Polygon shapefile of data sources used to create a composite multibeam bathymetry surface of the southern Cascadia Margin offshore Oregon and northern California (ver. 2.0, April 2026)

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Peter Dartnell
Originator: Jane A. Rudebusch
Originator: James E. Conrad
Originator: Janet T. Watt
Originator: Jenna C. Hill
Publication_Date: 20260402
Title:
Polygon shapefile of data sources used to create a composite multibeam bathymetry surface of the southern Cascadia Margin offshore Oregon and northern California (ver. 2.0, April 2026)
Edition: 2.0
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/P9C5DBMR
Publication_Information:
Publication_Place:
Pacific Coastal and Marine Science Center, Santa Cruz, California
Publisher: U.S. Geological Survey
Online_Linkage: https://doi.org/10.5066/P9C5DBMR
Larger_Work_Citation:
Citation_Information:
Originator: Peter Dartnell
Originator: Jane A. Rudebusch
Originator: James E. Conrad
Originator: Janet T. Watt
Originator: Jenna C. Hill
Publication_Date: 2021
Title:
Composite multibeam bathymetry surface and data sources of the southern Cascadia Margin offshore Oregon and northern (ver. 2.0, April 2026) California
Edition: 2.0
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/P9C5DBMR
Publication_Information:
Publication_Place:
Pacific Coastal and Marine Science Center, Santa Cruz, California
Publisher: U.S. Geological Survey
Online_Linkage: https://doi.org/10.5066/P9C5DBMR
Description:
Abstract:
This polygon shapefile describes the data sources used to create a composite 30-m resolution multibeam bathymetry surface of southern Cascadia Margin offshore Oregon and northern California.
Purpose:
Between 2018-2022 the NOAA ships Rainier and Fairweather collected multibeam bathymetry data in 7 areas along the southern Cascadia Margin as part of a cooperative project between the U.S. Geological Survey, Pacific Coastal and Marine Science Center and NOAA. These regions were combined with other publicly available multibeam bathymetry data. The surface was generated to assist research projects studying offshore geohazards including mapping faults, submarine landslides, sediment transport pathways, and seafloor seeps. This shapefile describes the sources used to create the composite multibeam bathymetry surface. These data are not intended to be used for navigation.
Supplemental_Information:
Additional information about the USGS field activities from which some of these data were derived is available online at:
https://cmgds.marine.usgs.gov/fan_info.php?fan=2018-642-FA https://cmgds.marine.usgs.gov/fan_info.php?fan=2019-636-FA https://cmgds.marine.usgs.gov/fan_info.php?fan=2021-643-FA
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in Esri format, this metadata file may include some Esri-specific terminology.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1995
Ending_Date: 2023
Currentness_Reference: ground condition at time data were collected.
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -125.58
East_Bounding_Coordinate: -124.21
North_Bounding_Coordinate: 43.47
South_Bounding_Coordinate: 40.16
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:7ab095ee-e470-4972-9dd4-0bd114206bc5
Theme:
Theme_Keyword_Thesaurus: Global Change Master Directory (GCMD)
Theme_Keyword: Bathymetry
Theme_Keyword: Seafloor Topography
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: bathymetry
Theme_Keyword: bathymetry measurement
Theme_Keyword: sea-floor characteristics
Theme_Keyword: geospatial datasets
Theme_Keyword: marine geophysics
Theme_Keyword: multibeam sonar
Theme:
Theme_Keyword_Thesaurus: Data Categories for Marine Planning
Theme_Keyword: Bathymetry and Elevation
Theme:
Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords
Theme_Keyword: seabed
Theme_Keyword: field observation
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Hazards and Resources Program
Theme_Keyword: CMHRP
Theme_Keyword: Pacific Coastal and Marine Science Center
Theme_Keyword: PCMSC
Place:
Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
Place_Keyword: State of Oregon
Place_Keyword: State of California
Place_Keyword: Cascadia Margin
Access_Constraints: No access constraints
Use_Constraints:
USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originators of the dataset and in products derived from these data. Portions of the map used data provided by the Ocean Exploration Trust's (OET) Nautilus Exploration Program, Cruises NA072, NA078, NA080, NA082, NA122, and NA130. This information is not intended for navigation purposes.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Contact_Person: PCMSC Science Data Coordinator
Contact_Address:
Address_Type: mailing and physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060
Contact_Voice_Telephone: 831-427-4747
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name: SouthernCascadia_30m_datasources_V2.png
Browse_Graphic_File_Description:
Quick view image of the data source polygon shapefile used to create a southern Cascadia Margin composite multibeam bathymetry surface
Browse_Graphic_File_Type: PNG
Native_Data_Set_Environment:
ArcMap (ver. 10.3.1) on a Windows 10 computer and ArcGIS Pro (version 3.5.5) on a Windows 11 computer.
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: No formal attribute accuracy tests were conducted.
Logical_Consistency_Report: No formal logical accuracy tests were conducted.
Completeness_Report:
Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Polygons were hand-drawn around each individual multibeam bathymetry dataset.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report: not applicable
Lineage:
Process_Step:
Process_Description:
The Ocean Exploration Trust's, Nautilus Exploration Program collected multibeam echosounder data along the southern Cascadia Margin between 2016 and 2020 (OET survey ID's NA072, NA078, NA080, NA082, and NA122). The U.S. Geological Survey, Pacific Coastal and Marine Science Center requested and received both raw line files and processed grids (these data are now available from NOAA, National Centers for Environmental Information, https://ngdc.noaa.gov/mgg/bathymetry/multibeam.html). Raw survey line files were imported and processed in Caris HIPS and SIPS software (version 11). The data were gridded into 30-m surfaces and exported as GeoTIFF or ASCIIRaster files and imported into ArcMap.
Process_Date: 2020
Process_Step:
Process_Description:
Publicly available multibeam echosounder data available from NOAA, National Centers for Environmental Information were downloaded from https://ngdc.noaa.gov/mgg/bathymetry/multibeam.html. Survey ID's include AT26-02, SKQ201607S, SKQ201804S, HLY18TB, MV1405, TN265, TN240, EX0907, RR1803, and SR1810. The raw survey and transit lines files were imported and processed in Caris HIPS and SIPS software (version 11). The data were gridded into 30-m surfaces and exported as GeoTIFF or ASCIIRaster files and imported into ArcMap.
Process_Date: 2020
Process_Step:
Process_Description:
California Seafloor Mapping Program multibeam echosounder data collected nearshore in the State waters of California and southern Oregon (Survey ID's H12130, H12131, H11985, H11983, H11982, H11981, H11980, H11979, H11978, H11977, H11976, H11975, H11974, H11973) were downloaded as BAG files from NOAA, NCEI, https://ngdc.noaa.gov/mgg/bathymetry/relief.html. The BAG files were imported into ArcMap and resampled to 30-m resolution.
Process_Date: 2020
Process_Step:
Process_Description:
A processed multibeam bathymetry grid from Monterey Bay Aquarium Research Institute (MBARI) was downloaded as an ASCIIRaster file from http://www3.mbari.org/data/mapping/NorCal_Oregon_Margin/eel_river.htm (EelriverA.asc.gz). The bathymetry data were imported into ArcMap and projected from geographic coordinates to UTM, zone 10, WGS84 coordinates. The UTM grid was reprojected to UTM, zone 10, NAD83 coordinates and resampled to 30-m resolution.
Process_Date: 2020
Process_Step:
Process_Description:
Accessed processed multibeam bathymetry data collected by the USGS during field activity 2014-607-FA. Cochrane, G.R., Dartnell, P., Hemery, L.G., and Hatcher, G., 2017, Data release for USGS field activity 2014-607-FA, Oregon OCS seafloor mapping: selected lease blocks relevant to renewable energy (ver. 2.0, July 2017), U.S. Geological Survey data release, https://doi.org/10.5066/F7V40S8V
Process_Date: 2020
Process_Step:
Process_Description:
Accessed from U.S Geological Survey, Pacific Coastal and Marine Science Center archives, processed multibeam bathymetry data collected in 1995 by the R/V Pacific Hunter as part of the STRATAFORM Project. Mayer, L., and J. Hughes Clarke, (1995). STRATAFORM Cruise Report: R/V Pacific Hunter, Multibeam Survey, July 14-28.
Process_Date: 2020
Process_Step:
Process_Description:
In 2018 and 2019 the NOAA ships Rainier and Fairweather mapped five regions along the southern Cascadia Margin (NOAA survey IDs H13117, H13118, H13206, W00474, and W00475) using Kongsberg EM-710 multibeam echosounders. These bathymetry surfaces are available from NOAA, National Centers for Environmental Information and were downloaded from https://ngdc.noaa.gov/mgg/bathymetry/multibeam.html as BAG files. The BAG files were imported into Caris HIPS and SIPS, version 11 and converted to LAS files. The files were imported into ArcMap, version 10.8.1 and converted to grids.
Process_Date: 2021
Process_Step:
Process_Description:
Polygons were drawn by hand around each of the above bathymetry grids in ArcMap (ver. 10.3.1). Attributes were assigned to each polygon including mapping group, year, multibeam system, source information, and data quality.
Process_Date: 2021
Process_Step:
Process_Description:
In 2021 and 2022 the NOAA ship Fairweather mapped two regions along the southern Cascadia Margin (NOAA survey IDs H13549, H13691) using Kongsberg EM-710 multibeam echosounders. Bathymetry surfaces are available from NOAA, National Centers for Environmental Information at https://ngdc.noaa.gov/mgg/bathymetry/multibeam.html as BAG files. The raw survey and transit line files were obtained from NOAA and imported and processed in Caris HIPS and SIPS software (version 11). The data were gridded into 30-m surfaces and exported as GeoTIFF rasters and then imported into Esri ArcGIS Pro (version 3.5.5).
Process_Date: 2023
Process_Step:
Process_Description:
In 2022 and 2023 the NOAA ship Okeanos Explorer mapped three regions along the southern Cascadia Margin (NOAA survey IDs EX2208, EX2301, EX2307) using Kongsberg EM-304 multibeam echosounders. Bathymetry surfaces are available from NOAA, National Centers for Environmental Information at https://ngdc.noaa.gov/mgg/bathymetry/multibeam.html as GeoTIFF files. The raw survey and transit line files were downloaded, then imported and processed in Caris HIPS and SIPS software (version 11). The data were processed gridded into 30-m surfaces and exported as GeoTIFF rasters and then imported into Esri ArcGIS Pro (version 3.5.5).
Process_Date: 2026
Process_Step:
Process_Description:
In 2021 the Ocean Exploration Trust's E/V Nautilus mapped a region along the southern Cascadia Margin (NA130) using a Kongsberg EM-302 multibeam echosounder. Bathymetry data are available from NOAA, National Centers for Environmental Information at https://ngdc.noaa.gov/mgg/bathymetry/multibeam.html as GSF files. The raw survey and transit line files were downloaded, then imported and processed in Caris HIPS and SIPS software (version 11). The data were processed gridded into 30-m surfaces and exported as GeoTIFF raster and then imported into Esri ArcGIS Pro (version 3.5.5).
Process_Date: 2026
Process_Step:
Process_Description:
Publicly available multibeam echosounder data available from NOAA, National Centers for Environmental Information were downloaded from https://ngdc.noaa.gov/mgg/bathymetry/multibeam.html. Survey ID's include AT42-16 and MGL2211. The raw survey and transit line files were imported and processed in Caris HIPS and SIPS software (version 11). The data were gridded into 30-m surfaces and exported as GeoTIFF files and imported into Esri ArcGIS Pro (version 3.5.5).
Process_Date: 2026
Process_Step:
Process_Description:
Polygons were drawn by hand around each of the above bathymetry grids (EX2208, EX2301, EX2307, NA130, AT42-16, MGL2211, H13549, H13691) in ArcGIS Pro (version 3.5.5). Attributes were assigned to each polygon including mapping group, year, multibeam system, source information, and data quality.
Process_Date: 2026
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 38
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 10
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -123.00000
Latitude_of_Projection_Origin: 0.00000
False_Easting: 500000.0
False_Northing: 0.00
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.1
Ordinate_Resolution: 0.1
Planar_Distance_Units: Meters
Geodetic_Model:
Horizontal_Datum_Name: NAD83
Ellipsoid_Name: GRS80
Semi-major_Axis: 6378137.00
Denominator_of_Flattening_Ratio: 298.257222101
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: SouthernCascadia_bathy_sources_v2
Entity_Type_Definition:
Table containing attribute information associated with the data set.
Entity_Type_Definition_Source: USGS
Attribute:
Attribute_Label: FID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 37
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain: shape defining the features.
Attribute:
Attribute_Label: Ship
Attribute_Definition: name of the survey vessel
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Unrepresentable_Domain: name of the survey vessel
Attribute:
Attribute_Label: Multibeam
Attribute_Definition: multibeam system used to collect data
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Unrepresentable_Domain:
type and model of various instrument(s) used to collect the multibeam data on each cruise
Attribute:
Attribute_Label: Year
Attribute_Definition: Year of data collection
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Unrepresentable_Domain: Year of data collection
Attribute:
Attribute_Label: Cruise_ID
Attribute_Definition: Cruise ID
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Unrepresentable_Domain: unique cruise identification assigned by each institution
Attribute:
Attribute_Label: Vert_Cont
Attribute_Definition: Original vertical reference datum
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Unrepresentable_Domain: Original vertical reference datum
Attribute:
Attribute_Label: Horiz_Cont
Attribute_Definition: Original horizontal reference datum
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Unrepresentable_Domain: Original horizontal reference datum
Attribute:
Attribute_Label: Quality
Attribute_Definition: metrics of data quality
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Unrepresentable_Domain:
Mean difference, standard deviation, and percent water depth calculations with adjacent, overlapping datasets.
Attribute:
Attribute_Label: Notes
Attribute_Definition:
Notes on dataset quality. An empty cell means no additional information is noted.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Unrepresentable_Domain:
Notes on dataset quality or reference to survey report on survey webpage.
Attribute:
Attribute_Label: Sources
Attribute_Definition: description of data source including URL
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Unrepresentable_Domain: description of data source including URL
Attribute:
Attribute_Label: Group
Attribute_Definition:
Group, Organization, Agency, Program, or Project that collected the data
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Unrepresentable_Domain:
Group, Organization, Agency, Program, or Project that collected the data
Overview_Description:
Entity_and_Attribute_Overview:
Zip file of bathymetry data sources in polygon shapefile format.
Entity_and_Attribute_Detail_Citation: U.S. Geological Survey
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey - ScienceBase
Contact_Address:
Address_Type: Mailing and Physical
Address: Denver Federal Center, Building 810, Mail Stop 302
City: Denver
State_or_Province: CO
Postal_Code: 80225
Contact_Voice_Telephone: 1-888-275-8747
Contact_Electronic_Mail_Address: sciencebase@usgs.gov
Resource_Description: These data are available in ESRI shapefile format.
Distribution_Liability:
Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Shapefile
Format_Version_Number: ArcGIS Pro (version 3.5.5)
Format_Information_Content:
Downloadable zip file contains a shapefile of multibeam sources.
File_Decompression_Technique: WinZip
Transfer_Size: 0.0619
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: https://doi.org/10.5066/P9C5DBMR
Access_Instructions:
Data can be downloaded using the Network_Resource_Name link and scrolling down to the Sonar Data section.
Fees: None.
Technical_Prerequisites:
The downloadable data file has been compressed with the "zip" command and can be unzipped with Winzip (or other tool) on Windows systems. To utilize these data, the user must have software capable of uncompressing the WinZip file and importing and viewing a shapefile file.
Metadata_Reference_Information:
Metadata_Date: 20260402
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Contact_Person: PCMSC Science Data Coordinator
Contact_Address:
Address_Type: mailing and physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060
Contact_Voice_Telephone: 831-427-4747
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov
Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/DataReleases/CMGDS_DR_tool/DR_P9C5DBMR/SouthernCascadia_bathy_sources_metadatav2.html>
Generated by mp version 2.9.51 on Fri Apr 10 16:37:27 2026