Multibeam Echosounder, Reson T-20P tracklines, USGS field activity 2017-003-FA, Mississippi River Delta front offshore of southeastern Louisiana (Esri polyline shapefile, GCS WGS 84)

High resolution bathymetric, sea-floor backscatter, and seismic-reflection data were collected offshore of southeastern Louisiana aboard the research vessel Point Sur on May 19-26, 2017, in an effort to characterize mudflow hazards on the Mississippi River Delta front. As the initial field program of a research cooperative between the U.S. Geological Survey, the Bureau of Ocean Energy Management, and other Federal and academic partners, the primary objective of this cruise was to assess the suitability of sea-floor mapping and shallow subsurface imaging tools in the challenging environmental conditions found across delta fronts (for example, variably distributed water column stratification and widespread biogenic...

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: BOEM, Bureau of Ocean Energy Management, CMGP, Coastal and Marine Geology Program, Gulf of Mexico, All tags... Marine Geology, Mississippi River Delta front, Pass a Loutre, Reson, South Pass, Southeast Louisiana, Southwest Pass, T20P, U.S. Geological Survey, USGS, WHCMSC, Woods Hole Coastal and Marine Science Center, backscatter, bathymetry, bathymetry, field activity number 2017-003-FA, geoscientificInformation, location, marine geology, marine geophysics, multibeam backscatter, multibeam bathymetry, multibeam echosounder, multibeam sonar, navigational data, oceans, sea-floor acoustic reflectivity, shapefile, trackline navigation, Fewer tags

Uncertainty table for lidar-derived shorelines used when calculating rates in the Digital Shoreline Analysis System software for the South Shore of MA

The Massachusetts Office of Coastal Zone Management launched the Shoreline Change Project in 1989 to identify erosion-prone areas of the coast. The shoreline position and change rate are used to inform management decisions regarding the erosion of coastal resources. In 2001, a 1994 shoreline was added to calculate both long- and short-term shoreline change rates at 40-meter intervals along ocean-facing sections of the Massachusetts coast. In 2013 two oceanfront shorelines for Massachusetts were added using 2008-2009 color aerial orthoimagery and 2007 topographic lidar datasets obtained from NOAA's Ocean Service, Coastal Services Center. This 2018 update includes two new mean high water (MHW) shorelines for the Massachusetts...

Tags: Atlantic Coast, Coastal and Marine Geology Program, DSAS, Database IV format, Digital Shoreline Analysis System, All tags... MA CZM, MHW, Massachusetts, Massachusetts Coastal Zone Management, Massachusetts Shoreline Change Project, Mean High Water, National Assessment of Shoreline Change Project, New England, Shoreline, Shoreline Change, South Shore, U.S. Geological Survey, USGS, United States, WHCMSC, Woods Hole Coastal and Marine Science Center, coastal processes, environment, geoscientificInformation, lidar uncertainty, oceans, statistical analysis, Fewer tags

Multibeam backscatter data collected within Lake Powell, UT-AZ during USGS Field Activity 2017-049-FA, using a dual-head Reson T20-P multibeam echosounder (8-bit GeoTIFF, UTM Zone 12N, WGS 84, 2 meter resolution)

High-resolution geophysical mapping of Lake Powell in the Glen Canyon National Recreation Area in Utah and Arizona was conducted between October 8 and November 15, 2017, as part of a collaborative effort between the U.S. Geological Survey and the Bureau of Reclamation to provide high-quality data needed to reassess the area-capacity tables for the Lake Powell reservoir. Seismic data collected during this survey can help to define the rates of deposition within the San Juan and Colorado Rivers, which are the main inflows to Lake Powell. These new data are intended to improve water budget management decisions that affect the natural and recreational resources of the reservoir. Multibeam echosounder bathymetry and...

Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: Antelope Canyon, BOR, Bullfrog, Bullfrog Bay, Bureau of Reclamation, All tags... CMGP, CRSP, Coastal and Marine Geology Program, Coconino County, Colorado River, Colorado River Storage Project, DOI, Dangling Rope, Department of the Interior, Escalante River, Friendship Bay, Garfield County, GeoTIFF, Glen Canyon, Glen Canyon Dam, Glen Canyon National Recreation Area, Good Hope Bay, Great Bend, Gunsight Bay, Halls Bay, Halls Crossing, Hite, Kane County, Lake Powell, Last Chance Bay, NPS, National Park Service, Navajo Canyon, Padre Bay, Page, R/V Stephens, Rainbow Bridge National Monument, Rock Creek Bay, San Juan County, San Juan River, State of Arizona, State of Utah, T20-P, U.S. Geological Survey, USGS, UWSC, United States of America, Utah Water Science Center, WHCMSC, Wahweap, Wahweap Bay, Warm Creek Bay, Woods Hole Coastal and Marine Science Center, backscatter, field activity number 2017-049-FA, geology, geophysics, geoscientificInformation, geospatial datasets, imageryBaseMapsEarthCover, inlandWaters, lakebed acoustic reflectivity, lakebed characteristics, multibeam backscatter, multibeam echosounder, multibeam sonar, time-series, Fewer tags

Flood-Inundation Depth Grids for Dardenne Creek Backwater, St. Charles County, Missouri, 2019

Digital flood-inundation maps for a 9.9-mile reach of Dardenne Creek, St. Charles County, Missouri, were created by the U.S. Geological Survey (USGS) in cooperation with St. Charles County, Missouri Department of Transportation, and the cities of O'Fallon and St. Peters, Missouri. The flood-inundation maps, which can be accessed through the USGS Flood Inundation Mapping Science Program at http://water.usgs.gov/osw/flood_inundation/ , depict estimates of the areal extent and depth of flooding corresponding to select water levels (stages) at the USGS streamgages 05514860 Dardenne Creek at Old Town St. Peters, Missouri, and 05587450 Mississippi River at Grafton, Illinois. Near-real-time stages at these streamgages...

Tags: Dardenne Creek Backwater, Missouri, St. Charles County, flood-inundation maps, flooded area, All tags... floods, geospatial analysis, high-water marks, river/stream, Fewer tags

Location of bottom photographs along with images collected in July 2016 by the U.S. Geological Survey off Town Neck Beach, Sandwich, Massachusetts, during field activity 2016-037-FA (JPEG images, point shapefile, and CSV file)

Geophysical and geological survey data were collected off Town Neck Beach in Sandwich, Massachusetts, in May and July 2016. Approximately 130 linear kilometers of subbottom (seismic-reflection) and 234-kilohertz interferometric sonar (bathymetric and backscatter) data were collected along with sediment samples, sea floor photographs, and (or) video at 26 sites within the geophysical survey area. Sediment grab samples were collected at 19 of the 26 sampling sites and video and (or) photographic imagery of the sea floor were taken at all 26 sites. These survey data are used to characterize the sea floor by identifying sediment-texture, seabed morphology, and underlying geologic structure and stratigraphy. Data collected...

Categories: Data; Tags: Atlantic Ocean, CMGP, Cape Cod, Cape Cod Bay, Coastal and Marine Geology Program, All tags... GoPro HERO4 Black, Gulf of Maine, JPEG, JPG, Massachusetts, North America, R/V Rafael, SEABOSS, SEABed Observation and Sampling System, Sandwich, Town Neck Beach, U.S. Geological Survey, USGS, United States, Van Veen grab sampler, WHCMSC, Woods Hole Coastal and Marine Science Center, bay, bottom imagery, bottom photographs, continental shelf, field activity 2016-037-FA, geoscientificInformation, ground-truth, image collections, imagery, location, marine geology, marine geology, marine geology, navigational data, oceans, photographic sampling, photography, photography, photos, sea floor, sea-floor characteristics, seabed imagery, seabed photographs, seafloor, sediments, shapefile, stations, underwater photography, Fewer tags

Baselines for Outer Cape Cod, Massachusetts, generated to calculate shoreline change rates using the Digital Shoreline Analysis System version 5.1

The Massachusetts Office of Coastal Zone Management launched the Shoreline Change Project in 1989 to identify erosion-prone areas of the coast by compiling a database of historical (mid 1800's-1989) shoreline positions. Trends of shoreline position over long and short-term timescales provide information to landowners, managers, and potential buyers about possible future impacts to coastal resources and infrastructure. In 2001, a 1994 shoreline was added to calculate both long- and short-term shoreline change rates along ocean-facing sections of the Massachusetts coast. In 2013, two oceanfront shorelines for Massachusetts were added using 2008-2009 color aerial orthoimagery and 2007 topographic lidar datasets obtained...

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Atlantic Coast, Baseline, CMGP, Cape Cod, Coastal and Marine Geology Program, All tags... DSAS, Digital Shoreline Analysis System, Massachusetts, New England, North America, Outer Cape, Shoreline, Shoreline Change, U.S. Geological Survey, USGS, United States, WHCMSC, Woods Hole Coastal and Marine Science Center, coastal processes, environment, geoscientificInformation, geospatial datasets, oceans, Fewer tags

Uncertainty of forecasted shoreline positions for Florida and Georgia

During Hurricane Irma, Florida and Georgia experienced substantial impacts to beaches, dunes, barrier islands, and coral reefs. Extensive erosion and coral losses from hurricanes result in increased vulnerability of coastal regions, including densely populated areas. Erosion may put critical infrastructure at risk of future flooding and may cause economic loss. The U.S. Geological Survey (USGS) Coastal and Marine Hazards Resources Program is working to assess shoreline erosion along the southeast U.S. coastline and analyze its implications for future vulnerability.

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Coastal and Marine Geology Program, DSAS, Digital Shoreline Analysis System, Florida, Georgia, All tags... Kalman filter, Shoreline Forecasting, Shoreline Forecasting Uncertainty, U.S. Geological Survey, USGS, United States, WHCMSC, Woods Hole Coastal and Marine Science Center, coastal processes, environment, geoscientificInformation, geospatial datasets, oceans, Fewer tags

Mean tidal range of marsh units in Massachusetts salt marshes

This data release contains coastal wetland synthesis products for Massachusetts, developed in collaboration with the Massachusetts Office of Coastal Zone Management. Metrics for resiliency, including unvegetated to vegetated ratio (UVVR), marsh elevation, and tidal range are calculated for smaller units delineated from a digital elevation model, providing the spatial variability of physical factors that influence wetland health. The U.S. Geological Survey has been expanding national assessment of coastal change hazards and forecast products to coastal wetlands with the intent of providing Federal, State, and local managers with tools to estimate the vulnerability and ecosystem service potential of these wetlands....

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Buzzards Bay, Cape Cod, Cape Cod Bay, Cape Cod National Seashore, Danvers River, All tags... Duxbury Bay, Essex Bay, Great Marsh Area of Critical Environmental Concern, Ipswich River, Martha's Vineyard, Massachusetts, Massachusetts Bay, Merrimack River, Nantucket, Neponset River, North River, Parker River National Wildlife Refuge, Parker River/Essex Bay Area of Critical Environmental Concern, Pines River, Pleasant Bay Area of Critical Environmental Concern, Plum Island, Sandy Neck/Barnstable Area of Critical Environmental Concern, Scituate Harbor, South River, United States, Wellfleet Harbor Area of Critical Environmental Concern, Weymouth Back River, Weymouth Fore River, coastal ecosystems, coastal processes, environment, estuary, geospatial datasets, inlandWaters, marsh health, oceans, salt marsh, tidal range, tides (oceanic), vegetation, wetland ecosystems, wetland functions, Fewer tags

Elevation of marsh units in Massachusetts salt marshes

This data release contains coastal wetland synthesis products for Massachusetts, developed in collaboration with the Massachusetts Office of Coastal Zone Management. Metrics for resiliency, including unvegetated to vegetated ratio (UVVR), marsh elevation, and tidal range are calculated for smaller units delineated from a digital elevation model, providing the spatial variability of physical factors that influence wetland health. The U.S. Geological Survey has been expanding national assessment of coastal change hazards and forecast products to coastal wetlands with the intent of providing Federal, State, and local managers with tools to estimate the vulnerability and ecosystem service potential of these wetlands....

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Buzzards Bay, Cape Cod, Cape Cod Bay, Cape Cod National Seashore, Danvers River, All tags... Duxbury Bay, Essex Bay, Great Marsh Area of Critical Environmental Concern, Ipswich River, Martha's Vineyard, Massachusetts, Massachusetts Bay, Merrimack River, Nantucket, Neponset River, North River, Parker River National Wildlife Refuge, Parker River/Essex Bay Area of Critical Environmental Concern, Pines River, Pleasant Bay Area of Critical Environmental Concern, Plum Island, Sandy Neck/Barnstable Area of Critical Environmental Concern, Scituate Harbor, South River, United States, Wellfleet Harbor Area of Critical Environmental Concern, Weymouth Back River, Weymouth Fore River, coastal ecosystems, coastal processes, elevation, elevation, environment, estuary, geospatial datasets, inlandWaters, marsh health, oceans, salt marsh, vegetation, wetland ecosystems, wetland functions, Fewer tags

Geospatial Characterization of Salt Marshes for Massachusetts

This data release contains coastal wetland synthesis products for Massachusetts, developed in collaboration with the Massachusetts Office of Coastal Zone Management. Metrics for resiliency, including unvegetated to vegetated ratio (UVVR), marsh elevation, and tidal range are calculated for smaller units delineated from a digital elevation model, providing the spatial variability of physical factors that influence wetland health. The U.S. Geological Survey has been expanding national assessment of coastal change hazards and forecast products to coastal wetlands with the intent of providing Federal, State, and local managers with tools to estimate the vulnerability and ecosystem service potential of these wetlands....

Tags: Buzzards Bay, Cape Cod, Cape Cod Bay, Cape Cod National Seashore, Danvers River, All tags... Duxbury Bay, Essex Bay, Great Marsh Area of Critical Environmental Concern, Ipswich River, Martha's Vineyard, Massachusetts, Massachusetts Bay, Merrimack River, Nantucket, Neponset River, North River, Parker River National Wildlife Refuge, Parker River/Essex Bay Area of Critical Environmental Concern, Pines River, Pleasant Bay Area of Critical Environmental Concern, Plum Island, Sandy Neck/Barnstable Area of Critical Environmental Concern, Scituate Harbor, South River, United States, Wellfleet Harbor Area of Critical Environmental Concern, Weymouth Back River, Weymouth Fore River, coastal ecosystems, coastal processes, environment, estuary, geospatial datasets, inlandWaters, marsh health, oceans, salt marsh, vegetation, wetland ecosystems, wetland functions, Fewer tags

Intersects for the coastal region around Boston, Massachusetts, generated to calculate shoreline change rates using the Digital Shoreline Analysis System version 5.1

The Massachusetts Office of Coastal Zone Management launched the Shoreline Change Project in 1989 to identify erosion-prone areas of the coast and support local land-use decisions. Trends of shoreline position over long and short-term timescales provide information to landowners, managers, and potential buyers about possible future impacts to coastal resources and infrastructure. In 2001, a 1994 shoreline was added to calculate both long- and short-term shoreline change rates along ocean-facing sections of the Massachusetts coast. In 2013 two oceanfront shorelines for Massachusetts were added using 2008-2009 color aerial orthoimagery and 2007 topographic lidar datasets obtained from NOAA's Ocean Service, Coastal...

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Atlantic Coast, Boston, CMGP, Coastal and Marine Geology Program, DSAS, All tags... Digital Shoreline Analysis System, Intersects, Massachusetts, North America, Shoreline, Shoreline Change, U.S. Geological Survey, USGS, United States, WHCMSC, Woods Hole Coastal and Marine Science Center, coastal processes, environment, geoscientificInformation, geospatial datasets, oceans, Fewer tags

Intersects for coastal region of Cape Cod Bay, Massachusetts, generated to calculate shoreline change rates using the Digital Shoreline Analysis System version 5.1

The Massachusetts Office of Coastal Zone Management launched the Shoreline Change Project in 1989 to identify erosion-prone areas of the coast and support local land-use decisions. Trends of shoreline position over long and short-term timescales provide information to landowners, managers, and potential buyers about possible future impacts to coastal resources and infrastructure. In 2001, a 1994 shoreline was added to calculate both long- and short-term shoreline change rates along ocean-facing sections of the Massachusetts coast. In 2013 two oceanfront shorelines for Massachusetts were added using 2008-2009 color aerial orthoimagery and 2007 topographic lidar datasets obtained from NOAA's Ocean Service, Coastal...

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Atlantic Coast, CMGP, Cape Cod, Cape Cod Bay, Coastal and Marine Geology Program, All tags... DSAS, Digital Shoreline Analysis System, Intersects, Massachusetts, North America, Shoreline, Shoreline Change, U.S. Geological Survey, USGS, United States, WHCMSC, Woods Hole Coastal and Marine Science Center, coastal processes, environment, geoscientificInformation, geospatial datasets, oceans, Fewer tags

Long-term and short-term shoreline change rates for the region of Buzzards Bay, Massachusetts, calculated with and without the proxy-datum bias using the Digital Shoreline Analysis System version 5.1

The Massachusetts Office of Coastal Zone Management launched the Shoreline Change Project in 1989 to identify erosion-prone areas of the coast and support local land-use decisions. Trends of shoreline position over long and short-term timescales provide information to landowners, managers, and potential buyers about possible future impacts to coastal resources and infrastructure. In 2001, a 1994 shoreline was added to calculate both long- and short-term shoreline change rates along ocean-facing sections of the Massachusetts coast. In 2013 two oceanfront shorelines for Massachusetts were added using 2008-2009 color aerial orthoimagery and 2007 topographic lidar datasets obtained from NOAA's Ocean Service, Coastal...

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Accretion, Atlantic Coast, Baseline, Buzzards Bay, CMGP, All tags... Coastal and Marine Geology Program, DSAS, Digital Shoreline Analysis System, Erosion, Esri polyline shapefile, Historical Shoreline, LRR, Linear Regression Rate, Long-term, Massachusetts, Massachusetts Office of Coastal Zone Management, New England, Shoreline, Shoreline Change Rate, Short-term, Transect, U.S. Geological Survey, USGS, United States, WHCMSC, Woods Hole Coastal and Marine Science Center, coastal processes, geoscientificInformation, geospatial datasets, oceans, Fewer tags

Intersects for coastal region of Buzzards Bay, Massachusetts, generated to calculate shoreline change rates using the Digital Shoreline Analysis System version 5.1

The Massachusetts Office of Coastal Zone Management launched the Shoreline Change Project in 1989 to identify erosion-prone areas of the coast and support local land-use decisions. Trends of shoreline position over long and short-term timescales provide information to landowners, managers, and potential buyers about possible future impacts to coastal resources and infrastructure. In 2001, a 1994 shoreline was added to calculate both long- and short-term shoreline change rates along ocean-facing sections of the Massachusetts coast. In 2013 two oceanfront shorelines for Massachusetts were added using 2008-2009 color aerial orthoimagery and 2007 topographic lidar datasets obtained from NOAA's Ocean Service, Coastal...

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Atlantic Coast, Buzzards Bay, CMGP, Coastal and Marine Geology Program, DSAS, All tags... Digital Shoreline Analysis System, Intersects, Massachusetts, North America, Shoreline, Shoreline Change, U.S. Geological Survey, USGS, United States, WHCMSC, Woods Hole Coastal and Marine Science Center, coastal processes, environment, geoscientificInformation, geospatial datasets, oceans, Fewer tags

Ground control points Head of the Meadow Beach, Truro, MA on March 10, 2023

The data in this release re-map the beach and nearshore environment at Head of the Meadow Beach in Truro, MA and provide updated environmental context for the 2020 CoastCam installation that looks out at the coast shared by beachgoers, shorebirds, seals, and sharks. This is related to the field activity 2022-015-FA and a collaboration with the National Park Service at Cape Cod National Seashore to monitor the region that falls within the field of view of CoastCam CACO-01, which are two video cameras aimed at the beach. In March and April 2023, U.S. Geological Survey and Woods Hole Oceanographic Institute (WHOI) scientists conducted field surveys to collect topographic and bathymetric data. Images of the beach for...

Categories: Data; Tags: AeroPoint, CMHRP, Cape Cod, Coastal and Marine Hazards and Resources Program, GPS measurement, All tags... Global Positioning System (GPS) observations, Ground control point, Head of the Meadow Beach, Helikite, Massachusetts, Truro, U.S. Geological Survey, USGS, United States, WHCMSC, Woods Hole Coastal and Marine Science Center, elevation, geolocation measurement, geoscientificInformation, location, oceans, shoreline, Fewer tags

Bathymetric data and grid of offshore Marconi Beach, Wellfleet, MA on March 20, 2023

The data in this release re-map the beach and nearshore environment at Marconi Beach in Wellfleet, MA and provide updated environmental context for the 2021 CoastCam installation that looks out at the coast shared by beachgoers, shorebirds, seals, and sharks. This is related to the field activity 2022-014-FA and a collaboration with the National Park Service at Cape Cod National Seashore to monitor the region that falls within the field of view of CoastCam CACO-02, which are two video cameras aimed at the beach. In March 2023, U.S. Geological Survey and Woods Hole Oceanographic Institute (WHOI) scientists conducted field surveys to collect topographic and bathymetric data. Images of the beach for use in structure-from-motion...

Categories: Data; Tags: ASV, CMHRP, Cape Cod, Coastal and Marine Hazards and Resources Program, Marconi Beach, All tags... Massachusetts, National Seashore, U.S. Geological Survey, USGS, United States, WHCMSC, WHOI, Wellfleet, Woods Hole Coastal and Marine Science Center, Woods Hole Oceanographic Institution, Yellowfin, bathymetry, elevation, geoscientificInformation, geospatial data, location, oceans, remote sensing, shoreline, single-beam echo sounder, single-beam echo sounder, Fewer tags

Ground control points Marconi Beach, Wellfleet, MA on March 22, 2023

The data in this release re-map the beach and nearshore environment at Marconi Beach in Wellfleet, MA and provide updated environmental context for the 2021 CoastCam installation that looks out at the coast shared by beachgoers, shorebirds, seals, and sharks. This is related to the field activity 2022-014-FA and a collaboration with the National Park Service at Cape Cod National Seashore to monitor the region that falls within the field of view of CoastCam CACO-02, which are two video cameras aimed at the beach. In March 2023, U.S. Geological Survey and Woods Hole Oceanographic Institute (WHOI) scientists conducted field surveys to collect topographic and bathymetric data. Images of the beach for use in structure-from-motion...

Categories: Data; Tags: AeroPoint, CMHRP, Cape Cod, Coastal and Marine Hazards and Resources Program, GPS measurement, All tags... Global Positioning System (GPS) observations, Ground control point, Helikite, Marconi Beach, Massachusetts, U.S. Geological Survey, USGS, United States, WHCMSC, Wellfleet, Woods Hole Coastal and Marine Science Center, elevation, geolocation measurement, geoscientificInformation, location, oceans, Fewer tags

Nearshore bathymetry of the Columbia River littoral cell, Washington and Oregon, 2014

This portion of the USGS data release presents bathymetry data collected during surveys performed in the Columbia River littoral cell, Washington and Oregon in 2014 (USGS Field Activity Number 2014-631-FA). Bathymetry data were collected using four personal watercraft (PWCs) equipped with single-beam sonar systems and global navigation satellite system (GNSS) receivers. The sonar systems consisted of an Odom Echotrac CV-100 single-beam echosounder and 200 kHz transducer with a 9 degree beam angle. Raw acoustic backscatter returns were digitized by the echosounder with a vertical resolution of 1.25 cm. Depths from the echosounders were computed using sound velocity profiles measured using a YSI CastAway CTD during...

Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Bathymetry and Elevation, CMHRP, Clatsop County, Coastal and Marine Hazards and Resources Program, Columbia River, All tags... Echo Sounders, GPS (Global Positioning System), GPS measurement, Global Positioning System (GPS) observations, Grays Harbor County, PCMSC, Pacific Coastal and Marine Science Center, Pacific County, Pacific Ocean, U.S. Geological Survey, USGS, Water Depth, bathymetry, bathymetry measurement, elevation, single-beam echo sounder, Fewer tags

Computed Tomography (CT) scans, photographs, X-ray Fluorescence (XRF) scans, grain size, and gamma-ray bulk density data of vibracores from Searsville Lake, Jasper Ridge Biological Preserve, Stanford, California

This data release presents measurements and data from two vibracores (JRBP2018-VC01A and JRBP2018-VC01B) collected from Searsville Lake, a reservoir in Jasper Ridge Biological Preserve, Stanford, California, on October 29, 2018 (USGS Field Activity 2018-682-FA).

Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Jasper Ridge, PCMSC, Pacific Coastal and Marine Science Center, All tags... San Mateo County, Searsville Lake, Stanford, State of California, U.S. Geological Survey, USGS, geochemistry, geoscientificInformation, limnology, sediment, Fewer tags

Vegetation biomass and density from three locations in the Sacramento-San Joaquin Delta, California, 2017 to 2018

Vegetation type and density data were collected by the U.S. Geological Survey (USGS) Pacific Coastal and Marine Science Center at three locations in the Sacramento-San Joaquin Delta. Data were collected in Lindsey Slough in April 2017, and Middle River and the Mokelumne River in March 2018. Vegetation samples were collected by divers, and used to determine dry biomass density. These data were collected as part of a cooperative project, with the USGS California Water Science Center and the California Department of Fish and Wildlife, on the effects of invasive aquatic vegetation on sediment transport in the Sacramento-San Joaquin Delta.

Categories: Data; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Invasive Species, Lindsey Slough, Marsh, All tags... Middle River, Mokelumne River, PCMSC, Pacific Coastal and Marine Science Center, Sacramento-San Joaquin Delta, Sedimentation, State of California, Substrate, U.S. Geological Survey, USGS, aquatic ecosystems, botany, inland waters, invasive species, plant testing, plot sampling, specimen collecting, Fewer tags