Metadata: Identification_Information: Citation: Citation_Information: Originator: Andrew W. Stevens Originator: Heather M. Weiner Originator: George M. Kaminsky Publication_Date: 20211201 Title: Beach topography of the Columbia River littoral cell, Washington and Oregon, 2021 Geospatial_Data_Presentation_Form: comma-delimited text Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9W15JX8 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/P9W15JX8 Online_Linkage: https://www.sciencebase.gov/catalog/item/613a4e84d34e40dd9c0f4122 Larger_Work_Citation: Citation_Information: Originator: Andrew W. Stevens Originator: Heather M. Weiner Originator: Jeffrey M. Wood Originator: Peter R. Ruggiero Originator: George M. Kaminsky Originator: Guy R. Gelfenbaum Publication_Date: 2019 Title: Beach topography and nearshore bathymetry of the Columbia River littoral cell, Washington and Oregon (ver. 3.0, November 2021) Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9W15JX8 Publication_Information: Publication_Place: Santa Cruz, CA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P9W15JX8 Description: Abstract: This portion of the USGS data release presents topography data collected during surveys performed in the Columbia River littoral cell, Washington and Oregon, in 2021 (USGS Field Activity Number 2021-632-FA). Topographic profiles were collected by walking along survey lines with global navigation satellite system (GNSS) receivers mounted on backpacks. Prior to data collection, vertical distances between the GNSS antennas and the ground were measured using a tape measure. Hand-held data collectors were used to log raw data and display navigational information allowing surveyors to navigate survey lines spaced at 100- to 1000-m intervals along the beach. Profiles were surveyed from the landward edge of the study area (either the base of a bluff, engineering structure, or just landward of the primary dune) over the beach foreshore, to wading depth on the same series of transects as nearshore bathymetric surveys that were conducted during the same time period. Additional topographic data were collected between survey lines in some areas with an all-terrain vehicle (ATV) equipped with a GNSS receiver to constrain the elevations and alongshore extent of major morphological features. Positioning data from the survey platforms were referenced to a GNSS base station with known horizontal and vertical coordinates relative to the North American Datum of 1983. Differential corrections from the GNSS base stations to the survey platforms were either applied in real-time with a VHF radio link, or post-processed using Trimble Business Center software. Orthometric elevations relative to the NAVD88 vertical datum were computed using National Geodetic Survey Geoid12a offsets. The average estimated vertical uncertainty of the topographic measurements is 4 cm. The final point data are provided in comma-separated text format and are projected in Cartesian coordinates using the Washington State Plane South, meters coordinate system. Purpose: Data were obtained to document interannual changes in shoreline position and coastal morphology. These data are intended for science researchers, students, policy makers, and the general public. These data can be used with geographic information systems or other software to identify topographic and shallow-water bathymetric features. Supplemental_Information: Additional information about the field activities from which these data were derived are available online at: https://cmgds.marine.usgs.gov/fan_info.php?fan=2021-632-FA Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20210722 Ending_Date: 20210727 Currentness_Reference: ground condition at time data were collected Status: Progress: Complete Maintenance_and_Update_Frequency: Not planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -124.1886811 East_Bounding_Coordinate: -123.9483169 North_Bounding_Coordinate: 47.1160087 South_Bounding_Coordinate: 46.1165352 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:613a4e84d34e40dd9c0f4122 Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: topography Theme_Keyword: GPS measurement Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: elevation 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: Global Positioning System (GPS) observations Theme: Theme_Keyword_Thesaurus: Global Change Master Directory (GCMD) Theme_Keyword: GPS (Global Positioning System) 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: Pacific Ocean Place_Keyword: Columbia River Place_Keyword: Clatsop County Place_Keyword: Pacific County Place_Keyword: Grays Harbor County Access_Constraints: none 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 originator(s) of the dataset and in products derived from these data. This information is not intended for navigational purposes. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: PCMSC Science Data Coordinator Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Address: Address_Type: mailing and physical Address: 2885 Mission St. City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Native_Data_Set_Environment: MATLAB Version: 9.8.0.1396136 (R2020a) Cross_Reference: Citation_Information: Originator: Richard C. Daniels Originator: Peter Ruggiero Originator: Leonard E. Weber Publication_Date: 1999 Title: Washington Coastal Geodetic Control Network: Report and Station Index Geospatial_Data_Presentation_Form: comma-delimited text Publication_Information: Publication_Place: Olympia, WA Publisher: Washington State Department of Ecology Publication #99-103 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: No formal attribute accuracy tests were conducted. Logical_Consistency_Report: All data falls within expected ranges. 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: Survey-grade positions of the rovers were achieved with global navigation satellite system (GNSS) receivers and a single GNSS base station placed on a benchmark with published horizontal coordinates relative to the North American Datum of 1983 (Daniels and others, 1999). The horizontal positions of the geodetic reference network meet first-order specifications established by the National Geodetic Survey with a horizontal accuracy of 2 cm or better. Differential corrections from the GNSS base stations to the rovers were either applied in real-time with a VHF radio link, or post-processed using Trimble Business Center software. Manufacturer reported accuracy for the differentially corrected horizontal positions for the GNSS rover trajectories is 0.8 cm + 0.5 ppm. Baselines from the GNSS base station varied between 300 m and 12 km with a mean of 3.5 km, suggesting the average horizontal accuracy of rover positions to be about 1 cm. Combining the uncertainty in the benchmark and rover yields a total uncertainty of 3 cm. Uncertainty in the horizontal positions associated with sinking into the substrate or variable posture during data collection of the surveyors is unknown. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: The vertical positions of the geodetic reference network meet 2 cm local ellipsoid height specifications established by the National Geodetic Survey (Daniels and others, 1999). Manufacturer reported accuracy for the differentially corrected vertical positions for the GNSS rover trajectories is 1.5 cm + 1 ppm. Baselines from the GNSS base station varied between 300 m and 12 km with a mean of 3.2 km, suggesting the average vertical accuracy of the survey platforms to be about 1.8 cm relative to the benchmark elevation. Combining the uncertainty in the base station elevation (2 cm) and rover positions yields a total estimated vertical uncertainty of 3.8 cm. Uncertainty in the vertical positions associated with sinking into the substrate or variable posture during data collection of the surveyors is unknown. Lineage: Process_Step: Process_Description: Topographic profiles were collected on foot with GNSS receivers mounted on backpacks. Prior to data collection, vertical distances between the GNSS antennas and the ground were measured using a tape measure. Hand-held data collectors were used to log raw data and display navigational information allowing surveyors to navigate survey lines spaced at 100- to 1,000-m intervals along the beach. Profiles were surveyed from the landward edge of the study area (either the base of a bluff, engineering structure, or just landward of the primary dune) over the beach foreshore, to wading depth on the same series of transects as nearshore bathymetric surveys that were conducted during the same time period. Additional topographic data were collected between survey lines in some areas with an all-terrain vehicle (ATV) to constrain the elevations and alongshore extent of major morphological features. Raw GNSS data were logged at a measured height above the ground as the ATV traversed the beach. Process_Date: 20210727 Process_Step: Process_Description: Positioning data from the survey platforms that were collected in autonomous mode were post-processed to apply differential corrections from a GNSS base station with known horizontal and vertical coordinates relative to the North American Datum of 1983. Post-processing of raw GNSS data was performed with Trimble Business Center. Orthometric elevations relative to the NAVD88 vertical datum were computed using National Geodetic Survey Geoid12a offsets. The final point data from the topographic surveyors are also projected in cartesian coordinates using the Washington State Plane South, meters coordinate system. Process_Date: 20210826 Process_Step: Process_Description: All available topography data from the survey were compiled into a comma-delimited text file for distribution Process_Date: 20210826 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Point Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 284696 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.0000001 Longitude_Resolution: 0.0000001 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: GRS_1980 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257222101 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Altitude_Datum_Name: North American Vertical Datum of 1988 Altitude_Resolution: 0.01 Altitude_Distance_Units: meters Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinates Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Attribute Table Entity_Type_Definition: Table containing attribute information associated with the dataset Entity_Type_Definition_Source: Producer defined Attribute: Attribute_Label: area Attribute_Definition: Designation of sub-area within the Columbia River littoral cell survey area Attribute_Definition_Source: producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Clatsop Enumerated_Domain_Value_Definition: Clatsop sub-area Enumerated_Domain_Value_Definition_Source: producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Long Beach Enumerated_Domain_Value_Definition: Long Beach sub-area Enumerated_Domain_Value_Definition_Source: producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Grayland Enumerated_Domain_Value_Definition: Grayland sub-area Enumerated_Domain_Value_Definition_Source: producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: North Beach Enumerated_Domain_Value_Definition: North Beach sub-area Enumerated_Domain_Value_Definition_Source: producer defined Attribute: Attribute_Label: line_number Attribute_Definition: Numeric code identifying the number of the survey line. Data that were not collected along a survey line are labeled "None". Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 001 Range_Domain_Maximum: 221 Attribute: Attribute_Label: datetime_utc Attribute_Definition: The date and time of data collection in Coordinated Universal Time (UTC). Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2021-Jul-22 12:49:24.000 Range_Domain_Maximum: 2021-Jul-27 18:26:48.000 Attribute_Units_of_Measure: date and time in yyyy-mmm-dd HH:MM:SS.FFF format Attribute: Attribute_Label: longitude Attribute_Definition: Longitude coordinate of data point relative to the North American Datum of 1983 Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -124.1886811 Range_Domain_Maximum: -123.9483169 Attribute_Units_of_Measure: Decimal degrees Attribute: Attribute_Label: latitude Attribute_Definition: Latitude coordinate of data point relative to the North American Datum of 1983 Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 46.1165352 Range_Domain_Maximum: 47.1160087 Attribute_Units_of_Measure: Decimal degrees Attribute: Attribute_Label: easting_m Attribute_Definition: East coordinate of data point relative to the North American Datum of 1983, projected in the Washington State Plane South, meters, coordinate system Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 220036.92 Range_Domain_Maximum: 233558.05 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: northing_m Attribute_Definition: North coordinate of data point relative to the North American Datum of 1983, projected in the Washington State Plane South, meters, coordinate system Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 92894.44 Range_Domain_Maximum: 204679.98 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: distance_m Attribute_Definition: Distance from reference point along planned survey line. Distances are relative to an arbitrary reference point. Depending on the orientation of the target line and position of the reference point, the along-line distance can be positive or negative in any direction. NaN=not a number, because the data were not collected along a pre-defined survey line. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -1187.47 Range_Domain_Maximum: 49.95 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: offline_m Attribute_Definition: Horizontal distance from planned survey line. Depending on the orientation of the target line and position of the reference point, the offline distance can be positive or negative in any direction. NaN=not a number, because the data were not collected along a pre-defined survey line. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -3.00 Range_Domain_Maximum: 3.00 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: ellipsoid_ht_m Attribute_Definition: Height in meters of data point with reference to the reference ellipsoid Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -26.64 Range_Domain_Maximum: -6.75 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: ortho_ht_m Attribute_Definition: Height in meters of data point with reference to the North American Vertical Datum of 1988. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -2.23 Range_Domain_Maximum: 17.14 Attribute_Units_of_Measure: meters Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: U.S. Geological Survey - Science Base Contact_Organization: U.S. Geological Survey 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 Country: USA Contact_Voice_Telephone: 1-888-275-8747 Contact_Electronic_Mail_Address: sciencebase@usgs.gov Resource_Description: Topographic data are available as a comma-delimited text file (crlc21_topo.csv), along with associated FGDC-compliant metadata. 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: comma-delimited text Format_Version_Number: Matlab 9.8.0.1396136 Format_Specification: text Format_Information_Content: comma-delimited text file Transfer_Size: 29.04 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/613a4e84d34e40dd9c0f4122?name=crlc21_topo.csv Network_Resource_Name: https://www.sciencebase.gov/catalog/item/613a4e84d34e40dd9c0f4122 Network_Resource_Name: https://www.sciencebase.gov/catalog/item/613a354cd34e40dd9c0f2233 Network_Resource_Name: https://doi.org/10.5066/P9W15JX8 Access_Instructions: Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to download the topography data. The second link points to a landing page with all topography data and metadata. The third link points to a landing page for the annual survey. The fourth link points to a landing page for the entire data release. Fees: None Metadata_Reference_Information: Metadata_Date: 20211201 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 St. 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