Short-term shoreline change rates for the Virginia coastal region using the Digital Shoreline Analysis System version 5.1

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Metadata:

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Marie K. Bartlett
Publication_Date: 20230526
Title:

Short-term shoreline change rates for the Virginia coastal region using the Digital Shoreline Analysis System version 5.1

Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:

Series_Name: data release
Issue_Identification: doi:10.5066/P9DHOFXU

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/P9DHOFXU
Online_Linkage:

https://www.sciencebase.gov/catalog/item/641b26f7d34e4c337f0c220f

Larger_Work_Citation:

Citation_Information:

Originator: Marie K. Bartlett
Originator: Rachel E. Henderson
Originator: Amy S. Farris
Publication_Date: 2023
Title:

USGS National Shoreline Change — A GIS Compilation of Vector Shorelines and Associated Shoreline Change Data for Coastal Virginia from the 1840s to 2010s

Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:

Series_Name: data release
Issue_Identification: doi:10.5066/P9DHOFXU

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

Bartlett, M.K., Henderson R.E., and Farris, A.S., 2023, USGS National Shoreline Change—A GIS compilation of vector shorelines and associated shoreline change data for coastal Virginia from the 1840s to 2010s: U.S. Geological Survey data release, https://doi.org/10.5066/P9DHOFXU.

Online_Linkage: https://doi.org/10.5066/P9DHOFXU
Online_Linkage:

https://www.sciencebase.gov/catalog/item/641b186fd34e4c337f0c1de3

Description:

Abstract:

The U.S. Geological Survey (USGS) has compiled national shoreline data for more than 20 years to document coastal change and serve the needs of research, management, and the public. Maintaining a record of historical shoreline positions is an effective method to monitor national shoreline evolution over time, enabling scientists to identify areas most susceptible to erosion or accretion. These data can help coastal managers and planners understand which areas of the coast are vulnerable to change.
This data release includes a compilation of previously published historical shoreline positions for Virginia spanning 148 years (1849-1997), and two new mean high water (MHW) shorelines extracted from lidar data collected in 2010 and 2017. These data provide a standardized shoreline database for the state. This release includes both long-term (up to 168 years) and short term (~20 years) rates. Files associated with the long-term and short-term rates are appended with "LT" and "ST", respectively. A proxy-datum bias reference line that accounts for the positional difference in a proxy shoreline (e.g. High Water Line (HWL) shoreline) and a datum shoreline (e.g. MHW shoreline) is also included in this release.

Purpose:

This dataset describes short-term (20 years) shoreline change rates for the Virginia coastal region, generated to maintain a national assessment of shoreline change.

Supplemental_Information:

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. Short-term rates of shoreline change were calculated using a linear regression rate based on available shoreline data. 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 rates. This dataset consists of shoreline change rates calculated with DSAS v5.1 and stored as a new transect layer. Original measurement transects are cast by DSAS from the baseline to intersect shoreline vectors, and the intersect data provide location and time information used to calculate rates of change.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1997
Ending_Date: 2017

Currentness_Reference: ground condition at the time of shoreline source data

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -76.0322
East_Bounding_Coordinate: -75.4158
North_Bounding_Coordinate: 37.8764
South_Bounding_Coordinate: 36.5504

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: Baseline
Theme_Keyword: Shoreline
Theme_Keyword: Shoreline Change
Theme_Keyword: Digital Shoreline Analysis System
Theme_Keyword: DSAS
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Woods Hole Coastal and Marine Science Center
Theme_Keyword: WHCMSC
Theme_Keyword: Atlantic Coast
Theme_Keyword: North America
Theme_Keyword: Mid-Atlantic
Theme_Keyword: Virginia
Theme_Keyword: Mean High Water
Theme_Keyword: Erosion
Theme_Keyword: Accretion
Theme_Keyword: long-term change
Theme_Keyword: short-term change

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: coastal processes
Theme_Keyword: geospatial datasets
Theme_Keyword: erosion
Theme_Keyword: shoreline accretion

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:641b26f7d34e4c337f0c220f

Place:

Place_Keyword_Thesaurus: None
Place_Keyword: Atlantic Coast
Place_Keyword: Virginia
Place_Keyword: United States

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. These data are not to be used for navigation.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Marie K. Bartlett
Contact_Organization: U.S. Geological Survey

Contact_Position: Geologist
Contact_Address:

Address_Type: mailing
Address: 384 Woods Hole Rd
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543

Contact_Voice_Telephone: 508-457-8700 x2306
Contact_Electronic_Mail_Address: mbartlett@usgs.gov

Browse_Graphic:

Browse_Graphic_File_Name:

https://www.sciencebase.gov/catalog/file/get/641b26f7d34e4c337f0c220f?name=VA_rates_ST_browse.JPG

Browse_Graphic_File_Description: Map view of dataset
Browse_Graphic_File_Type: JPEG

Native_Data_Set_Environment: Microsoft Windows 10 Esri ArcGIS 10.7.1
Cross_Reference:

Citation_Information:

Originator: Cheryl J. Hapke
Originator: Emily A. Himmelstoss
Originator: Meredith G. Kraztmann
Originator: Jeffrey H. List
Originator: E. Robert Thieler
Publication_Date: 20120423
Title:

National Assessment of Shoreline Change: Historical Shoreline Change along the New England and Mid-Atlantic Coasts

Geospatial_Data_Presentation_Form: vector digital data
Series_Information:

Series_Name: Open-File Report
Issue_Identification: 2010-1118

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Online_Linkage: https://pubs.usgs.gov/of/2010/1118/

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: 2021
Title:

Digital Shoreline Analysis System (version 5.1): U.S. Geological Survey Software

Geospatial_Data_Presentation_Form: publication
Series_Information:

Series_Name: software release
Issue_Identification: version 5.1

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

Use the first two links to access the software. The third link directs to the DSAS project page. Current version of software at time of use was 5.1.

Online_Linkage: https://code.usgs.gov/cch/dsas/
Online_Linkage: https://doi.org/10.5066/P9VW42I0
Online_Linkage: https://woodshole.er.usgs.gov/project-pages/DSAS/

Cross_Reference:

Citation_Information:

Originator: Emily A. Himmelstoss
Originator: Rachel E. Henderson
Originator: Meredith G. Kratzmann
Originator: Amy S. Farris
Publication_Date: 20211019
Title: Digital Shoreline Analysis System (version 5.1) User Guide
Geospatial_Data_Presentation_Form: publication
Series_Information:

Series_Name: Open-File Report
Issue_Identification: 2021-1091

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

Refer to the DSAS user guide for more information about attribute requirements, accuracy reports, and feature creation.

Online_Linkage: https://doi.org/10.3133/ofr20211091
Online_Linkage: https://woodshole.er.usgs.gov/project-pages/DSAS/

Cross_Reference:

Citation_Information:

Originator: Peter Ruggiero
Originator: Jeffrey H. List
Publication_Date: 200909
Title:

Improving Accuracy and Statistical Reliability of Shoreline Position and Change Rate Estimates

Geospatial_Data_Presentation_Form: publication
Series_Information:

Series_Name: Journal of Coastal Research
Issue_Identification: vol. 255

Publication_Information:

Publication_Place: n/a
Publisher: Coastal Education and Research Foundation

Other_Citation_Details: ppg. 1069-1081
Online_Linkage: https://doi.org/10.2112/08-1051.1

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.

Logical_Consistency_Report:

These data were generated using DSAS v5.1. 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 individual transects intersect the shorelines to better represent an orthogonal position to the general trend of the coast over time. It is possible that a small (centimeter-scale) offset may occur when projecting from outside of the spatial reference system used for analysis (UTM Zone 18N WGS84). This is an ArcGIS projection issue; rate data are unaffected.

Completeness_Report:

This dataset contains the transects automatically generated by the DSAS software application that were used to calculate shoreline change rates for the region. Additional transects may have been generated but did not intersect the minimum requirement of three shorelines. Shoreline change rates data are provided where there are available shorelines to compute change metrics. Gaps in the lidar coverage may mean not every transect intersects each shoreline date, resulting in gaps in the rates.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The uncertainty of the linear regression rate is estimated by the elements LR2, LSE and LCI90. See the attribute definition of each for more information.

Lineage:

Process_Step:

Process_Description:

A polyline, midshore baseline was constructed using standard feature creation tools in Esri's ArcMap v10.7.1. The baseline was positioned to follow to the overall orientation of the shorelines alongshore (see larger work citation, VA_baseline.shp, VA_shorelines.shp). This was done so that the transects, which are generated by the Digital Shoreline Analysis System and extend from the baseline, would intersect roughly perpendicular to the general trend of the shorelines. The baseline was constructed in UTM zone 18N (WGS 84) coordinate system. This process step and all subsequent process steps were performed by the same person - Marie K. Bartlett

Process_Date: 2022
Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Marie K. Bartlett
Contact_Organization: U.S. Geological Survey

Contact_Position: Geologist
Contact_Address:

Address_Type: mailing and physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598

Contact_Voice_Telephone: 508-548-8700 x 2306
Contact_Electronic_Mail_Address: mbartlett@usgs.gov

Process_Step:

Process_Description:

To calculate short-term rates, only lidar-based, MHW shorelines (1997-2017) were used for transect generation. This subset of shorelines was exported from VA_shorelines and renamed VA_shorelines_ST. Short-term transect features were generated in a personal geodatabase using DSAS v5.1.2020.0720.0030. Parameters Used: baseline layer = VA_baseline, baseline group field = NULL, shoreline layer = VA_shorelines_ST, transect spacing = 50 meters, search distance = 200 meters, land direction = right, shoreline intersection = seaward, File produced = VA_transects_ST. Some transects were manually edited for length, moved, or deleted in an edit session using standard editing tools in ArcMap v10.7.1 For additional details on these parameters, please see the DSAS help file distributed with the DSAS software, or visit the USGS website at: https://woodshole.er.usgs.gov/project-pages/DSAS/

Process_Date: 2022

Process_Step:

Process_Description:

Shoreline rate calculations were performed for short-term rates without bias, since only MHW shorelines were used. Parameters Used: shoreline layer= VA_shorelines_ST, shoreline date field = Date_, shoreline uncertainty field name = Uncy, the default accuracy = 5.1 meters, shoreline intersection = seaward, stats calculations = [LRR], shoreline threshold = 2, confidence interval = 90%. Files produced = VA_trans_ST_rates_20221208_145953, VA_trans_ST_intersect_20221208_145953. Note: Only MHW shorelines were used in analysis (1997-2017) so the proxy-datum bias was not applied.

Process_Date: 2022

Process_Step:

Process_Description:

The rate feature classes were exported to shapefiles in ArcMap v10.7.1 by right-clicking the transect layer > data > export data. Coordinate system: UTM Zone 18N (WGS84).

Process_Date: 2023

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: 1882

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:

UTM_Zone_Number: 18
Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -75.0
Latitude_of_Projection_Origin: 0.0
False_Easting: 500000.0
False_Northing: 0.0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:

Abscissa_Resolution: 0.6096
Ordinate_Resolution: 0.6096

Planar_Distance_Units: meters

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: VA_rates_ST.shp Attribute Table
Entity_Type_Definition:

Rates of short-term shoreline change are calculated by DSAS and stored in the transect file, using the distance measurements between shorelines and baseline at each DSAS transect. Short-term date range covers only lidar based, mean high water shorelines and therefore no bias was applied. The shapefiles will have ST for short-term in filename.

Entity_Type_Definition_Source: U.S. Geological Survey (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: Feature geometry. Rates are polyline shapefiles.

Attribute:

Attribute_Label: BaselineID
Attribute_Definition:

Unique identification number of the baseline segment. If BaselineID=0 no transects will be generated. Used by DSAS to determine transect ordering alongshore if multiple baseline segments exist.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 2
Range_Domain_Maximum: 14

Attribute:

Attribute_Label: GroupID
Attribute_Definition:

This optional field is a way to aggregate transects on the basis of physical variations alongshore (for example, tidal inlets, change in coastal type, or hard stabilization features). This value was assigned by the user as an attribute to a baseline segment and results in a group average being reported in the DSAS summary text file.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 2
Range_Domain_Maximum: 8

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: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 494
Range_Domain_Maximum: 3360

Attribute:

Attribute_Label: Azimuth
Attribute_Definition:

Assigned by DSAS to record the azimuth of the transect measure in degrees clockwise from North. If a transect position has been adjusted during the editing process, the azimuth value in the attribute table is updated automatically.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 23.78
Range_Domain_Maximum: 355.56

Attribute:

Attribute_Label: ShrCount
Attribute_Definition: Number of shorelines used to compute shoreline change metrics.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 2
Range_Domain_Maximum: 3

Attribute:

Attribute_Label: TCD
Attribute_Definition:

The Total Cumulative Distance (TCD) is the measure in meters along shore from the start of the baseline segment with an ID=1, and measured sequentially alongshore to the end of the final baseline segment

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 27957.64
Range_Domain_Maximum: 217385.29

Attribute:

Attribute_Label: EPR
Attribute_Definition:

The end point rate (EPR) is calculated by determining the distance between the oldest and youngest shoreline on a DSAS transect and dividing by the time elapsed between the two shoreline dates.Decimal values may be positive or negative, which is used to indicate landward (negative) or seaward (positive) direction from baseline origin. Reported in meters per year.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -44.3
Range_Domain_Maximum: 32.07

Attribute:

Attribute_Label: EPRunc
Attribute_Definition:

An estimate of end point rate uncertainty. The shoreline uncertainties for the two positions used in the end point calculation are each squared, then added together (summation of squares). The square root of the summation of squares is divided by the number of years between the two shorelines.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.19
Range_Domain_Maximum: 1.21

Attribute:

Attribute_Label: LRR
Attribute_Definition:

A linear regression rate-of-change (LRR) statistic was calculated by fitting a least-squares regression line to all shoreline points for a particular transect. Any shoreline points that are referenced to HWL were adjusted by the proxy-datum bias distance (meters) along the transect to correct for the offset between proxy-based HWL and datum-based MHW shorelines. 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. LRR calculations require a minimum of 3 shorelines; less than 3 shorelines results in a “null” value, which is not a supported value in shapefile format. A value of 9999 in the LRR attribute field along with a ShRCount of 2 indicates the required number of shorelines to compute the linear regression rate was not met.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -1.83
Range_Domain_Maximum: 5.58

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 0.0 to 1.0 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). A value of 9999 in the LR2 attribute field along with a ShRCount of 2 indicates the required number of shorelines to compute the linear regression rate was not met.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.0
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. A value of 9999 in the LSE attribute field along with a ShRCount of 2 indicates the required number of shorelines to compute the linear regression rate was not met.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.01
Range_Domain_Maximum: 27.74

Attribute:

Attribute_Label: LCI90
Attribute_Definition:

The 90 percent confidence interval (LCI90) is calculated by multiplying the standard error 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 and LCI90 = 0.7 could be reported as a rate of 1.2 (+/-) 0.7 meters/year. A value of 9999 in the LCI90 attribute field along with a ShRCount of 2 indicates the required number of shorelines to compute the linear regression rate was not met.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.01
Range_Domain_Maximum: 12.34

Attribute:

Attribute_Label: SHAPE_Leng
Attribute_Definition: Length of feature in meter units (UTM zone 18N, WGS 84)
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 31.661
Range_Domain_Maximum: 996.629

Overview_Description:

Entity_and_Attribute_Overview:

The entity and attribute information provided here describes the tabular data associated with short-term (~20 years) shoreline change rates. Only modern, MHW, lidar-based shorelines are used to calculate short-term rates, therefore the proxy-datum bias does not apply. Please review the individual attribute descriptions for detailed information. All calculations for length are in meter units and were based on the UTM zone 18N WGS 84 projection. This region has two shapefiles describing rates, long-term (up to 168 years) and short-term (~20 years).

Entity_and_Attribute_Detail_Citation: U.S. Geological Survey

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey
Contact_Person: GS 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 polyline shapefile of Virginia short-term rates of change (VA_rates_ST.shp and other shapefile components), browse graphic (VA_rates_ST_browse.JPG), and the FGDC CSDGM metadata in XML format.

Distribution_Liability:

Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. 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 have been processed successfully on a computer system at the 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. The USGS or the U.S. Government shall not be held liable for improper or incorrect use of the data described and/or contained herein. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

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:

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. Additional files of the same name included are FGDC CSDGM-compliant metadata in XML format.

Transfer_Size: 0.13

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://www.sciencebase.gov/catalog/item/641b26f7d34e4c337f0c220f

Fees: None.

Metadata_Reference_Information:

Metadata_Date: 20230526
Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Marie K. Bartlett
Contact_Organization: U.S. Geological Survey

Contact_Address:

Address_Type: mailing and physical
Address: 384 Woods Hole Rd
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA

Contact_Voice_Telephone: 508-548-8700 x2306
Contact_Electronic_Mail_Address: whsc_data_contact@usgs.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

This page is <https://cmgds.marine.usgs.gov/catalog/whcmsc/SB_data_release/DR_P9DHOFXU/VA_rates_ST.html>