U.S. Geological Survey 2019 1.0 vector digital data data release DOI:10.5066/P9RRBEYK Woods Hole Coastal and Marine Science Center, Woods Hole, MA U.S. Geological Survey, Coastal and Marine Geology Program https://doi.org/10.5066/P9RRBEYK https://www.sciencebase.gov/catalog/item/5c65b170e4b0fe48cb38ff82 Emily A. Himmelstoss Amy S. Farris Kathryn M. Weber Rachel E. Henderson 2019 1.0 vector digital data data release DOI:10.5066/P9RRBEYK Reston, VA U.S. Geological Survey suggested citation: Himmelstoss, E.A., Farris, A.S., Weber, K.M., and Henderson, R.E., 2019, Massachusetts shoreline change project, 2018 update–A GIS compilation of shoreline change rates calculated using Digital Shoreline Analysis System version 5.0, with supplementary intersects and baselines for Massachusetts: U.S. Geological Survey data release, https://doi.org/10.5066/P9RRBEYK https://doi.org/10.5066/P9RRBEYK https://www.sciencebase.gov/catalog/item/5be5857ce4b0b3fc5cf8c6ca The Massachusetts Office of Coastal Zone Management launched the Shoreline Change Project in 1989 to identify erosion-prone areas of the coast. The shoreline position and change rate are used to inform management decisions regarding the erosion of coastal resources. In 2001, a shoreline from 1994 was added to calculate both long- and short-term shoreline change rates along ocean-facing sections of the Massachusetts coast. In 2013, two oceanfront shorelines for Massachusetts were added using 2008-9 color aerial orthoimagery and 2007 topographic lidar datasets obtained from the National Oceanic and Atmospheric Administration's Ocean Service, Coastal Services Center. This 2018 data release includes rates that incorporate two new mean high water (MHW) shorelines for the Massachusetts coast extracted from lidar data collected between 2010 and 2014. The first new shoreline for the State includes data from 2010 along the North Shore and South Coast from lidar data collected by the U.S. Army Corps of Engineers (USACE) Joint Airborne Lidar Bathymetry Technical Center of Expertise. Shorelines along the South Shore and Outer Cape are from 2011 lidar data collected by the U.S. Geological Survey's (USGS) National Geospatial Program Office. Shorelines along Nantucket and Martha’s Vineyard are from a 2012 USACE Post Sandy Topographic lidar survey. The second new shoreline for the North Shore, Boston, South Shore, Cape Cod Bay, Outer Cape, South Cape, Nantucket, Martha’s Vineyard, and the South Coast (around Buzzards Bay to the Rhode Island Border) is from 2013-14 lidar data collected by the (USGS) Coastal and Marine Geology Program. This 2018 update of the rate of shoreline change in Massachusetts includes two types of rates. Some of rates include a proxy-datum bias correction, this is indicated in the filename with “PDB”. The rates that do not account for this correction have “NB” in their file names. The proxy-datum bias is applied because in some areas a proxy shoreline (like a High Water Line shoreline) has a bias when compared to a datum shoreline (like a Mean High Water shoreline). In areas where it exists, this bias should be accounted for when calculating rates using a mix of proxy and datum shorelines. This issue is explained further in Ruggiero and List (2009) and in the process steps of the metadata associated with the rates. This dataset includes a reference baseline used by the Digital Shoreline Analysis System (DSAS) to calculate rate-of-change statistics. This baseline layer serves as the starting point for orthogonally-oriented transects generated by the DSAS application. The transects intersect each shoreline and establish measurement points used to calculate shoreline-change rates. 2019 publication date Complete None planned -70.839129 -70.446173 41.421644 41.300669 USGS Metadata Identifier USGS:5c65b170e4b0fe48cb38ff82 ISO 19115 Topic Category oceans environment geoscientificInformation None Baseline Shoreline Shoreline Change Digital Shoreline Analysis System DSAS U.S. Geological Survey USGS Coastal and Marine Geology Program CMGP Woods Hole Coastal and Marine Science Center WHCMSC USGS Thesaurus geospatial datasets coastal processes None Atlantic Coast United States North America New England Massachusetts Martha's Vineyard None. 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. U.S. Geological Survey Emily A. Himmelstoss mailing and physical

384 Woods Hole Road

Woods Hole MA 02543-1598 USA 508-457-8700 x2262 508-547-2310 ehimmelstoss@usgs.gov https://www.sciencebase.gov/catalog/file/get/5c65b170e4b0fe48cb38ff82/?name=MarthasVineyard_baseline_south_browse.png Map view of data png Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.5.0.6491 Emily A. Himmelstoss Amy S. Farris Rachel E. Henderson Meredith G. Kratzmann Ayhan Ergul Ouya Zhang Jessica L. Zichichi 2018 software release version 5.0 Reston, VA U.S. Geological Survey https://code.usgs.gov/cch/dsas/ https://doi.org/10.5066/P9VW42I0 https://woodshole.er.usgs.gov/project-pages/DSAS/ Emily A. Himmelstoss Rachel E. Henderson Meredith G. Kratzmann Amy S. Farris 2018 publication Open-File Report 2018-1179 Reston, VA U.S. Geological Survey https://doi.org/10.3133/ofr20181179 https://woodshole.er.usgs.gov/project-pages/DSAS/ Emily A. Himmelstoss Amy S. Farris Kathryn M. Weber 2018 DOI:10.5066/P9O7S72B data release DOI:10.5066/P9O7S72B Reston, VA U.S. Geological Survey, Coastal and Marine Geology Program https://doi.org/10.5066/P9O7S72B https://www.sciencebase.gov/catalog/item/5bcde5dce4b0f0758fc178d0 https://www.sciencebase.gov/catalog/file/get/5bcde5dce4b0f0758fc178d0 Peter Ruggiero Jeffrey H. List 200909 publication Journal of Coastal Research vol. 255 n/a Coastal Education and Research Foundation ppg. 1069-1081 https://doi.org/10.2112/08-1051.1 The attributes in this layer are based on the requirements for use within the Digital Shoreline Analysis System (DSAS) software. Each polyline has a unique identification attribute (ID). This field is used by the Digital Shoreline Analysis System (DSAS) to designate the alongshore order of baselines, if more than one baseline exists. This baseline file is complete and contains the baseline segment(s) used to cast transects along sections of the coastal region where shoreline position data were available to calculate either a short- or long-term rate. The north and south shores of Martha’s Vineyard were run separately because the availability of PDB data was restricted to the south coast. The baseline serves as a reference point for transects cast by the Digital Shoreline Analysis System (DSAS) software. It does not correspond to any real-world feature. A baseline was constructed with respect to the time series of shoreline positions using standard editing tools in Esri's ArcMap v10.5. The baseline was positioned to conform to the overall orientation of the shorelines alongshore. This was done so that the transects, which are generated by the Digital Shoreline Analysis System from the baseline, would intersect roughly perpendicular to the general trend of the shorelines. This process step and all subsequent process steps were performed by the same person - Emily A. Himmelstoss 2017 Emily A. Himmelstoss U.S. Geological Survey mailing and physical

384 Woods Hole Road

Woods Hole MA 02543-1598 USA 508-548-8700 x 2262 508-457-2310 ehimmelstoss@usgs.gov The baseline shapefile was imported into a personal geodatabase in ArcCatalog v10.5 by right-clicking on the geodatabase > Import for use with the Digital Shoreline Analysis System (DSAS) software to perform rate calculations 2017 The baseline feature class was used as the input within the Digital Shoreline Analysis System (DSAS) software to generate transects and perform rate calculations. 2017 The baseline feature class was exported from a personal geodatabase to a shapefile in ArcCatalog v10.5 by performing a right-mouse click on the data layer > export > to shapefile (single). 2017 The baseline shapefile was projected in ArcToolbox v10.5 > Data Management Tools > Projections and Transformations > Project. parameters: input projection - UTM zone 19N (WGS 84); output projection- geographic coordinates (WGS 84); transformation = none. 2017 Added keywords section with USGS persistent identifier as theme keyword. Process performed on 20200810. The metadata title was modified to move the location name to the beginning of the title to account for the alphabetical listing of the individual records when ScienceBase migrates the data release to a new platform and "flattens" the data release structure (20260302). 20260302 U.S. Geological Survey VeeAnn A. Cross Marine Geologist Mailing and Physical

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov Vector String 4 0.0000001 0.0000001 Decimal degrees WGS_1984 WGS_1984 6378137.000000 298.257224 MarthasVineyard_baseline_south Table containing attribute information associated with the data set. U.S. Geological Survey FID Internal feature number used as a unique identifier of an object within a table primarily used in shapefiles. Esri Sequential unique whole numbers that are automatically generated. Shape Feature geometry. Esri Coordinates defining the features. OBJECTID Internal feature number used as a unique identifier of an object within a table primarily used in a geodatabase. Esri Sequential unique whole numbers that are automatically generated. ID Field required by the Digital Shoreline Analysis System (DSAS) software. DSAS uses this value to determine the ordering sequence of transects when the baseline feature contains multiple segments. Individual segments are numbered sequentially alongshore. U.S. Geological Survey 1 unlimited SHAPE_Leng Length of feature in meter units (UTM zone 19N, WGS 84) Esri 0 unlimited The entity and attribute information provided here describes the tabular data associated with the dataset. Please review the individual attribute descriptions for detailed information. U.S. Geological Survey U.S. Geological Survey - ScienceBase mailing address

Denver Federal Center, Building 810, Mail Stop 302

Denver CO 80225 United States 1-888-275-8747 sciencebase@usgs.gov The dataset contains the polyline baselines used for the analysis of shoreline data, (SHP and other shapefile components), browse graphic, and the FGDC CSDGM metadata in XML and TEXT format. 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. Shapefile ArcGIS 10.5 Esri polyline shapefile These files (.cpg, .dbf, .prj, .sbn, .sbx, .shp, .shp, .xml, 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. no compression applied 1 https://www.sciencebase.gov/catalog/file/get/5c65b170e4b0fe48cb38ff82 https://www.sciencebase.gov/catalog/item/5c65b170e4b0fe48cb38ff82 https://doi.org/10.5066/P9RRBEYK The first link downloads all the data on the landing page, the second link is to the dataset landing page, and the third link is to the main landing page of the data release. WMS 1.3.0 Web Mapping Services 1.3.0 https://www.sciencebase.gov/catalogMaps/mapping/ows/5c65b170e4b0fe48cb38ff82?service=wms&request=getcapabilities&version=1.3.0 https://www.sciencebase.gov/catalog/item/5c65b170e4b0fe48cb38ff82 https://doi.org/10.5066/P9RRBEYK The first link is for the Web Mapping Services, the second link is to the dataset landing page, and the third link is to the main landing page of the data release. WFS 1.0.0 Web Feature Services 1.0.0 https://www.sciencebase.gov/catalogMaps/mapping/ows/5c65b170e4b0fe48cb38ff82?service=wfs&request=getcapabilities&version=1.0.0 https://www.sciencebase.gov/catalog/item/5c65b170e4b0fe48cb38ff82 https://doi.org/10.5066/P9RRBEYK The first link is for the Web Feature Services, the second link is to the dataset landing page, and the third link is to the main landing page of the data release. None These data are available in a polyline shapefile format. The user must have software to read and process the data components of a shapefile. 20260302 Emily A. Himmelstoss U.S. Geological Survey mailing and physical

384 Woods Hole Road

Woods Hole MA 02543-1598 USA 508-548-8700 x2262 508-547-2310 whsc_data_contact@usgs.gov The metadata contact email address is a generic address in the event the person is no longer with USGS. (updated on 20240319) FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time