Metadata: Identification_Information: Citation: Citation_Information: Originator: Gibbs, Ann E. Originator: Ohman, Karin A. Originator: Coppersmith, Ryan Originator: Richmond, Bruce M. Publication_Date: 20240911 Title: Digital Shoreline Analysis System (DSAS) version 5.1 transects with long-term linear regression rate calculations for the sheltered eastern Beaufort Sea coast of Alaska from the U.S. Canadian Border to the Hulahula River Geospatial_Data_Presentation_Form: vector digital data (polyline) Series_Information: Series_Name: data release Issue_Identification: 10.5066/F72Z13N1 Publication_Information: Publication_Place: U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: https://doi.org/10.5066/F72Z13N1 Online_Linkage: https://www.sciencebase.gov/catalog/item/663a56c4d34e77890839b06b Larger_Work_Citation: Citation_Information: Originator: Gibbs, Ann E. Originator: Ohman, Karin A. Originator: Coppersmith, Ryan Originator: Richmond, Bruce M. Publication_Date: 2017 Title: National Assessment of Shoreline Change: A GIS compilation of Updated Vector Shorelines and Associated Shoreline Change Data for the North Coast of Alaska, U.S. Canadian Border to Icy Cape (ver. 2.0, September 2024) Edition: 2.0 Series_Information: Series_Name: data release Issue_Identification: 10.5066/F72Z13N1 Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA Publisher: U.S. Geological Survey Other_Citation_Details: Suggested Citation: Gibbs, A.E., Ohman, K.A., Coppersmith, R., and Richmond, B.M., 2017, National Assessment of Shoreline Change: A GIS compilation of updated vector shorelines and associated shoreline change data for the north coast of Alaska, U.S. Canadian border to Icy Cape (ver. 2.0, September 2024): U.S. Geological Survey data release, https://doi.org/10.5066/F72Z13N1. Online_Linkage: https://doi.org/10.5066/F72Z13N1 Description: Abstract: This dataset consists of long-term (70 years) shoreline change rates for the mainland coast of Alaska sheltered by barrier islands from the U.S. Canadian Border to the Hulahula River. Rate calculations were computed within a GIS using the Digital Shoreline Analysis System (DSAS) version 5.1, an ArcGIS extension developed by the U.S. Geological Survey. Long-term rates of shoreline change were calculated using a linear regression rate-of-change method based on available shoreline data between 1947 and 2017. A reference baseline was used as the originating point for the orthogonal transects cast by the DSAS software. The transects intersect each shoreline establishing measurement points, which are then used to calculate long-term rates. Purpose: Coastal erosion is a persistent process along most open-ocean shores of the United States and affects both developed and natural coastlines. Along the Arctic coast of Alaska, coastal erosion is widespread and threatens communities, defense and energy-related infrastructure, and coastal habitat. As the coast changes, there are a wide range of ways that change can affect coastal communities, habitats, and the physical characteristics of the coast-including beach erosion, shoreline retreat, land loss, and damage to infrastructure. The U.S. Geological Survey (USGS) is responsible for conducting research on coastal change hazards, understanding the processes that cause coastal change, and developing models to forecast future change. To understand and adapt to shoreline change, accurate information regarding the past and present configurations of the shoreline is essential and a comprehensive, nationally consistent analysis of shoreline movement is needed. To meet this national need, the USGS is conducting an analysis of historical shoreline changes along open-ocean coasts of the United States and parts of the Great Lakes. In Alaska, coastlines sheltered from open-ocean wave conditions by barrier islands are also included in the analysis because of their importance to defense and energy-related infrastructure and to understand the similarities, differences, and linkages in coastal behavior and physical processes acting on exposed and sheltered permafrost coastlines. This dataset is one in a series of regionally focused reports on historical shoreline change. As more data are gathered, periodic updates are made, which provide information that can be used in multidisciplinary assessments of global change impacts. Supplemental_Information: 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: 1947 Ending_Date: 2017 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -143.990143 East_Bounding_Coordinate: -141.201885 North_Bounding_Coordinate: 70.138283 South_Bounding_Coordinate: 69.627939 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: oceans Theme_Keyword: environment Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: Data Categories for Marine Planning Theme_Keyword: Distributions Theme_Keyword: Physical/Chemical Features Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: coastal processes Theme_Keyword: geospatial datasets Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords Theme_Keyword: shoreline accretion Theme_Keyword: shoreline erosion 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 Theme_Keyword: Shoreline Theme_Keyword: Shoreline change Theme_Keyword: Digital Shoreline Analysis System Theme_Keyword: DSAS Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:663a56c4d34e77890839b06b Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: State of Alaska Place_Keyword: North Slope Place_Keyword: Beaufort Sea Place_Keyword: Demarcation Bay Place_Keyword: Jago River Place_Keyword: Barter Island Place_Keyword: Kaktovik Place_Keyword: Okpilak River Place_Keyword: Hulahula River Place: Place_Keyword_Thesaurus: None Place_Keyword: Arctic National Wildlife Refuge Place_Keyword: United States of America Place_Keyword: Arctic Place_Keyword: ANWR 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 originator(s) of the dataset and in products derived from these data. 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 Data_Set_Credit: U.S. Geological Survey Native_Data_Set_Environment: Generated as a feature class contained in a Personal Geodatabase by DSAS in ArcGIS. Cross_Reference: Citation_Information: Originator: Gibbs, A.E. Originator: Richmond B.M. Publication_Date: 2017 Title: National Assessment of Shoreline Change: Summary Statistics for Updated Vector Shorelines and Associated Shoreline Change Data for the North Coast of Alaska, U.S.--Canadian Border to Icy Cape Other_Citation_Details: Gibbs, A.E., and Richmond, B.M., 2017, National Assessment of Shoreline Change: Summary Statistics for Updated Vector Shorelines and Associated Shoreline Change Data for the North Coast of Alaska, U.S.--Canadian Border to Icy Cape: U.S. Geological Survey Open-File Report 2017�1107, 21 p. Online_Linkage: https://doi.org/10.3133/ofr20171107 Cross_Reference: Citation_Information: Originator: Ann E. Gibbs Originator: Bruce M. Richmond Publication_Date: 2015 Title: National Assessment of Shoreline Change--Historical Shoreline Change along the North Coast of Alaska, U.S.--Canadian Border to Icy Cape Other_Citation_Details: Gibbs, A.E., and Richmond, B.M., 2015, National assessment of shoreline change�Historical shoreline change along the north coast of Alaska, U.S.�Canadian border to Icy Cape: U.S. Geological Survey Open-File Report 2015�1048, 96 p. Online_Linkage: https://doi.org/10.3133/ofr20151048 Cross_Reference: Citation_Information: Originator: Emily A. Himmelstoss Originator: Rachel E. Henderson Originator: Meredith G. Kratzmann Originator: Amy S. Farris Publication_Date: 2021 Title: Digital Shoreline Analysis System (version 5.1) User Guide Other_Citation_Details: Himmelstoss, E.A., Henderson, R.E., Kratzmann, M.G., and Farris, A.S., 2021, Digital Shoreline Analysis System (version 5.1) User Guide: U.S. Geological Survey Open-File Report 2021-1091. Online_Linkage: https://doi.org/10.3133/ofr20211091 Online_Linkage: https://pubs.er.usgs.gov/publication/ofr20211091 Online_Linkage: https://www.usgs.gov/centers/whcmsc/science/digital-shoreline-analysis-system-dsas Cross_Reference: Citation_Information: Originator: Emily A. Himmelstoss Originator: Amy S. Farris Originator: Rachel E. Henderson Originator: Meredith G. Kratzmann Originator: Ayhan Ergul Originator: Ouya Zhang Originator: Jessica L. Zichichi Originator: E. Robert Thieler Publication_Date: 2018 Title: Digital Shoreline Analysis System (version 5.1): U.S. Geological Survey Software Other_Citation_Details: Current software at time of use was 5.1. The second link directs to the DSAS project page. Online_Linkage: https://code.usgs.gov/cch/dsas/-/tree/v5.1?ref_type=tags Online_Linkage: https://www.usgs.gov/centers/whcmsc/science/digital-shoreline-analysis-system-dsas Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The attributes of this dataset are based on the field requirements of the Digital Shoreline Analysis System and were automatically generated by the software during the generation of the transect layer or during the calculation of shoreline change rates performed by the software. ShoreType and CalcEras attributes were added after rate calculations. The data have been quality checked. Logical_Consistency_Report: These data were generated using DSAS v. 5.1, an automated software program which does not perform checks for fidelity of the input features. The transects were visually inspected and sometimes manually adjusted within a standard ArcMap edit session to adjust the position at which an individual transect intersected the shorelines. The data have been quality checked. Completeness_Report: This dataset contains the transects automatically generated by the DSAS software application that were used to calculate shoreline change rates along sections of the north coast of Alaska, from the U.S.-Canadian border to the Hulahula River, where shoreline position data were available. Additional transects may have been generated but did not intersect the shoreline dates specified. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The transect serves as a reference point along which measurements are calculated by the Digital Shoreline Analysis System (DSAS) software. It does not correspond to any real-world feature. The uncertainty of the linear regression rate included with the transect file is estimated by the elements LR2, LSE and LCI90. See the attribute definition of each for more information. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 2024 Title: Midshore baseline for the sheltered eastern Beaufort Sea coast of Alaska (U.S. Canadian Border to the Hulahula River) generated to calculate shoreline change rates Geospatial_Data_Presentation_Form: shapefile Publication_Information: Publication_Place: online Publisher: U.S. Geological Survey Online_Linkage: https://www.sciencebase.gov/catalog/file/get/663a59b9d34e77890839b077 Type_of_Source_Media: Digital Resources Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2024 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: DSAS baseline Source_Contribution: DSAS baseline, from this same data release, used for calculation of shoreline change rates. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 2024 Title: Shorelines from 1947 to 2017 for the East Beaufort Sea coast of Alaska (U.S. Canadian Border to the Hulahula River) used in shoreline change analysis Geospatial_Data_Presentation_Form: shapefile Publication_Information: Publication_Place: online Publisher: U.S. Geological Survey Online_Linkage: https://www.sciencebase.gov/catalog/file/get/663a5a13d34e77890839b079 Type_of_Source_Media: Digital Resources Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1947 Ending_Date: 2017 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: DSAS shoreline Source_Contribution: DSAS shoreline file, from this same data release, used for calculation of shoreline change rates. Process_Step: Process_Description: Transect features were generated using DSAS v5.1 in ArcMap v10.8.1. Parameters Used: Baseline Layer= EastBeaufort_sheltered_baseline, Baseline ID Filed=ID, baseline placement=midshore, Baseline Orientation=Land is to the LEFT, Search Distance From Baseline=variable, Transect Spacing=50 meters, Smoothing Distance=500 meters. For additional details on these parameters, please see the DSAS help file distributed with the DSAS software, or visit the USGS website at: https://www.usgs.gov/centers/whcmsc/science/digital-shoreline-analysis-system-dsas. Source_Used_Citation_Abbreviation: DSAS baseline Process_Date: 2023 Process_Step: Process_Description: Some transects were manually edited in ArcMap v10.8.1 to ensure they intersected all shorelines and were as close to perpendicular as possible. Process_Date: 2023 Process_Step: Process_Description: Rate calculations performed using DSAS v5.1 in ArcMap v10.8.1 on selected shoreline features. Parameters Used: Shoreline Layer= EastBeaufort_Shorelines, Shoreline Date Field=DATE_, Shoreline Uncertainty Field=Uncy, Default Data Accuracy=0 meters, Intersection Parameters=Seaward Intersection, Statistics to Calculate =[Shoreline Change Envelope (SCE)], [Net Shoreline Movement (NSM)],[Linear Regression Rate (LRR)], Confidence Interval=90 percent. For short-term rate calculations as subset of years (1979-2017) was selected. Source_Used_Citation_Abbreviation: DSAS shoreline Process_Date: 2023 Process_Step: Process_Description: The exported transect shapefile was projected in Esri's ArcToolbox (v10.8.1) > Data Management Tools > Projections and Transformations > Feature > Project. Parameters: input projection � NAD_1983_2011_Alaska_Albers; output projection - geographic coordinates (WGS84); transformation = WGS_1984_(ITRF00)_To_NAD_1983. Process_Date: 2024 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: String Point_and_Vector_Object_Count: 2915 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: WGS_1984 Ellipsoid_Name: WGS 84 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257224 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Attribute Table Entity_Type_Definition: Table containing attribute information associated with the data set. Entity_Type_Definition_Source: U.S. Geological Survey 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 feature Attribute: Attribute_Label: TransectID Attribute_Definition: A permanent and unique identification number for each transect in the output rates table calculated by DSAS. Attribute_Definition_Source: Himmelstoss and others (2021) Attribute_Domain_Values: Unrepresentable_Domain: Multiple unique numbers Attribute: Attribute_Label: BaselineID Attribute_Definition: Values in this field correlate to the baseline attribute field �ID� and are assigned by DSAS to identify the baseline segment used to generate the measurement transect. Attribute_Definition_Source: Himmelstoss and others (2021) Attribute_Domain_Values: Unrepresentable_Domain: Multiple unique numbers Attribute: Attribute_Label: GroupID Attribute_Definition: Values in this field correlate to the optional baseline attribute field �DSAS_group� (Group_) and are assigned by DSAS if selected by user. This field is used to aggregate sections of the coast into groups. Here they represent coastal sub-region ID as defined in Gibbs and Richmond (2017). Attribute_Definition_Source: Himmelstoss and others (2021) and Gibbs and Richmond (2017) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1 Enumerated_Domain_Value_Definition: U.S. Canadian border to the Hulahula River Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: TransOrder Attribute_Definition: Assigned by DSAS based on ordering of transects along the baseline. Used to allow user to sort transect data along the baseline from baseline start to baseline end. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 3086 Attribute: Attribute_Label: Azimuth Attribute_Definition: Used to record the azimuth of the transect measured in degrees clockwise from north. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.36 Range_Domain_Maximum: 358.28 Attribute: Attribute_Label: ShrCount Attribute_Definition: The total number of shorelines intersected by the transect and used for change analysis. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3 Range_Domain_Maximum: 5 Attribute: Attribute_Label: TCD Attribute_Definition: Total cumulative distance in meters from start of baseline to transect location. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 216848.2 Attribute: Attribute_Label: SHAPE_Leng Attribute_Definition: Length of transect in meter units. This field is automatically generated and maintained when data are within a geodatabase. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: unlimited Attribute: Attribute_Label: SCE Attribute_Definition: The shoreline change envelope (SCE) reports a distance, not a rate. The SCE is the distance between the shoreline farthest from and closest to the baseline at each transect. This represents the total change in shoreline movement for all available shoreline positions and is not related to their dates. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2.78 Range_Domain_Maximum: 290.07 Attribute_Units_of_Measure: Meters Attribute: Attribute_Label: NSM Attribute_Definition: The net shoreline movement (NSM) reports the distance between the oldest and youngest shorelines for each transect. This represents the total distance between the oldest and youngest shorelines. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -280.41 Range_Domain_Maximum: 158.41 Attribute_Units_of_Measure: Meters Attribute: Attribute_Label: LRR Attribute_Definition: A linear regression rate-of-change statistic was calculated by fitting a least-squares regression line to all shoreline points for a particular transect. The best-fit regression line is placed so that the sum of the squared residuals (determined by squaring the offset distance of each data point from the regression line and adding the squared residuals together) is minimized. The linear regression rate is the slope of the line. The rate is reported in meters per year with positive values indicating accretion (shoreline advance) and negative values indicating erosion (shoreline retreat). Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -7.9 Range_Domain_Maximum: 3.66 Attribute: Attribute_Label: LR2 Attribute_Definition: The R-squared statistic, or coefficient of determination, is the percentage of variance in the data that is explained by a regression. It is a dimensionless index that ranges from 1.0 to 0.0 and measures how successfully the best-fit line accounts for variation in the data. The smaller the variability of the residual values around the regression line relative to the overall variability, the better the prediction (and closer the R-squared value is to 1.0). Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 1 Attribute: Attribute_Label: LSE Attribute_Definition: This quantity is the standard error of the regression, also known as the standard error of the estimate. To calculate it, the distance between each data point and the regression line is calculated. These distances are squared then summed. The sum is divided by the number of data point minus two. The square root is taken of the result. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.01 Range_Domain_Maximum: 142.21 Attribute: Attribute_Label: LCI90 Attribute_Definition: The standard error of the slope with confidence interval describes the uncertainty of the reported rate. The LRR rates are determined by a best-fit regression line for the shoreline data at each transect. The slope of this line is the reported rate of change (in meters/year). The confidence interval (LCI) is calculated by multiplying the standard error (also called the standard deviation) of the slope by the two-tailed test statistic at the user-specified 90 percent confidence. This value is often reported in conjunction with the slope to describe the confidence of the reported rate. For example: LRR = 1.2 LCI90 = 0.7 could be reported as a rate of 1.2 (+/-) 0.7 meters/year. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 20.66 Attribute: Attribute_Label: ShoreType Attribute_Definition: User defined shoreline type Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sheltered Mainland Enumerated_Domain_Value_Definition: A large, continuous extent of land that does not include offshore islands or other detached territories and is sheltered from direct wave energy by offshore islands. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sheltered Barrier Spit Enumerated_Domain_Value_Definition: Deposits of sediment extending from the mainland into a body of water and sheltered from direct wave energy by offshore islands. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sheltered Barrier Island Enumerated_Domain_Value_Definition: Deposits of sediment that are detached from the coast, run parallel to the coastline, and are sheltered from direct wave energy by offshore islands. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sheltered Barrier Beach Enumerated_Domain_Value_Definition: Deposits of sediment that run parallel to the coastline, are attached to the mainland at both ends, front a body of water, and are sheltered from direct wave energy by offshore islands. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sheltered Island Enumerated_Domain_Value_Definition: Portions of offshore islands sheltered from direct wave energy. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: CalcEras Attribute_Definition: Decade or era of shorelines that were used to calculate shoreline change rates. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: Multiple unique values listing the decades or eras of shorelines Overview_Description: Entity_and_Attribute_Overview: The entity and attribute information provided here describes the tabular data associated with the data set. Please review the detailed descriptions that are provided (the individual attribute descriptions) for information on the values that appear as fields/table entries of the data set. Entity_and_Attribute_Detail_Citation: U.S. Geological Survey Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey - Science Base Contact_Address: Address_Type: mailing and physical address Address: Denver Federal Center, Building 810, Mail Stop 302 City: Denver State_or_Province: CO Postal_Code: 80225 Country: CA Contact_Voice_Telephone: 888-275-8747 Contact_Electronic_Mail_Address: sciencebase@usgs.gov Resource_Description: These data are available in shapefile format contained in a single zip file, which also includes CSDGM 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: Shapefile Format_Version_Number: ArcGIS Desktop 10.8.1 Format_Specification: Esri polyline shapefile Format_Information_Content: These files (.cpg, .dbf, .prj, .sbn, .sbx, .shp, and .shx) are a collection of files with a common filename prefix and must be downloaded and stored in the same directory. Together they are the components of the shapefile and include FGDC CSDGM-compliant metadata. File_Decompression_Technique: Use WinZip or equivalent Transfer_Size: 0.24 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/663a56c4d34e77890839b06b Network_Resource_Name: https://www.sciencebase.gov/catalog/item/663a56c4d34e77890839b06b Network_Resource_Name: https://doi.org/10.5066/F72Z13N1 Access_Instructions: Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to download the zipped file of data and metadata. The second link points to a landing page with metadata and data. The third link points to the landing page for the overall data release. Fees: None. Technical_Prerequisites: These data are available in a polyline shapefile format. The user must have software to read and process the data components of a shapefile. Metadata_Reference_Information: Metadata_Date: 20240912 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