Metadata: Identification_Information: Citation: Citation_Information: Originator: Amy S. Farris Originator: Kathryn M. Weber Publication_Date: 20240410 Title: Beach foreshore slope for the West Coast of the United States Edition: 1 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: data release Issue_Identification: doi:10.5066/P137S83C Publication_Information: Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Online_Linkage: https://doi.org/10.5066/P137S83C Online_Linkage: https://www.sciencebase.gov/catalog/item/65a0296bd34e5af967a3841d Larger_Work_Citation: Citation_Information: Originator: Amy S. Farris Originator: Kathryn M. Weber Publication_Date: 2024 Title: Beach foreshore slope for the West Coast of the United States Edition: 1.0 Geospatial_Data_Presentation_Form: tabular digital data Series_Information: Series_Name: data release Issue_Identification: doi:10.5066/P137S83C Publication_Information: Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Other_Citation_Details: Suggested citation:Farris, A.S., and Weber, K.M., 2024, Beach Foreshore slope for the West Coast of the United States: U.S. Geological Survey data release, https://doi.org/10.5066/P137S83C Online_Linkage: https://doi.org/10.5066/P137S83C Online_Linkage: https://www.sciencebase.gov/catalog/item/659ebf45d34e5af967a34e63 Description: Abstract: This data release contains foreshore slopes for primarily open-ocean sandy beaches along the west coast of the United States (California, Oregon and Washington). The slopes were calculated while extracting shoreline position from lidar point cloud data collected between 2002 and 2011. The shoreline positions have been previously published, but the slopes have not. A reference baseline was defined and then evenly-spaced cross-shore beach transects were created. Then all data points within 1 meter of each transect were associated with each transect. Next, it was determined which points were one the foreshore, and then a linear regression was fit through the foreshore points. Beach slope was defined as the slope of the regression. Finally, the regression was evaluated at the elevation of Mean High Water (MHW) to yield the location of the shoreline. In some areas there was more than one lidar survey available; in these areas the slopes from each survey are provided. While most of the slopes are for sandy beaches, there is some slope data from rocky headlands and other steeper beaches. These data files (slopeData_WestCoast.csv and slopeData_WestCoast.shp) contain beach slope, the location the beach slope data was calculated (the shoreline position), and the estimated uncertainty of the shoreline position. The accompanying data files (referenceLine_WestCoast.csv and referenceLine_WestCoast.shp) contain information about the reference baseline, the cross shore transects, and the MHW values used to estimate the shoreline location. The csv and shapefiles contain the same information, both file types are provided as a convenience to the user. Purpose: Beach slope is a critical metric for coastal hazards science and is also necessary for extracting shorelines from satellite imagery. Shorelines derived from satellite data must be tidally-corrected to a reference elevation using the slope of the beach. The beach slope data presented here will be beneficial for advancing our understanding of coastal processes and for quantifying and predicting shoreline change and storm impacts along the Pacific coast. Supplemental_Information: The shorelines that were derived when these slopes were calculated can be accessed through the USGS National Shoreline Change Data Catalog: https://www.sciencebase.gov/catalog/item/5b97f1b4e4b0702d0e842183 Note that the transect number used in these publications are different that the transect numbers used here. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20020901 Ending_Date: 20110730 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -124.7400 East_Bounding_Coordinate: -117.1200 North_Bounding_Coordinate: 48.3500 South_Bounding_Coordinate: 32.5300 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: environment Theme_Keyword: oceans Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: USGS Theme_Keyword: U.S. Geological Survey Theme_Keyword: Coastal and Marine Hazards and Resources Program Theme_Keyword: Woods Hole Coastal and Marine Science Center Theme_Keyword: WHCMSC Theme_Keyword: beach slope Theme_Keyword: foreshore Theme_Keyword: shoreline Theme_Keyword: Mean High Water Theme_Keyword: MHW Theme: Theme_Keyword_Thesaurus: USGS thesaurus Theme_Keyword: coastal processes Theme_Keyword: geospatial datasets Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:65a0296bd34e5af967a3841d Place: Place_Keyword_Thesaurus: None Place_Keyword: United States Place_Keyword: Pacific Coast Place_Keyword: California Place_Keyword: Washington Place_Keyword: Oregon Access_Constraints: None. Use_Constraints: Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the originator of the dataset. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Amy Farris Contact_Organization: U.S. Geological Survey Contact_Position: Oceanographer Contact_Address: Address_Type: mailing and physical Address: 384 Woods Hole Road City: Woods Hole Road State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 x2344 Contact_Facsimile_Telephone: 508-547-2310 Contact_Electronic_Mail_Address: afarris@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: https://www.sciencebase.gov/catalog/file/get/65a0296bd34e5af967a3841d?name=slope_BrowseGraphic.png Browse_Graphic_File_Description: Small section of data showing refrence baseline and slope data Browse_Graphic_File_Type: PNG Native_Data_Set_Environment: Windows 10, Matlab version 2019b and 2023a. Cross_Reference: Citation_Information: Originator: Amy S. Farris Originator: Kathryn M. Weber Originator: Kara S. Doran Originator: Jeffrey H. List Publication_Date: 2018 Title: Comparing methods used by the U.S. Geological Survey Coastal and Marine Geology Program for deriving shoreline position from lidar data Series_Information: Series_Name: Open-File Report Issue_Identification: 2018-1121 Publication_Information: Publication_Place: Reston, VA Publisher: US Geological Survey Online_Linkage: https://doi.org/10.3133/ofr20181121 Cross_Reference: Citation_Information: Originator: Kathryn M. Weber Originator: Jeffrey H. List Originator: Karen L.M. Morgan Publication_Date: 2005 Title: An operational mean high water datum for determination of shoreline position from topographic lidar data Geospatial_Data_Presentation_Form: Open-File Report Series_Information: Series_Name: Open-File Report Issue_Identification: 2005-1027 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.3133/ofr20051027 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The data provided here consist of estimates of the foreshore slopes of primarily sandy beaches along the U.S. Pacific coastline. The beach slopes were calculated using 6 different lidar surveys conducted from 2002 to 2011. The accuracy of the lidar point cloud elevation data from these surveys varies, with the oldest surveys being the least accurate. There are several factors that affect the accuracy of the beach slopes. These vary by survey and include: the accuracy of the lidar data, the scatter in the lidar data, the density of lidar data on the foreshore, the width of the foreshore, and the slope of the foreshore. In addition, this methodology assumes that the slope of the foreshore is constant along the transect from the water to the berm. While this assumption is usually valid, we do not know how valid it is at any individual transect. The best way to assess the accuracy of a given slope value is to compare it to adjacent values in both space and time. Logical_Consistency_Report: Beach slopes were automatically calculated for each transect during the shoreline extraction process. If no shoreline point was found on a transect or the shoreline point did not pass QA/QC procedures, that transect will not have a value for slope. There was more than one lidar survey available for many transects. Shorelines and slopes were calculated for each lidar survey. The beach slopes vary due to both measurement error and natural variability of the system. Completeness_Report: Beach slopes were calculated primarily on open-ocean, sandy beaches. Some slopes on non-sandy beaches and rocky headlands are included. There are some large gaps in the slope data. These are due to gaps in the lidar data. Additional small gaps were created when data that didn’t pass our QA/QC procedures were removed. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Since the data are beach slope, there is no horizontal component of accuracy. There is horizontal accuracy associated with each lidar dataset from which these data were estimated. This accuracy varies by data set, see lidar metadata. The foreshore beach slope values are provided at our estimate of shoreline position. Our estimated horizontal accuracy of shoreline position is provided with the data, see the attribute "ShoreUncy". See process step for details about how this value was calculated. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Since the data are beach slope, there is no vertical component of accuracy. There is vertical accuracy associated with each lidar dataset from which these data were estimated. This accuracy varies by data set, see lidar metadata. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: NOAA Office for Coastal Management (NOAA/OCM) Publication_Date: 20150313 Title: 2009 USACE NCMP Topobathy Lidar: California Geospatial_Data_Presentation_Form: tabular digital data Publication_Information: Publication_Place: Charleston, SC Publisher: NOAA Office for Coastal Management (NOAA/OCM) Online_Linkage: https://www.fisheries.noaa.gov/inport/item/50074 Online_Linkage: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=4810 Online_Linkage: https://coast.noaa.gov/dataviewer Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20091003 Ending_Date: 20091206 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: 2009 California Source_Contribution: The bare-earth lidar point cloud data in LAS format were used to calculate beach slope using methods described in the process steps. The point data were downloaded using the cart feature in the appropriate UTM Zone projection with NAD83 horizontal datum and NAVD88 vertical datum (meters). Source_Information: Source_Citation: Citation_Information: Originator: NOAA Office for Coastal Management (NOAA/OCM) Publication_Date: 20150313 Title: 2010 USACE NCMP Topobathy Lidar: California Geospatial_Data_Presentation_Form: tabular digital data Publication_Information: Publication_Place: Charleston, SC Publisher: NOAA Office for Coastal Management (NOAA/OCM) Online_Linkage: https://www.fisheries.noaa.gov/inport/item/49641 Online_Linkage: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=4825 Online_Linkage: https://coast.noaa.gov/dataviewer Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20100529 Ending_Date: 20100821 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: 2010 California Source_Contribution: The bare-earth lidar point cloud data in LAS format were used to calculate beach slope using methods described in the process steps. The point data were downloaded using the cart feature in the appropriate UTM Zone projection with NAD83 horizontal datum and NAVD88 vertical datum (meters). Source_Information: Source_Citation: Citation_Information: Originator: NOAA Office for Coastal Management (NOAA/OCM) Publication_Date: 20150414 Title: 2011 USACE NCMP Topobathy Lidar: California Geospatial_Data_Presentation_Form: tabular digital data Publication_Information: Publication_Place: Charleston, SC Publisher: NOAA Office for Coastal Management (NOAA/OCM) Online_Linkage: https://www.fisheries.noaa.gov/inport/item/49644 Online_Linkage: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=4826 Online_Linkage: https://coast.noaa.gov/dataviewer Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20110519 Ending_Date: 20110803 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: 2011 California Source_Contribution: The bare-earth lidar point cloud data in LAS format were used to calculate beach slope using methods described in the process steps. The point data were downloaded using the cart feature in the appropriate UTM Zone projection with NAD83 horizontal datum and NAVD88 vertical datum (meters). Source_Information: Source_Citation: Citation_Information: Originator: NOAA Office for Coastal Management (NOAA/OCM) Publication_Date: 20100101 Title: 2010 USACE NCMP Topobathy Lidar: Oregon and Washington Geospatial_Data_Presentation_Form: tabular digital data Publication_Information: Publication_Place: Charleston, SC Publisher: NOAA Office for Coastal Management (NOAA/OCM) Online_Linkage: https://www.fisheries.noaa.gov/inport/item/55082 Online_Linkage: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8607 Online_Linkage: https://coast.noaa.gov/dataviewer Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20100724 Ending_Date: 20101007 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: 2010 OR and WA Source_Contribution: The bare-earth lidar point cloud data in LAS format were used to calculate beach slope using methods described in the process steps. The point data were downloaded using the cart feature in the appropriate UTM Zone projection with NAD83 horizontal datum and NAVD88 vertical datum (meters). Source_Information: Source_Citation: Citation_Information: Originator: NOAA Office for Coastal Management (NOAA/OCM) Publication_Date: 20110401 Title: 2009 Oregon Department of Geology and Mineral Industries (DOGAMI) Oregon Lidar: North Coast Geospatial_Data_Presentation_Form: tabular digital data Publication_Information: Publication_Place: Charleston, SC Publisher: NOAA Office for Coastal Management (NOAA/OCM) Online_Linkage: https://www.fisheries.noaa.gov/inport/item/49906 Online_Linkage: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=575 Online_Linkage: https://coast.noaa.gov/dataviewer Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20081023 Ending_Date: 20090809 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: 2009 OR Source_Contribution: The bare-earth lidar point cloud data in LAS format were used to calculate beach slope using methods described in the process steps. The point data were downloaded using the cart feature in the appropriate UTM Zone projection with NAD83 horizontal datum and NAVD88 vertical datum (meters). Source_Information: Source_Citation: Citation_Information: Originator: NOAA Office for Coastal Management (NOAA/OCM) Publication_Date: 20160523 Title: 2002 NASA/USGS Airborne LiDAR Assessment of Coastal Erosion (ALACE) Project for California, Oregon, and Washington Coastlines Geospatial_Data_Presentation_Form: tabular digital data Publication_Information: Publication_Place: Charleston, SC Publisher: NOAA Office for Coastal Management (NOAA/OCM) Online_Linkage: https://www.fisheries.noaa.gov/inport/item/49634 Online_Linkage: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=14 Online_Linkage: https://coast.noaa.gov/dataviewer Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20020918 Ending_Date: 20021003 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: 2002 OR and WA Source_Contribution: The bare-earth lidar point cloud data in LAS format were used to calculate beach slope using methods described in the process steps. The point data were downloaded using the cart feature in the appropriate UTM Zone projection with NAD83 horizontal datum and NAVD88 vertical datum (meters). Process_Step: Process_Description: A transect-based method described in Farris and others (2018) was used to estimate the slope of the foreshore of the beach using Matlab (version 2019b). This method utilized 20 meter spaced transects oriented perpendicular to a coast-following reference line. All lidar data points within 1 meter of each transect were associated with that transect. All processing was done on the 2 meter wide transects, working on a single transect at a time. For each transect, points on the foreshore were identified and a linear regression was fit through them. Foreshore beach slope was defined as the slope of the regression line. The regression was evaluated at the elevation of Mean High Water (MHW) to yield the location of the shoreline. The height of Mean High Water was determined from Weber and others (2005). The shoreline position on each transect has an estimated uncertainty associated with it. This uncertainty includes four components: 1) the 95% confidence interval on the linear regression estimate of the shoreline position; 2) the vertical error of the raw lidar data as reported in the lidar data’s metadata; 3) a 15 cm vertical error in our chosen value of MHW, and; 4) the uncertainty due to extrapolation (if the shoreline was determined using extrapolation). These four components of uncertainty were added in quadrature to yield a total error for each shoreline point. The accompanying data files (referenceLine_WestCoast.csv and referenceLine_WestCoast.shp) contain information about the reference baseline, transects and the MHW values used to estimate the shoreline location. This step was completed by several people: Dave Reid, Kathryn M. Weber and Amy S. Farris. Farris, A.S., Weber, K.M., Doran, K.S., and List, J.H., 2018, Comparing methods used by the U.S. Geological Survey Coastal and Marine Geology Program for deriving shoreline position from lidar data: U.S. Geological Survey Open-File Report 2018–1121, 13 p., https://doi.org/10.3133/ofr20181121 Source_Used_Citation_Abbreviation: 2009 California Source_Used_Citation_Abbreviation: 2010 California Source_Used_Citation_Abbreviation: 2011 California Source_Used_Citation_Abbreviation: 2010 OR and WA Source_Used_Citation_Abbreviation: 2009 OR Source_Used_Citation_Abbreviation: 2002 OR and WA Process_Date: 20190125 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Amy S. Farris Contact_Organization: U.S. Geological Survey Contact_Position: Oceanographer Contact_Address: Address_Type: mailing and physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543 Country: USA Contact_Voice_Telephone: 508-548-8700 x2344 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: afarris@usgs.gov Process_Step: Process_Description: The slope data for all surveys for all states were merged into a single data matrix in Matlab (ver 2023a). For each transect in each survey the following data were preserved and added as a row to the matrix of all of the data: transect number, state, region, year and month of survey, latitude and longitude of shoreline position, beach slope, distance from shoreline to transect origin, and shoreline uncertainty. A csv file of this matrix was written. A shapefile was also created. This step was completed by Amy S. Farris. Process_Date: 20230605 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Point Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.0197394080 Longitude_Resolution: 0.0264580536 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: WGS_1984 Ellipsoid_Name: WGS_84 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257223563 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: slopeData_WestCoast.csv and slopeData_WestCoast.shp Entity_Type_Definition: The point shapefile file includes foreshore beach slopes for the sandy beaches of California, Oregon and Washington. A .csv file containing the same fields (except for "FID" and "Shape") is also included. Point object count: 98,232. Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: FID Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: State Attribute_Definition: Two letter state designation Attribute_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: CA Enumerated_Domain_Value_Definition: California Enumerated_Domain_Value_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: OR Enumerated_Domain_Value_Definition: Oregon Enumerated_Domain_Value_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: WA Enumerated_Domain_Value_Definition: Washington Enumerated_Domain_Value_Definition_Source: USGS Attribute: Attribute_Label: Region Attribute_Definition: Two letter region designation. Oregon and Washington don't have regions. Attribute_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: so Enumerated_Domain_Value_Definition: Southern California Enumerated_Domain_Value_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: ce Enumerated_Domain_Value_Definition: Central California Enumerated_Domain_Value_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: no Enumerated_Domain_Value_Definition: Northern California Enumerated_Domain_Value_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: na Enumerated_Domain_Value_Definition: no regions for this state Enumerated_Domain_Value_Definition_Source: USGS Attribute: Attribute_Label: Year Attribute_Definition: Year of data collection, as YYYY Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2002 Range_Domain_Maximum: 2011 Attribute_Units_of_Measure: years Attribute: Attribute_Label: Month Attribute_Definition: Approximate month of data collection; as MM. Occasionally, some lidar surveys extended over multiple months. In these cases the month with the most data was listed. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 5 Range_Domain_Maximum: 10 Attribute_Units_of_Measure: number of month Attribute: Attribute_Label: TransNum Attribute_Definition: Transect number. Transect numbers are unique for each state, or if the state is divided into regions, for each region. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 79665 Attribute: Attribute_Label: Latitude Attribute_Definition: Latitude of calculated shoreline position. This is the location at which beach slope was estimated. WGS84 Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 32.5345696845241 Range_Domain_Maximum: 48.3425714475071 Attribute_Units_of_Measure: decimal degrees Attribute: Attribute_Label: Longitude Attribute_Definition: Longitude of calculated shoreline position. This is the location at which beach slope was estimated. Negative indicates west longitude. WGS84 Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -124.731893662584 Range_Domain_Maximum: -117.124253831717 Attribute_Units_of_Measure: decimal degrees Attribute: Attribute_Label: Slope Attribute_Definition: Slope of the beach foreshore Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.247 Range_Domain_Maximum: 33.809 Attribute_Units_of_Measure: degrees Attribute: Attribute_Label: ShoreDist Attribute_Definition: Distance between the calculated shoreline position and transect origin (at the reference baseline). Positive values are seaward of the baseline, negative values are landward of the baseline. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -1437.0327 Range_Domain_Maximum: 715.671 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: ShoreUncy Attribute_Definition: Estimated uncertainty of the shoreline position. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.279 Range_Domain_Maximum: 41.520 Attribute_Units_of_Measure: meters Overview_Description: Entity_and_Attribute_Overview: This section describes the tabular data associated with the shapefile and the corresponding csv file “slopeData_WestCoast (.shp/.csv)”. The tabular .csv data does not have the attributes "FID" or "Shape". The shapefile is projected in GCS_WGS_1984. Entity_and_Attribute_Detail_Citation: U.S. Geological Survey - ScienceBase Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey - ScienceBase Contact_Address: Address_Type: mailing address Address: Denver Federal Center, Building 810, Mail Stop 302 City: Denver State_or_Province: CO Postal_Code: 80225 Country: United States Contact_Voice_Telephone: 1-888-275-8747 Contact_Electronic_Mail_Address: sciencebase@usgs.gov Resource_Description: The dataset contains the point shapefile and the tabular data for the foreshore beach slope, (slopeData_WestCoast.shp and slopeData_WestCoast.csv), browse graphic (slope_BrowseGraphic.png), and the FGDC CSDGM metadata in XML 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 for other purposes, nor on all computer systems, 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 10.7.1 Format_Specification: Esri polyline shapefile Format_Information_Content: Dataset contains the shapefile (and its components), .csv file, browse graphic, and CSDGM metadata. Transfer_Size: 11 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/65a0296bd34e5af967a3841d Network_Resource_Name: https://www.sciencebase.gov/catalog/item/65a0296bd34e5af967a3841d Network_Resource_Name: https://doi.org/10.5066/P137S83C Access_Instructions: The first link downloads all the files on the dataset landing page. The second link is to the dataset landing page where individual files can be viewed and downloaded. The third link is to the data release main landing page. Digital_Form: Digital_Transfer_Information: Format_Name: ascii csv file Format_Version_Number: ArcGIS 10.7.1 Format_Specification: Esri polyline shapefile Format_Information_Content: Dataset contains the shapefile (and its components), .csv file, browse graphic, and CSDGM metadata. Transfer_Size: 11 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/65a0296bd34e5af967a3841d Network_Resource_Name: https://www.sciencebase.gov/catalog/item/65a0296bd34e5af967a3841d Network_Resource_Name: https://doi.org/10.5066/P137S83C Access_Instructions: The first link downloads all the files on the dataset landing page. The second link is to the dataset landing page where individual files can be viewed and downloaded. The third link is to the data release main landing page. Fees: None Technical_Prerequisites: These data are available in a point shapefile format. The user must have software to read and process the data components of a shapefile. Metadata_Reference_Information: Metadata_Date: 20240410 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Amy S. Farris Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing and physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 Contact_Facsimile_Telephone: 508-548-8700 x2306 Contact_Electronic_Mail_Address: whsc_data_contact@usgs.gov Contact_Instructions: The metadata contact email address is a generic address in the event the person is no longer with USGS. Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998