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Ground control point locations for UAS surveys of the beaches at Fort Stevens State Park, OR, and Cape Disappointment State Park, WA, July 2021 This portion of the data release presents the locations of the temporary ground control points (GCPs) used for the structure-from-motion (SfM) processing of the imagery collected during the July 2021 unoccupied aerial system (UAS) surveys of the ocean beach at Fort Stevens State Park, OR, and Benson Beach at Cape Disappointment State Park, WA. Eighteen temporary ground control points (GCPs) were distributed throughout the survey area to establish survey control. The GCPs consisted of a combination of small square tarps with black-and-white cross patterns and "X" marks placed on the ground using temporary chalk. The GCP positions were measured using dual-frequency post-processed kinematic (PPK) GPS with corrections... Categories: Data; Tags: Bathymetry and Elevation, Benson Beach, CHMRP, Cape Disappointment, Clatsop County, All tags... Clatsop Spit, Coastal and Marine Hazards and Resources Program, Columbia River, Fort Stevens, North Head, PCMSC, Pacific Coastal and Marine Science Center, Pacific County, Pacific Ocean, State of Oregon, State of Washington, Structure-from-motion, U.S. Geological Survey, UAS, USGS, Unmanned aerial system, aerial and satellite photography, aerial photography, altimetry, elevation, geomorphology, geoscientificInformation, geospatial datasets, image mosaics, orthophotography, photography, remote sensing, remote sensing, topographic maps, topography, Fewer tags Bathymetry, topography, and sediment grain-size data from the Elwha River delta, Washington, August 2022 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 (USGS) developed an integrated research program aimed at understanding the ecosystem responses following dam removal. The research program included repeated surveys of beach topography, nearshore bathymetry, and surface sediment grain size to quantify changes in delta morphology... Categories: Data; Tags: Geomorphology, Sedimentology Topography data from the Elwha River delta, Washington, August 2022 This part of the data release presents topography data from the Elwha River delta collected in August 2022. Topography data were collected on foot with global navigation satellite system (GNSS) receivers mounted on backpacks. Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Bathymetry and Elevation, CMHRP, Clallam County, Coastal and Marine Hazards and Resources Program, Elwha River, All tags... GPS measurement, Global Positioning System (GPS) observations, Olympic Peninsula, PCMSC, Pacific Coastal and Marine Science Center, Strait of Juan de Fuca, U.S. Geological Survey, USGS, elevation, topography, Fewer tags Hydrodynamic and sediment transport model of the mouth of the Columbia River, Washington and Oregon, 2020-2021 A three-dimensional hydrodynamic and sediment transport model application of the mouth of the Columbia River (MCR) was constructed using the Delft3D4 (D3D) modeling suite (Deltares, 2021) to simulate water levels, flow, waves, and sediment transport for time period of September 22, 2020 to March 10, 2021. The model was used to predict the dispersal of sediment from a submerged, nearshore berm composed of sediment that was dredged from the entrance to the MCR navigation channel and placed on the northern flank of the ebb-tidal delta. This data release describes the development and validation of the model application and provides input files suitable to run the models on D3D software version 4.04.01. Categories: Data; Tags: CMHRP, Clatsop County, Coastal and Marine Hazards and Resources Program, Columbia River, PCMSC, All tags... Pacific Coastal and Marine Science Center, Pacific County, Pacific Ocean, U.S. Geological Survey, USGS, coastal processes, marine water quality, numerical modeling, oceans, water circulation, water column features, Fewer tags Aerial imagery from UAS surveys of beaches at Fort Stevens State Park, OR, and Cape Disappointment State Park, WA, August 2017 This portion of the data release presents the raw aerial imagery collected during the uncrewed aerial system (UAS) survey conducted on the ocean beaches adjacent to the Columbia River Mouth at the Oregon-Washington border in August 2017. The imagery was acquired using a Department of Interior-owned 3DR Solo quadcopter fitted with a Ricoh GR II digital camera featuring a global shutter. The camera was mounted using a fixed mount on the bottom of the UAS and oriented in an approximately nadir orientation. The Fort Stevens State Park survey was conducted under Oregon Parks and Recreation Department Scientific Research Permit #024-17. Five flights were conducted at Fort Stevens State Park on 7 August 2017, between 16:32... Categories: Data; Tags: Bathymetry and Elevation, Benson Beach, CHMRP, Cape Disappointment, Clatsop County, All tags... Clatsop Spit, Coastal and Marine Hazards and Resources Program, Columbia River, Fort Stevens, North Head, PCMSC, Pacific Coastal and Marine Science Center, Pacific County, Pacific Ocean, State of Oregon, State of Washington, Structure-from-motion, U.S. Geological Survey, UAS, USGS, Unmanned aerial system, aerial and satellite photography, aerial photography, altimetry, elevation, geomorphology, geoscientificInformation, geospatial datasets, image mosaics, orthophotography, photography, remote sensing, remote sensing, topographic maps, topography, Fewer tags Salish Sea water level hindcast simulations: 1985-2015 Simulatations of water levels in the Salish Sea for a continuous hindcast of the period October 1, 1985, to September 30, 2015 were conducted to evaluate the utility and skill of a sea-level anomaly predictor and to develop extreme water level estimates accounting for decadal climate variability. The model accounts for sea level position, tides, remote sea-level anomalies, local winds and storm surge and stream flows as they affect water density. Comparison of modeled and measured water levels showed the model predicts extreme water levels at NOAA tide gage stations within 0.15 m. Model inputs and outputs of time-series water levels along the -5 m depth isobath are presented. In addition, extreme water level recurrence... Categories: Data; Tags: CMHRP, Climate Change, Coastal and Marine Hazards and Resources Program, Distributions, Extreme Weather, All tags... Hazards Planning, Ocean Winds, PCMSC, Pacific Coastal and Marine Science Center, Predictions, Puget Sound, Salish Sea, State of Washington, Storms, U.S. Geological Survey, USGS, Wind, coastal processes, geoscientificInformation, numerical modeling, oceans, water level measurements, Fewer tags Ground control point locations for UAS surveys of the beaches at Fort Stevens State Park, OR, and Cape Disappointment State Park, WA, August 2017 This portion of the data release presents the locations of the temporary ground control points (GCPs) used for the structure-from-motion (SfM) processing of the imagery collected during the August 2017 unoccupied aerial system (UAS) surveys of the ocean beach at Fort Stevens State Park, OR, and Benson Beach at Cape Disappointment State Park, WA. Eighteen temporary ground control points (GCPs) were distributed throughout the survey area to establish survey control. The GCPs consisted of a combination of small square tarps with black-and-white cross patterns and "X" marks placed on the ground using temporary chalk. The GCP positions were measured using dual-frequency real-time kinematic (RTK) or post-processed kinematic... Categories: Data; Tags: Bathymetry and Elevation, Benson Beach, CHMRP, Cape Disappointment, Clatsop County, All tags... Clatsop Spit, Coastal and Marine Hazards and Resources Program, Columbia River, Fort Stevens, North Head, PCMSC, Pacific Coastal and Marine Science Center, Pacific County, Pacific Ocean, State of Oregon, State of Washington, Structure-from-motion, U.S. Geological Survey, UAS, USGS, Unmanned aerial system, aerial and satellite photography, aerial photography, altimetry, elevation, geomorphology, geoscientificInformation, geospatial datasets, image mosaics, orthophotography, photography, remote sensing, remote sensing, topographic maps, topography, Fewer tags Aerial imagery and structure-from-motion data products from UAS surveys of the beaches at Fort Stevens State Park, OR, and Cape Disappointment State Park, WA, July 2021 This data release presents aerial imagery and structure-from-motion (SfM) data products from uncrewed aerial system (UAS) surveys conducted on the ocean beaches adjacent to the Columbia River Mouth at the Oregon-Washington border in July 2021. The surveys cover approximately 3 kilometers of Benson Beach at Cape Disappointment State Park in Washington, north of the Columbia River mouth, and 3 kilometers of the beach at Fort Stevens State Park in Oregon, south of the river mouth. Both surveys were timed to coincide with low tide to maximize the extent of the exposed beach. For the Fort Stevens State Park survey a total of ten flights were conducted between 14:00 and 16:45 UTC (7:00 and 9:45 PDT) on 22 July. For... Nearshore bathymetry data from the Elwha River delta, Washington, August 2022 This portion of the USGS data release presents bathymetric data collected during surveys performed on the Elwha River delta, Washington in 2022 (USGS Field Activity Number 2022-638-FA). Bathymetric data were collected using personal watercraft (PWCs) and a kayak equipped with single-beam sonar systems and global navigation satellite system (GNSS) receivers. Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Bathymetry and Elevation, CMHRP, Clallam County, Coastal and Marine Hazards and Resources Program, Elwha River, All tags... GPS measurement, Global Positioning System (GPS) observations, Olympic Peninsula, PCMSC, Pacific Coastal and Marine Science Center, Strait of Juan de Fuca, U.S. Geological Survey, USGS, bathymetry, elevation, marine geophysics, sea-floor characteristics, single-beam echo sounder, Fewer tags Bathymetry and acoustic backscatter data from Floras Lake, Oregon, June 2018 This publication releases single-beam bathymetry and backscatter datasets acquired by the U.S. Geological Survey (USGS) during surveys performed on Floras Lake, Oregon, in June 2018. Bathymetry and backscatter data were collected using two personal watercraft (PWCs) equipped with single-beam sonar systems, sidescan sonar systems, and global navigation satellite system (GNSS) receivers. Bathymetry data are provided as point data in a comma-separated text file and are projected in cartesian coordinates using the Universal Transverse Mercator (UTM), Zone 10 North, meters coordinate system, with elevations relative to the NAVD88 vertical datum. Acoustic-backscatter data are provided as a GeoTIFF file also projected... Categories: Data; Tags: Bathymetry and Elevation, CMHRP, Cape Blanco, Coastal and Marine Hazards and Resources Program, Curry County, All tags... Echo Sounders, Floras Lake, GPS (Global Positioning System), GPS measurement, Geomorphology, Geophysics, Global Positioning System (GPS) observations, Oregon, PCMSC, Pacific Coastal and Marine Science Center, Sedimentology, U.S. Geological Survey, USGS, Water Depth, bathymetry, bathymetry measurement, elevation, marine geophysics, sea-floor characteristics, single-beam echo sounder, Fewer tags Eelgrass distributions and bathymetry of Bellingham Bay, Washington, 2019 This data release presents eelgrass distributions and bathymetry data derived from acoustic surveys of Bellingham Bay, Washington. Survey operations were conducted between February 16 and February 21, 2019 (USGS Field Activity Number 2019-606-FA) by a team of scientists from the U.S. Geological Survey Pacific Coastal and Marine Science Center and Washington State Department of Ecology. Eelgrass and bathymetry data were collected from the R/V George Davidson equipped with a single-beam sonar system and global navigation satellite system (GNSS) receiver. The sonar system consisted of a Biosonics DT-X single-beam echosounder and 420 kHz transducer with a 6-degree beam angle. Depths from the echosounder were computed... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Bathymetry and Elevation, CMHRP, Coastal and Marine Hazards and Resources Program, Echo Sounders, Ecology, All tags... GPS (Global Positioning System), GPS measurement, Global Positioning System (GPS) observations, Marine Geology, Nooksack River, PCMSC, Pacific Coastal and Marine Science Center, Puget Sound, Salish Sea, U.S. Geological Survey, USGS, USGS Coastal Habitats in Puget Sound Project (CHIPS), Water Depth, Whatcom County, aquatic vegetation, bathymetry, bathymetry measurement, elevation, marine geophysics, sea-floor characteristics, single-beam echo sounder, Fewer tags Model input and output files for modeling surface gravity waves on a schematized ancient lake on Mars This portion of the data release presents a wave model application developed to simulate wind generated surface gravity waves on an ancient lake on Mars. The phase-averaged wave model, SWAN, was applied within the Delft3D modeling system (Deltares, 2018) with reduced gravity and a range of atmospheric densities and wind speeds to simulate potential conditions that could generate wind waves on Mars. The data release includes model input files for simulations with three different atmospheric densities, compatible with version 4.04.01 of the Delft3D modeling system. Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Mars, PCMSC, Pacific Coastal and Marine Science Center, All tags... U.S. Geological Survey, USGS, coastal processes, geomorphology, geoscientificInformation, mathematical modeling, numerical modeling, planetary sciences, predictions, Fewer tags Bathymetry data and sediment transport modeling of a submerged nearshore berm at the mouth of the Columbia River, Oregon and Washington, 2020-2021 This data release contains gridded bathymetry data from repeated multibeam sonar surveys and input files for a hydrodynamic and sediment transport model application of the mouth of the Columbia River (MCR), Oregon and Washington. The bathymetry data were collected by the U.S. Army Corps of Engineers Portland District Surveys Section between September 9, 2020, and March 10, 2021, to characterize the morphology and dispersal of a nearshore berm composed of 216,000 m3 of sand-sized sediment that was dredged from the MCR navigation channel and placed on the northern flank of the ebb-tidal delta in water depths between 12 and 15 m. Observations of berm morphology were compared with predictions from a three-dimensional... Categories: Data; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Geomorphology, PCMSC, Pacific Coastal and Marine Science Center, All tags... U.S. Army Corps of Engineers, U.S. Geological Survey (USGS), USACE, USGS, bathymetry, bathymetry measurement, coastal processes, digital elevation models, elevation, marine water quality, mulit-beam echo sounder, numerical modeling, oceans, water circulation, water column features, Fewer tags Modeled surface waves from winds in South San Francisco Bay A model application using the phase-averaged wave model SWAN (in Delft3D) was developed to simulate wind waves in South San Francisco Bay, California, between 30 May 2021 and 19 May 2022. This data release describes the development of the model application, provides input files, and includes output from the model simulations in netCDF format. Model Application The model application included two domains (Fig. 1) that were 1-way coupled. The coarse overall model domain (wsfb_g1.grd) included the coastal ocean across the entire San Francisco Sacramento/San Joaquin Bay-Delta region was forced along the oceanic boundaries with measured time-varying, spatially uniform wave parameters derived from the Coastal Data Information... Categories: Data; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Geomorphology, PCMSC, Pacific Coastal and Marine Science Center, All tags... San Francisco Bay, State of California, Surface Wind Wave, U.S. Geological Survey, USGS, Water Column Features, bay, ocean waves, oceans, physical oceanography, waves, Fewer tags Salish Sea water level validation simulations: 2017-2020 Simulations of water levels in the Salish Sea over the period October 1, 2016 to September 30, 2020 were conducted to validate the Salish Sea hydrodynamic model. The model accounts for sea level position, tides, remote sea-level anomalies, local winds and storm surge and stream flows as they affect water density. Comparison of modeled and measured water levels showed the model predicts extreme water levels at NOAA and USGS tide gage stations within 0.15 m. Model inputs and outputs of time-series forcing and water levels, respectively, are presented. Categories: Data; Tags: CMHRP, Climate Change, Coastal and Marine Hazards and Resources Program, Distributions, Extreme Weather, All tags... Hazards Planning, Ocean Winds, PCMSC, Pacific Coastal and Marine Science Center, Predictions, Puget Sound, Salish Sea, State of Washington, Storms, U.S. Geological Survey, USGS, Wind, coastal processes, geoscientificInformation, numerical modeling, oceans, water level measurements, Fewer tags Orthomosaic images from UAS surveys of the beaches at Fort Stevens State Park, OR, and Cape Disappointment State Park, WA, July 2021 This portion of the data release presents high-resolution orthomosaic images of the ocean beach at Fort Stevens State Park, OR, and Benson Beach at Cape Disappointment State Park, WA. The orthomosaics have resolutions of 5 centimeters per pixel and were derived from structure-from-motion (SfM) processing of aerial imagery collected with unoccupied aerial systems (UAS) during low tide surveys on 22 and 23 July 2021. The raw imagery used to create the orthomosaics was acquired with a UAS fitted with a Ricoh GR II digital camera featuring a global shutter. The UAS was flown on pre-programmed autonomous flight lines spaced to provide approximately 70 percent overlap between images from adjacent lines. The camera was... Categories: Data; Tags: Bathymetry and Elevation, Benson Beach, CHMRP, Cape Disappointment, Clatsop County, All tags... Clatsop Spit, Coastal and Marine Hazards and Resources Program, Columbia River, Fort Stevens, North Head, PCMSC, Pacific Coastal and Marine Science Center, Pacific County, Pacific Ocean, State of Oregon, State of Washington, Structure-from-motion, U.S. Geological Survey, UAS, USGS, Unmanned aerial system, aerial and satellite photography, aerial photography, altimetry, elevation, geomorphology, geoscientificInformation, geospatial datasets, image mosaics, orthophotography, photography, remote sensing, remote sensing, topographic maps, topography, Fewer tags Bathymetry, topography, and sediment grain-size data from the Elwha River delta, Washington, July 2018 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 (USGS) developed an integrated research program aimed at understanding the ecosystem responses following dam removal. The research program included repeated surveys of beach topography, nearshore bathymetry, and surface sediment grain size to quantify changes in delta morphology... Tags: Geomorphology, Marine Geology Bathymetry data from repeated surveys of a submerged nearshore berm at the mouth of the Columbia River, Washington, 2020-2021 This portion of the USGS data release presents gridded bathymetry data derived from repeated bathymetric surveys conducted by the U.S. Army Corps of Engineers Portland District on the Pacific Ocean, Washington. Repeated surveys were performed between September 9, 2020 and March 10, 2021 from a vessel equipped with a multi-beam bathymetry system to characterize the morphology and dispersal of a nearshore berm composed of sediment dredged from the navigational channel at the mouth of the Columbia River. Digital data files containing gridded bathymetry data for each survey are provided in ESRI ARC ASCII (*.asc) format. Categories: Data; Tags: Bathymetry and Elevation, CMHRP, Coastal and Marine Hazards and Resources Program, Columbia River, GPS measurement, All tags... Global Positioning System (GPS) observations, PCMSC, Pacific Coastal and Marine Science Center, Pacific County, Pacific Ocean, U.S. Army Corps of Engineers, Portland District, U.S. Geological Survey, USACE, USGS, bathymetry, bathymetry measurement, digital elevation models, elevation, mulit-beam echo sounder, Fewer tags Tabulated wave parameter results from modeling surface gravity waves on a schematized ancient lake on Mars This portion of the data release presents tabulated wave parameter results derived from simulations of wind generated surface gravity waves on an ancient lake on Mars. The phase-averaged wave model, SWAN, was applied within the Delft3D modeling system (Deltares, 2018) with reduced gravity and a range of atmospheric densities and wind speeds to simulate potential conditions that could generate wind waves on Mars. Categories: Data; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Mars, PCMSC, Pacific Coastal and Marine Science Center, All tags... U.S. Geological Survey, USGS, coastal processes, geomorphology, geoscientificInformation, mathematical modeling, numerical modeling, planetary sciences, predictions, Fewer tags Hydrodynamic and sediment transport model of San Pablo Bay, California, Nov-Dec 2014 A three-dimensional hydrodynamic and sediment transport model of San Pablo and Suisun Bays was constructed using the Delft3D4 (D3D) modeling suite (Deltares, 2021a) to simulate water levels, flow, waves, and suspended sediment for time period of Nov 1 to Dec 31, 2014. This data release describes the construction and validation of the model application and provides input files suitable to run the model on D3D software version 4.04.01. Model description The San Pablo and Suisun Bay model was nested within an overall model for San Francisco Bay, also built using D3D. The overall model (figure 1A) was modified from the published tide model for San Francisco Bay (Elias and others, 2013). The 2D tide model was extended... Tags: Geophysics, Hydrology, Water Quality 1 2 »