Metadata: Identification_Information: Citation: Citation_Information: Originator: Ann E. Gibbs Originator: Alexander G. Snyder Originator: Nora M. Nieminski Publication_Date: 20260102 Title: Digital Shoreline Analysis System (DSAS) version 5.1.2 transects with long-term rate calculations for the northwest coast of Alaska (Cape Prince of Wales to Kotlik River) Geospatial_Data_Presentation_Form: vector digital data (polyline) Series_Information: Series_Name: data release Issue_Identification: 10.5066/P1RYHDR7 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/P1RYHDR7 Larger_Work_Citation: Citation_Information: Originator: Ann E. Gibbs Originator: Alexander G. Snyder Originator: Nora M. Nieminski Publication_Date: 2026 Title: National assessment of shoreline change: A GIS compilation of vector shorelines (1949 to 2015) and associated shoreline change data for the west coast of Alaska, Cape Prince of Wales to Kotlik River Series_Information: Series_Name: data release Issue_Identification: 10.5066/P1RYHDR7 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., Snyder, A.G., Nieminski, N.M., 2026, National assessment of shoreline change: A GIS compilation of vector shorelines (1949 – 2015) and associated shoreline change data for the west coast of Alaska, Cape Prince of Wales to Kotlik River: U.S. Geological Survey data release, https://doi.org/10.5066/P1RYHDR7. Online_Linkage: https://doi.org/10.5066/P1RYHDR7 Description: Abstract: This dataset consists of long-term (greater than 60 years) shoreline change rates for the west coast of Alaska between Cape Prince of Wales and the Kotlik River. Rate calculations were computed within a GIS using the Digital Shoreline Analysis System (DSAS) version 5.1.2, an ArcGIS extension developed by the U.S. Geological Survey. Long-term rates of shoreline change were calculated using a linear regression or end point rate-of-change based on available shoreline data between 1949 and 2015. 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 coast of Alaska, coastal erosion is widespread and threatens communities, infrastructure, and coastal habitat. As the coast changes, there are many 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. 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 coastal change hazards. Supplemental_Information: Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the Alaska Division of Geological & Geophysical Surveys or the U.S. Government. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the dataset 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: 1949 Ending_Date: 2015 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -168.0948 East_Bounding_Coordinate: -160.4740 North_Bounding_Coordinate: 65.5317 South_Bounding_Coordinate: 62.9810 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:68bf74c0d4be023bd943d3ec Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: State of Alaska Place_Keyword: Bering Sea Place_Keyword: Norton Sound Place_Keyword: Brevig Mission Place_Keyword: Teller Place_Keyword: Nome Place_Keyword: Golovin Place_Keyword: Shaktoolik Place_Keyword: Unalakleet Place_Keyword: Stebbins Place_Keyword: Saint Michael Place: Place_Keyword_Thesaurus: None Place_Keyword: United States of America Place_Keyword: Alaska 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. These data are marked with a Creative Common CC BY 4.0 License, and users must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. Please recognize and acknowledge the U.S. Geological Survey and the Alaska Division of Geological & Geophysical Surveys as the originators 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 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://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 attributes were added after rate calculations. The data have been quality checked. Logical_Consistency_Report: These data were generated using DSAS version 5.1.2. The transects automatically generated by the software were visually inspected along with the shoreline data prior to rate calculations. Sometimes transect positions were manually edited within a standard ArcMap edit session to adjust the position at which an individual transect intersected the shorelines to better represent an orthogonal position to the general trend of the coast over time. 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 west coast of Alaska, between Cape Prince of Wales and the Kotlik 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. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 2025 Title: Midshore baselines for the northwest coast of Alaska (Cape Prince of Wales to Kotlik 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://doi.org/10.5066/P1RYHDR7 Type_of_Source_Media: Digital Resources Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2025 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: DSAS baselines Source_Contribution: DSAS baselines used for calculation of shoreline change rates, available from this same data release.. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 2025 Title: Shorelines from 1949 to 2015 for the northwest coast of Alaska (Cape Prince of Wales to Kotlik River) used in shoreline change analysis Geospatial_Data_Presentation_Form: shapefile Publication_Information: Publication_Place: online Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P1RYHDR7 Type_of_Source_Media: Digital Resources Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1949 Ending_Date: 2015 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: DSAS shoreline Source_Contribution: DSAS shoreline file used for calculation of shoreline change rates, available from this same data release. Process_Step: Process_Description: Transect features were generated using DSAS v5.1.2 in ArcMap v10.8.1. Parameters Used: Baseline Layer=NorthwestAK_baselines, Baseline ID Field=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. Process_Date: 2024 Process_Step: Process_Description: Some transects were manually edited to ensure they intersected all shorelines and were as close to perpendicular as possible. Process_Date: 2024 Process_Step: Process_Description: Rate calculations performed using DSAS v5.1.2 in ArcMap v10.8.1 on selected shoreline features. Parameters Used: Shoreline Layer= NorthwestAK_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)], [End-point Rate (EPR)], [Linear Regression Rate (LRR)], [Weighted Linear Regression Rate (WLR)],Confidence Interval=90 percent, producing rates and intersect points. Process_Date: 2025 Process_Step: Process_Description: The transect feature class was exported from a personal geodatabase to a shapefile in ArcCatalog v10.8.1 by performing a right-mouse click on the data layer > export > to shapefile (single). Process_Date: 2025 Process_Step: Process_Description: BestRate, BestUNCY, and RateType fields were added to the shapefile. BestRate was calculated as EPR where ShrCount=2 and LRR where ShrCount=3. BestUNCY was calculated as EPRUncy where ShrCount=2 and LCI90 where ShrCount=3.RateType was calculated as EPR where ShrCount=2 and LRR where ShrCount=3. Process_Date: 2025 Process_Step: Process_Description: The exported shoreline shapefile was reprojected in Esri's ArcGIS Pro v3.4.3 > Data Management Tools > Projections and Transformations > Project. Parameters: input projection = NAD 1983 UTM Zone 3N; output projection = geographic coordinates (WGS84); transformation = WGS_1984_(ITRF00)_To_NAD_1983. Process_Date: 2025 Process_Step: Process_Description: The exported and edited transect shapefile was projected in Esri's ArcGIS Pro v3.4.3 ) > Data Management Tools > Projections and Transformations > Feature > Project. Parameters: input projection – NAD 1983 UTM Zone 3N); output projection - geographic coordinates (WGS84); transformation = WGS_1984_(ITRF00)_To_NAD_1983. Process_Date: 2025 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: 20085 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.0000001 Longitude_Resolution: 0.0000001 Geographic_Coordinate_Units: Decimal seconds Geodetic_Model: Horizontal_Datum_Name: D_WGS_1984 Ellipsoid_Name: WGS_1984 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257223563 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: 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: Enumerated_Domain: Enumerated_Domain_Value: Polyline ZM Enumerated_Domain_Value_Definition: ESRI polyline shapefile Enumerated_Domain_Value_Definition_Source: Esri 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 (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 223 Range_Domain_Maximum: 21868 Attribute_Units_of_Measure: Unitless 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 (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 40 Attribute_Units_of_Measure: Unitless Attribute: Attribute_Label: TransOrder Attribute_Definition: Assigned by DSAS based on ordering of transects along the baseline or baselines. If the user manually adds transects to the file in an edit session, they will be added to the end of the transect attribute table and given a new TransectID (ObjectID). However, TransOrder will be updated to reflect the position of the new transect with respect to the other transects along the baseline. This field provides the user with a method to sort transect attribute data from the start of the baseline segment with an ID=1 and increment by one alongshore to the end of the final baseline segment. Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 223 Range_Domain_Maximum: 22153 Attribute_Units_of_Measure: Unitless Attribute: Attribute_Label: Azimuth Attribute_Definition: Used to record the azimuth of the transect measured in degrees clockwise from north. Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 360 Attribute_Units_of_Measure: Degrees Attribute: Attribute_Label: ShrCount Attribute_Definition: The total number of shorelines intersected by the transect and used for change analysis. Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2 Range_Domain_Maximum: 3 Attribute_Units_of_Measure: Number of shorelines 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: 11100.00 Range_Domain_Maximum: 1162943.01 Attribute_Units_of_Measure: Meters Attribute: Attribute_Label: SCE Attribute_Definition: The shoreline change envelope (SCE) reports a distance, not a rate. The SCE is the distance between the most seaward and most landward shoreline 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: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 798.23 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. If this distance is divided by the number of years elapsed between the two shoreline positions, the result is the End Point Rate (EPR). Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -798.23 Range_Domain_Maximum: 288.97 Attribute_Units_of_Measure: Meters Attribute: Attribute_Label: EPR Attribute_Definition: End-point rate Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -12.45 Range_Domain_Maximum: 4.72 Attribute_Units_of_Measure: meters per year Attribute: Attribute_Label: EPRunc Attribute_Definition: Uncertainty of the end point rate Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.08 Range_Domain_Maximum: 0.38 Attribute_Units_of_Measure: meters per year 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 and negative values indicating erosion. A value of 9999 (no data) indicates that only 2 shorelines were available and a LRR rate could not be calculated. Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -10.53 Range_Domain_Maximum: 4.66 Attribute_Units_of_Measure: meters per year 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: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 1 Attribute_Units_of_Measure: Unitless Attribute: Attribute_Label: LSE Attribute_Definition: The predicted (or estimated) values of y (the distance from baseline in meters) are computed for each shoreline point by using the values of x (the shoreline date) and solving the equation for the best-fit regression line (y=mx+b). The standard error is also called the standard deviation. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 276.51 Attribute_Units_of_Measure: Meters 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: 38.45 Attribute_Units_of_Measure: Meters per year Attribute: Attribute_Label: WLR Attribute_Definition: Weighted linear regression rate Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -10.65 Range_Domain_Maximum: 6.2 Attribute_Units_of_Measure: Meters per year Attribute: Attribute_Label: WR2 Attribute_Definition: R-squared of weighted linear regression Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 1 Attribute_Units_of_Measure: Unitless Attribute: Attribute_Label: WSE Attribute_Definition: Standard error of weighted linear regression Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 49.21 Attribute_Units_of_Measure: Meters Attribute: Attribute_Label: WCI90 Attribute_Definition: 90 percent confidence interval of weighted linear regression Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 40.31 Attribute_Units_of_Measure: Meters per year Attribute: Attribute_Label: BestRate Attribute_Definition: The best shoreline change statistic for the transect. End-point rate (EPR) where RateType = EPR and linear regression rate (LRR) where RateType = LRR Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -12.45 Range_Domain_Maximum: 4.72 Attribute_Units_of_Measure: meters per year Attribute: Attribute_Label: BestUNCY Attribute_Definition: Uncertainty of the BestRate. EPRunc where RateType=EPR, LCI90 where RateType=LRR Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.0 Range_Domain_Maximum: 38.45 Attribute_Units_of_Measure: meters per year Attribute: Attribute_Label: RateType Attribute_Definition: User defined rate type Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: EPR Enumerated_Domain_Value_Definition: BestRate is end-point rate type where ShrCount = 2 Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: LRR Enumerated_Domain_Value_Definition: BestRate is linear regression rate type used where ShrCount = 3 Enumerated_Domain_Value_Definition_Source: Producer defined Attribute: Attribute_Label: SHAPE_Leng Attribute_Definition: Length of transect in meter units, assuming data were properly projected in a meter-based coordinate system. This field is automatically generated and maintained when data are within a geodatabase. Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 40.99 Range_Domain_Maximum: 900 Attribute_Units_of_Measure: Meters Overview_Description: Entity_and_Attribute_Overview: The entity and attribute information provided here describes the tabular data associated with the dataset. 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 dataset. Entity_and_Attribute_Detail_Citation: The entity and attribute information were generated by the individual and/or agency identified as the originator of the dataset. Please review the rest of the metadata record for additional details and information. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey - ScienceBase 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) and the Alaska Division of Geological & Geophysical Surveys (DGGS), 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 v3.4.3 Format_Specification: Esri polyline shapefile Format_Information_Content: Zip file contains shoreline change rates measured along shore perpendicular transects on the northwest coast of Alaska and associated metadata. File_Decompression_Technique: Use WinZip or equivalent Transfer_Size: 1.8 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://doi.org/10.5066/P1RYHDR7 Access_Instructions: Data can be downloaded using the Network_Resource_Name link and selecting the specific Child Items title page. 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: 20260102 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