delta, California
Coastal change from a massive sediment input: Dam removal, Elwha River, Washington, USA
Large-scale dam removal on the Elwha River, Washington, USA: coastal geomorphic change
Southwest Washington littoral drift restoration—Beach and nearshore morphological monitoring
The influence of wave energy and sediment transport on seagrass distribution
Coastal habitats of the Elwha River, Washington- Biological and physical patterns and processes prior to dam removal
Tsunami inundation and sediment transport in a sediment-limited embayment on American Samoa
Effects of fringing reefs on tsunami inundation: American Samoa
Non-USGS Publications**
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Modeling surface gravity waves on a schematized ancient lake on Mars
Bathymetry, topography, and sediment grain-size data from the Elwha River delta, Washington, July 2018
Time-series measurements of pressure, conductivity, temperature, and water level collected in Puget Sound and Bellingham Bay, Washington, USA, 2018 to 2021
Beach topography and nearshore bathymetry of the Columbia River littoral cell, Washington and Oregon (ver. 4.0, January 2024)
Eelgrass distributions and bathymetry of Bellingham Bay, Washington, 2019
Hydrodynamic and sediment transport model of San Pablo Bay, California, Nov-Dec 2014
Hydrodynamic model of the lower Columbia River, Washington and Oregon, 2017-2020
Aerial imagery and structure-from-motion derived data products from UAS survey of the Liberty Island Conservation Bank Wildlands restoration site, Sacramento-San Joaquin Delta, California, October 2018
Eelgrass distributions and bathymetry of the Nisqually River delta, Washington
Sediment transport and aquatic vegetation data from three locations in the Sacramento-San Joaquin Delta, California, 2017 to 2018
Bathymetry, topography, and acoustic backscatter data, and a digital elevation model (DEM) of the Cache Slough Complex and Sacramento River Deep Water Ship Channel, Sacramento-San Joaquin Delta, California
Bathymetry, topography, and sediment grain-size data from the Elwha River delta, Washington, July 2017
Columbia River mouth bathymetry from USGS data release
Columbia River mouth bathymetry from USGS data release
An atmospheric river, or narrow band of moisture moving from the tropics to the higher latitudes, hit California in early January and brought the first heavy rains of 2017. While these storms help a drought-stricken state, the onslaught of rain triggers floods and mudslides, and fills rising rivers with sediment and debris.
An atmospheric river, or narrow band of moisture moving from the tropics to the higher latitudes, hit California in early January and brought the first heavy rains of 2017. While these storms help a drought-stricken state, the onslaught of rain triggers floods and mudslides, and fills rising rivers with sediment and debris.
USGS scientists setting up a lidar scanner on the pier to map the beach near Capitola, California.
USGS scientists setting up a lidar scanner on the pier to map the beach near Capitola, California.
USGS scientist Daniel Hoover mapping the beach at Santa Cruz with a GPS-equipped backpack unit.
USGS scientist Daniel Hoover mapping the beach at Santa Cruz with a GPS-equipped backpack unit.
USGS scientists readying a sonar-equipped boat to map the ocean bottom near Santa Cruz, Calif.
USGS scientists readying a sonar-equipped boat to map the ocean bottom near Santa Cruz, Calif.
A sonar-equipped personal watercraft mapping the bathymetry underwater near Santa Cruz, Calif.
A sonar-equipped personal watercraft mapping the bathymetry underwater near Santa Cruz, Calif.
Christie gears up to survey beach elevation in Santa Cruz, CA with a precise and accurate GPS unit mounted to her backpack. The GPS unit on her backpack communicates with a nearby "base station" to minimize errors in location.
Christie gears up to survey beach elevation in Santa Cruz, CA with a precise and accurate GPS unit mounted to her backpack. The GPS unit on her backpack communicates with a nearby "base station" to minimize errors in location.
Physical scientist Jackson Currie steers a personal water craft (PWC) equipped with GPS and echo sounder through the waves of the nearshore area of Zmudowski State Beach in Moss Landing, California.
Physical scientist Jackson Currie steers a personal water craft (PWC) equipped with GPS and echo sounder through the waves of the nearshore area of Zmudowski State Beach in Moss Landing, California.
The coastal bluff along East Cliff Drive in Santa Cruz, California are especially vulnerable to rising sea level during big storms. Sometimes even the rip-rap, put in place to protect roadways and homes, cannot protect the bluffs from erosion.
The coastal bluff along East Cliff Drive in Santa Cruz, California are especially vulnerable to rising sea level during big storms. Sometimes even the rip-rap, put in place to protect roadways and homes, cannot protect the bluffs from erosion.
A personal watercraft ready to survey the surf zone, with custom waterproof displays linked to an echo sounder and a precision GPS receiver. These surveys require special training and permits.
A personal watercraft ready to survey the surf zone, with custom waterproof displays linked to an echo sounder and a precision GPS receiver. These surveys require special training and permits.
Bathymetry data of Columbia River mouth, derived from an interferometric swath bathymetry systems survey in 2013. A) Swath map of data; B-E) sample detail pull-outs
Bathymetry data of Columbia River mouth, derived from an interferometric swath bathymetry systems survey in 2013. A) Swath map of data; B-E) sample detail pull-outs
Coastal research can be beautiful, too. Personal watercraft survey offshore of Santa Cruz, California.
Coastal research can be beautiful, too. Personal watercraft survey offshore of Santa Cruz, California.
USGS scientist surveying a beach using a backpack-mounted precision GPS receiver.
USGS scientist surveying a beach using a backpack-mounted precision GPS receiver.
Antonio Espejo Hermosa uses a handheld computer and GPS equipment to record beach topography data near Sunset State Beach in Santa Cruz.
Antonio Espejo Hermosa uses a handheld computer and GPS equipment to record beach topography data near Sunset State Beach in Santa Cruz.
USGS scientist Alex Snyder gathers topographic data by walking beach transects northwest of Moss Landing to help researchers understand how Monterey Bay will respond to changing environmental conditions.
USGS scientist Alex Snyder gathers topographic data by walking beach transects northwest of Moss Landing to help researchers understand how Monterey Bay will respond to changing environmental conditions.
Photograph shows a USGS scientist navigating an all-terrain vehicle equipped with GPS, collecting topographic data on Rio Del Mar State Beach in Aptos, California. Gathering this type of information helps USGS scientists to document the changes in beach and nearshore morphology (or form and structure), caused by seasonal variations and storms.
Photograph shows a USGS scientist navigating an all-terrain vehicle equipped with GPS, collecting topographic data on Rio Del Mar State Beach in Aptos, California. Gathering this type of information helps USGS scientists to document the changes in beach and nearshore morphology (or form and structure), caused by seasonal variations and storms.
A USGS scientist guides a personal watercraft toward Seabright Beach near the Santa Cruz Harbor entrance during bathymetric surveys.
A USGS scientist guides a personal watercraft toward Seabright Beach near the Santa Cruz Harbor entrance during bathymetric surveys.
USGS scientist Jackson Currie navigates a personal watercraft towards Santa Cruz's Main Beach, to record bathymetric data along a transect.
USGS scientist Jackson Currie navigates a personal watercraft towards Santa Cruz's Main Beach, to record bathymetric data along a transect.
Panoramic view from the cliffs above the San Lorenzo River and east of the Santa Cruz Beach Boardwalk and Main Beach. Santa Cruz municipal pier and other buildings are visible in the background.
Panoramic view from the cliffs above the San Lorenzo River and east of the Santa Cruz Beach Boardwalk and Main Beach. Santa Cruz municipal pier and other buildings are visible in the background.
A USGS technician surveys the seafloor bathymetry using a personal watercraft outfitted with global positioning systems (GPS) and echo sounders.
Location: Santa Cruz, California (near Steamers Lane).
A USGS technician surveys the seafloor bathymetry using a personal watercraft outfitted with global positioning systems (GPS) and echo sounders.
Location: Santa Cruz, California (near Steamers Lane).
A USGS technician surveys the seafloor bathymetry using a personal watercraft outfitted with global positioning systems (GPS) and echo sounders.
Location:Santa Cruz, California (near Santa Cruz Boardwalk).
A USGS technician surveys the seafloor bathymetry using a personal watercraft outfitted with global positioning systems (GPS) and echo sounders.
Location:Santa Cruz, California (near Santa Cruz Boardwalk).