Metadata: Identification_Information: Citation: Citation_Information: Originator: Amy S. Farris Publication_Date: 2018 Title: Marsh Shorelines of the Massachusetts Coast from 2013-14 Topographic Lidar Data Edition: 1.0 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/F72R3QXR Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: Suggested citation: Farris, A.S., 2018, Marsh shorelines of the Massachusetts coast from 2013-14 topographic lidar data: U.S. Geological Survey data release, https://doi.org/10.5066/F72R3QXR. Online_Linkage: https://doi.org/10.5066/F72R3QXR Description: Abstract: The Massachusetts Office of Coastal Zone Management (CZM) launched the Shoreline Change Project in 1989 to identify erosion-prone areas of the Massachusetts coast. Seventy-six maps were produced in 1997 depicting a statistical analysis of shoreline change on ocean-facing shorelines from the mid-1800s to 1978 using multiple data sources. In 2001, a 1994 shoreline was added. More recently, in cooperation with CZM, the U.S. Geological Survey (USGS) delineated a new shoreline for Massachusetts using color aerial ortho-imagery from 2008 to 2009 and topographic lidar data collected in 2007. This update included a marsh shoreline, which was defined to be the tonal difference between low- and high-marsh seen in ortho-photos. Further cooperation between CZM and the U.S. Geological Survey (USGS) has resulted in another update in 2018, which includes beach shorelines, marsh shorelines and dune parameters, all of which were calculated from 2013-14 topographic lidar data. This metadata file describes the marsh shoreline that is part of the 2018 update. The marsh shoreline was defined to be the steep slope found at the seaward edge of the marsh vegetation. This definition was used because the marsh edge is the preferred shoreline indicator for computing rates of change and making position forecasts. Purpose: This 2013-2014 marsh shoreline is part of an update to the Massachusetts Office of Coastal Zone Management (CZM) Shoreline Change Project. It was extracted using a new slope-based method using topographic lidar data. The maximum slope was used to identify the edge of the marsh. Supplemental_Information: Note that the method may find an edge on any type of morphology (e.g. sandy beach or seawall). Therefore, the presence of a marsh edge does not necessarily mean that a marsh is present. In many parts of the state, a patchy marsh grass bed lies seaward of a sandy beach, this is called a fringing marsh. In these areas both the mean high water (MHW) shoreline and the marsh edge were kept because both have value. Since it was often difficult in imagery to distinguish sand, mud and brown marsh grass, and since we did not want to delete valid marsh sections, when in doubt, we kept the marsh edge even if it might not be on a marsh. To help elucidate this, an attribute named “MarshType” was added. It was set to “platform” if the marsh looked like a platform marsh. It was set to “fringing” if the marsh looked like a fringing marsh. It was set to “unknown” if it was not clear if the area was really a marsh. Note that all choices were subjective and based only on visual interpretation of the imagery. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20131120 Ending_Date: 20140412 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -71.023 East_Bounding_Coordinate: -69.932 North_Bounding_Coordinate: 42.811 South_Bounding_Coordinate: 41.2 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:5aabdfafe4b081f61aaf00d5 Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: oceans Theme_Keyword: geoscientificInformation Theme_Keyword: environment Theme_Keyword: elevation Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: Shoreline Theme_Keyword: marsh shoreline Theme_Keyword: marsh edge Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Coastal and Marine Geology Program Theme_Keyword: CMGP Theme_Keyword: Woods Hole Coastal and Marine Science Center Theme_Keyword: WHCMSC Theme_Keyword: National Assessment of Shoreline Change Project Theme_Keyword: National Oceanic and Atmospheric Administration Theme_Keyword: NOAA Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: coastal processes Theme_Keyword: geospatial analysis Theme_Keyword: geospatial datasets Theme_Keyword: geomorphology Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords Theme_Keyword: marsh Theme_Keyword: shore Theme: Theme_Keyword_Thesaurus: Coastal and Marine Ecological Classification Standard Theme_Keyword: Marsh Platform Place: Place_Keyword_Thesaurus: None Place_Keyword: Massachusetts Place_Keyword: MA Place_Keyword: Plum Island Place_Keyword: Ipswich Place_Keyword: Essex Place_Keyword: Duxbury Place_Keyword: Plymouth Place_Keyword: Marshfield Place_Keyword: Kingston Place_Keyword: Sandwich Place_Keyword: Wellfleet Place_Keyword: Chatham Place_Keyword: Pleasant Bay Place_Keyword: Quincy Place_Keyword: Squantum Place_Keyword: Rock Island Cove Place_Keyword: Pocasset Place_Keyword: Bourne Place_Keyword: Wareham Place_Keyword: Marion Place_Keyword: Mattapoisett Place_Keyword: Little Bay Place_Keyword: Fairhaven Access_Constraints: None Use_Constraints: Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the originator of the dataset. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Amy S. Farris Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 x2344 Contact_Facsimile_Telephone: 508-547-2310 Contact_Electronic_Mail_Address: afarris@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: https://www.sciencebase.gov/catalog/file/get/5aabdfafe4b081f61aaf00d5?name=MA_marsh_edge_browseGraphic.png Browse_Graphic_File_Description: Image showing the mean tide level contour, calculated marsh edge, and a profile example of calculating the marsh edge. Browse_Graphic_File_Type: PNG Data_Set_Credit: Massachusetts Office of Coastal Zone Management Native_Data_Set_Environment: Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.0.4.4000 Cross_Reference: Citation_Information: Originator: Theresa L. Smith Originator: Emily A. Himmelstoss Originator: E. Rober Thieler Publication_Date: 2013 Title: Massachusetts Shoreline Change Project: A GIS Compilation of Vector Shorelines and Associated Shoreline Change Data for the 2013 Update Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: Open-File Report Issue_Identification: 2012-1183 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: USGS Open File Report 2012-1183 Online_Linkage: https://pubs.usgs.gov/of/2012/1183/ Cross_Reference: Citation_Information: Originator: E. Robert Thieler Originator: James F. O’Connell Originator: Courney A. Schupp Publication_Date: 20010904 Title: The Massachusetts Shoreline Change Project—1800s to 1994 Geospatial_Data_Presentation_Form: publication Online_Linkage: https://web.whoi.edu/seagrant/wp-content/uploads/sites/24/2015/01/WHOI-T-01-001-Thieler-E.R.-The-Mass.-Shorel.pdf Cross_Reference: Citation_Information: Originator: Kathryn M. Weber Originator: Jeffery H. List Originator: Karen L. M. Morgan Publication_Date: 2005 Title: An Operational Mean High Water Datum for Determination of Shoreline Position from Topographic Lidar Data Geospatial_Data_Presentation_Form: publication Series_Information: Series_Name: Open-File Report Issue_Identification: 2005-1027 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: USGS Open File Report 2005-1027 Online_Linkage: https://pubs.usgs.gov/of/2005/1027/index.html Cross_Reference: Citation_Information: Originator: NOAA Originator: Office of Coast Survey Originator: Center for Operational Oceanographic Products and Services Originator: National Geodetic Survey Publication_Date: 2013 Title: VDatum Geospatial_Data_Presentation_Form: raster digital data Online_Linkage: https://vdatum.noaa.gov/about.html Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Results were compared to drone imagery at a small test site in Eastham (Sherwood, 2016 - see Source Information). The marsh edge was usually within 2 m of a visible edge in the drone imagery. The drone imagery is accurate to approximately 3 m. Logical_Consistency_Report: This method uses elevation data to find the maximum slope. It will find a max slope on most types of morphology, not just marshes. The shoreline was plotted over imagery and solutions that were obviously not on a marsh were removed. If it was not clear whether or not the shoreline was on a marsh, the attribute “MarshType” was set to “unknown”. Completeness_Report: A shoreline was not found for every salt marsh in the state. Shorelines were calculated wherever shorelines were found for the previous Massachusetts Shoreline Change Project update (Smith and others, 2013). This data release includes additional data from Pleasant Bay on Cape Cod. In some areas the lidar data did not extend far enough off-shore to cover the entire fringing marsh and thus no marsh edge exists even though a fringing marsh is present. This was particularly true in south Wellfleet. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: This method identifies the maximum slope from a 2013-2014 lidar data set (USGS and others, 2015 – in the source contributions). The lidar data have a horizontal accuracy of 0.42 meters at 95 percent confidence level. This maximum slope is used as a proxy for the marsh edge. Visual comparisons of the smoothed edge to ortho-imagery (NAIP, nominal accuracy 5 m) are usually within 5 meters of a visually identifiable marsh edge. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: United States Geological Survey (USGS), Coastal and Marine Geology Program (CMGP) Originator: National Aeronautics & Space Administration (NASA) Originator: Department of Commerce (DOC), National Oceanic & Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM) Publication_Date: 20150710 Title: 2013-2014 U.S. Geological Survey CMGP LiDAR: Post Sandy (MA, NH, RI) Geospatial_Data_Presentation_Form: tabular digital data Publication_Information: Publication_Place: Charleston, SC Publisher: NOAA's Ocean Service, Office for Coastal Management (OCM) Online_Linkage: ftp://coast.noaa.gov/pub/DigitalCoast/lidar1_z/geoid12b/data/4914/ Online_Linkage: https://coast.noaa.gov/digitalcoast/data/coastallidar Type_of_Source_Media: Digital imagery Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20131116 Ending_Date: 20141227 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: 2013-2014 Lidar data Source_Contribution: The topographic lidar data were used to create digital elevation models on which all the calculations were done. Source_Information: Source_Citation: Citation_Information: Originator: Christopher R Sherwood Publication_Date: 2016 Title: Low-altitude aerial imagery and related field observations associated with unmanned aerial systems (UAS) flights over Coast Guard Beach, Nauset Spit, Nauset Inlet, and Nauset Marsh, Cape Cod National Seashore, Eastham, Massachusetts on 1 March 2016 Geospatial_Data_Presentation_Form: raster digital data Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/F7CN721H Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/F7CN721H Type_of_Source_Media: Digital imagery Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20160301 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: drone imagery Source_Contribution: As mentioned in the “Attribute Accuracy” these data were used to validate results in a small area. This imagery is higher resolution and more accurate than what is available for the rest of the state. The marsh shoreline was plotted on this imagery to see how well the shoreline followed the marsh edge. Source_Information: Source_Citation: Citation_Information: Originator: Farm Service Agency Publication_Date: 2014 Title: National Agriculture Imagery Program Geospatial_Data_Presentation_Form: raster digital data Online_Linkage: https://nrcs.app.box.com/v/naip/folder/18492155995 Type_of_Source_Media: Digital imagery Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20140712 Ending_Date: 20140718 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: NAIP imagery Source_Contribution: These data were used to validate results throughout the state. This imagery is more accurate than imagery provided by ArcGIS. The marsh shoreline was plotted on this imagery to see how well the shoreline followed the marsh edge. Process_Step: Process_Description: The mean tide level (MTL) for each marsh was found using VDatum (version 3.7). MTL varies from -0.08 to 0.08 m (above NAVD88) across the state. I used 0 m for all marshes. Mean High Water was determined for each marsh from Vdatum and Weber and others (2005). A single value was used for each marsh. Process_Date: 2017 Source_Produced_Citation_Abbreviation: MTL, MHW Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Amy S. Farris Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 x2344 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: afarris@usgs.gov Process_Step: Process_Description: The processing steps outlined here were conducted for each marsh area separately. All marshes were chosen because there was a previous shoreline from the Massachusetts Shoreline Change Project update (Smith and others, 2013). Each marsh is geographically separated from the other marshes, so each was processed on its own. The goal of this first step is to get a mean tide level (MTL) contour to use as a baseline in the next step. The topographic lidar data is first downloaded from NOAA then loaded into ArcMap (version 10.4.1), gridded and contoured. This is done by the following steps: A) The LAS (x,y,z) data files were downloaded from NOAA in UTM, zone 19 (NAD83, NAVD88). B) The LAS files loaded into ArcMap: ArcToolbox >> Data Management >> LAS Dataset >> Create LAS Dataset. C) A DEM was created: ArcToolbox >> Conversion Tools >> To Raster >> LAS Dataset to Raster. D) The MTL was then contoured: ArcToolbox >> 3D Analyst Tools >> Raster Surface >> Contour. E) This contour was smoothed: ArcTools >> Cartography Tools >> Generalization >> Smooth Line, using PAEK smoothing at 100 m. The amount of smoothing was occasionally adjusted to improve the results. F) This line will be used as a baseline, so sections of the line in areas where we did not need to find a shoreline were removed (using the Arc editor). Where appropriate, disconnected sections of the line were joined with the Arc editor. G) The final lines were converted to points: ArcToolbox >> X Tools Pro >> Feature Conversions >> Convert Features to points and ArcToolbox >> Data Management Tools >> Features >> Add XY. F) The MTL contour was exported as a CSV file. This line is the baseline that will be used in the next step. Source_Used_Citation_Abbreviation: 2013-2014 Lidar data Process_Date: 2017 Source_Produced_Citation_Abbreviation: MTL contour for each analyzed area Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Amy S. Farris Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543 Country: USA Contact_Voice_Telephone: 508-548-8700 x2344 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: afarris@usgs.gov Process_Step: Process_Description: All the work in this process step is done separately on each marsh area. In this step the baseline from the previous step is loaded into Matlab (version 2017a) with the elevation data. The baseline is used to define transects and the elevation along each transect is found from the elevation data. The max slope along each transect is found and defined to be the marsh edge. This is done by the following steps: A) The same LAS files from the previous step were loaded into Matlab. B) A DEM was made from them (using the function griddata). C) The baseline made in the previous step was also loaded into Matlab. D) Transects are made: Equally spaced points (at 5m intervals) were found along this baseline. At each point a line perpendicular to the baseline was calculated (this is called a transect). The line extends out from both sides of the baseline. The length of each transect varied but was usually about 20-40m long. E) The elevation along each transect was extracted from the DEM (using the interp2 function). F) The marsh edge was defined to be the maximum slope along each transect between mean high water and (mean tide level - 0.5 m). Thus for each transect, we have an estimate of the shoreline position along that transect. Source_Used_Citation_Abbreviation: MTL contour for each analyzed area Source_Used_Citation_Abbreviation: 2013-2014 Lidar data Process_Date: 2017 Source_Produced_Citation_Abbreviation: raw marsh edge for each area analyzed Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Amy S. Farris Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543 Country: United States Contact_Voice_Telephone: 508-548-8700 x2344 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: afarris@usgs.gov Process_Step: Process_Description: All the work in this process step is done separately on each marsh area. In Matlab (version 2017a), the marsh edge found in the previous step was smoothed using a Gaussian weighted moving average with a 25 m window. Spurious points from the marsh line were removed using an interactive GUI in which the LAS data were plotted as dots color-coded by height with the marsh shoreline plotted on top. To aide decision making, the marsh edge was also displayed in Google Earth. It was helpful to look at images from different stages of the tidal cycle. Once this quality control check was done, the data were exported to a new shapefile (using the function shapewrite in the Mapping Toolbox, version 4.5.1). Source_Used_Citation_Abbreviation: raw marsh edge edge for each area analyzed Process_Date: 2017 Source_Produced_Citation_Abbreviation: preliminary marsh edge shapefiles for each area analyzed Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Amy S. Farris Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543 Country: United States Contact_Voice_Telephone: 508-548-8700 x2344 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: afarris@usgs.gov Process_Step: Process_Description: After the above steps were completed for each marsh area, the shapefiles for all regions were loaded into ArcMap (version 10.4.1) and plotted on NAIP imagery. Sections on sandy beaches were removed. There are many fringing marshes in the state. In these areas, both the mean high water (MHW) shoreline and the marsh edge were kept, because both have value. Since it is sometimes difficult in imagery to distinguish sand, mud and brown marsh grass, and since we did not want to delete valid marsh sections, when in doubt, we kept the marsh shoreline even if it might be on a small sandy area. A new attribute called “MarhType” was added. It was set to “platform” if the marsh looked like a platform marsh. It was set to “fringing” if the marsh looked like a fringing marsh. It was set to “unknown” if it was not clear if the area was really a marsh. Note that all choices were subjective and based only on visual interpretation of the imagery. All the individual shapefiles were joined into one shapefile for the whole state using Merge (ArcToolbox >> Data Management toolbox >> General >> Merge). The data were transformed from UTM zone 19 (NAD83) to geographic (WGS84) using ArcToolbox>>Data Management tools>>Projections and transformations>>Project. The software used the transromation WGS_1984_(ITRF00)_To_NAD_1983. Source_Used_Citation_Abbreviation: preliminary marsh edge shapefiles edge for each area analyzed Source_Used_Citation_Abbreviation: NAIP imagery Process_Date: 2018 Source_Produced_Citation_Abbreviation: final marsh edge shapefile Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Amy S. Farris Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543 Country: United States Contact_Voice_Telephone: 508-457-8700 x2344 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: afarris@usgs.gov Process_Step: Process_Description: Added keywords section with USGS persistent identifier as theme keyword. Process_Date: 20200807 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: VeeAnn A. Cross Contact_Position: Marine 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 x2251 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: vatnipp@usgs.gov 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: 447 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.000001 Longitude_Resolution: 0.000001 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: D_WGS_1984 Ellipsoid_Name: WGS_1984 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257224 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: MA_marsh_edge_2013_2014.shp 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: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: Name Attribute_Definition: name of feature Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Marsh edge Enumerated_Domain_Value_Definition: Marsh edge determined by the maximum slope along a transect perpendicular to the mean tide level seaward of the mean high water line Enumerated_Domain_Value_Definition_Source: Producer defined Attribute: Attribute_Label: Date_ Attribute_Definition: date of the lidar data in the format MM/DD/YYYY Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 11/20/2013 Enumerated_Domain_Value_Definition: date of the lidar data Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 04/07/2014 Enumerated_Domain_Value_Definition: date of the lidar data Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 04/10/2014 Enumerated_Domain_Value_Definition: date of the lidar data Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 04/04/2014 Enumerated_Domain_Value_Definition: date of the lidar data Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 11/28/2013 Enumerated_Domain_Value_Definition: date of the lidar data Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 12/04/2013 Enumerated_Domain_Value_Definition: date of the lidar data Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 04/12/2014 Enumerated_Domain_Value_Definition: date of the lidar data Enumerated_Domain_Value_Definition_Source: Producer defined Attribute: Attribute_Label: MarshType Attribute_Definition: type of marsh Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: platform Enumerated_Domain_Value_Definition: Marsh looks like a platform marsh in NAIP imagery Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: unknown Enumerated_Domain_Value_Definition: This particular spot might not be a marsh Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: fringing Enumerated_Domain_Value_Definition: Marsh looks like a fringing marsh in NAIP imagery Enumerated_Domain_Value_Definition_Source: Producer defined Overview_Description: Entity_and_Attribute_Overview: The entity and attribute information provided here describes the tabular data associated with the dataset. Please review the individual attribute descriptions for detailed information. Entity_and_Attribute_Detail_Citation: U.S. Geological Survey Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey - ScienceBase Contact_Address: Address_Type: mailing address Address: Denver Federal Center, Building 810, Mail Stop 302 City: Denver State_or_Province: CO Postal_Code: 80225 Country: United States Contact_Voice_Telephone: 1-888-275-8747 Contact_Electronic_Mail_Address: sciencebase@usgs.gov Resource_Description: The zip file MA_marsh_edge.zip contains the marsh edge shapefile (MA_marsh_edge_2013_2014.shp and other shapefile component files), the browse graphic (browseGraphic.png), 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. 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 10.4.1 Format_Information_Content: The zip file contains the data in shapefile format, browse graphic, and FGDC CSDGM metadta in XML format Transfer_Size: 1 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/5aabdfafe4b081f61aaf00d5 Network_Resource_Name: https://www.sciencebase.gov/catalog/item/5aabdfafe4b081f61aaf00d5 Network_Resource_Name: https://doi.org/10.5066/F72R3QXR Access_Instructions: The first link downloads all the files on the dataset landing page, the second link is to the dataset landing page where individual files can be downloaded, and the final link is the DOI link to the dataset landing page. Digital_Form: Digital_Transfer_Information: Format_Name: WMS Format_Version_Number: 1.3.0 Format_Information_Content: The data provided as a WMS (web mapping service). Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalogMaps/mapping/ows/5aabdfafe4b081f61aaf00d5?service=wms&request=getcapabilities&version=1.3.0 Digital_Form: Digital_Transfer_Information: Format_Name: WFS Format_Version_Number: 1.0.0 Format_Information_Content: The data provided as a WFS (web feature service). Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalogMaps/mapping/ows/5aabdfafe4b081f61aaf00d5?service=wfs&request=getcapabilities&version=1.0.0 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: 20200807 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Amy S. Farris Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 x2344 Contact_Facsimile_Telephone: 508-547-2310 Contact_Electronic_Mail_Address: afarris@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time