Metadata: Identification_Information: Citation: Citation_Information: Originator: Kate V. Ackerman Originator: Zafer Defne Originator: Neil K. Ganju Publication_Date: 20210929 Title: Mean tidal range of marsh units in Massachusetts salt marshes Edition: 1.0 Geospatial_Data_Presentation_Form: Vector Digital dataset (Polygon) Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P97E086F Publication_Information: Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: https://doi.org/10.5066/P97E086F Online_Linkage: https://www.sciencebase.gov/catalog/item/60f99371d34e3ccd82fe3fd7 Larger_Work_Citation: Citation_Information: Originator: Kate V. Ackerman Originator: Zafer Defne Originator: Neil K. Ganju Publication_Date: 2021 Title: Geospatial Characterization of Salt Marshes for Massachusetts Edition: 1.0 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P97E086F Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: Suggested citation: Ackerman, K.V., Defne, Z., and Ganju, N.K., 2021, Geospatial Characterization of Salt Marshes for Massachusetts: U.S. Geological Survey data release, https://doi.org/10.5066/P97E086F. Online_Linkage: https://doi.org/10.5066/P97E086F Online_Linkage: https://www.sciencebase.gov/catalog/item/60f79c4dd34e9143a4ba4e04 Description: Abstract: This data release contains coastal wetland synthesis products for Massachusetts, developed in collaboration with the Massachusetts Office of Coastal Zone Management. Metrics for resiliency, including unvegetated to vegetated ratio (UVVR), marsh elevation, and tidal range are calculated for smaller units delineated from a digital elevation model, providing the spatial variability of physical factors that influence wetland health. The U.S. Geological Survey has been expanding national assessment of coastal change hazards and forecast products to coastal wetlands with the intent of providing Federal, State, and local managers with tools to estimate the vulnerability and ecosystem service potential of these wetlands. For this purpose, the response and resilience of coastal wetlands to physical factors need to be assessed in terms of the ensuing change to their vulnerability and ecosystem services. Purpose: The purpose of this shapefile is to calculate mean tidal range in each marsh unit. Analysis of mean tidal range is part of a comprehensive assessment to identify the factors and their weights in determining the vulnerability and resiliency of salt marshes. Biomass production is positively correlated with mean tidal range in salt marshes along the Atlantic coast of the United States. Recent studies support the idea that enhanced stability of the marshes can be attributed to increased vegetative growth due to increased tidal range. This dataset displays the spatial variation of mean tidal range (i.e., mean range of tides, MN) in Massachusetts salt marsh complexes. Mean tidal range, MN, was based on the calculated difference in height between mean high water (MHW) and mean low water (MLW) using the VDatum (v.4.1.2) database (http://vdatum.noaa.gov/). Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2021 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -71.2265 East_Bounding_Coordinate: -69.9299 North_Bounding_Coordinate: 42.8719 South_Bounding_Coordinate: 41.2423 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: oceans Theme_Keyword: inlandWaters Theme_Keyword: environment Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: geospatial datasets Theme_Keyword: wetland ecosystems Theme_Keyword: wetland functions Theme_Keyword: coastal ecosystems Theme_Keyword: coastal processes Theme_Keyword: tides (oceanic) Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: salt marsh Theme_Keyword: vegetation Theme_Keyword: marsh health Theme_Keyword: estuary Theme_Keyword: tidal range Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:60f99371d34e3ccd82fe3fd7 Place: Place_Keyword_Thesaurus: None Place_Keyword: United States Place_Keyword: Massachusetts Place_Keyword: Massachusetts Bay Place_Keyword: Cape Cod Bay Place_Keyword: Buzzards Bay Place_Keyword: Plum Island Place_Keyword: Cape Cod Place_Keyword: Martha's Vineyard Place_Keyword: Nantucket Place_Keyword: Parker River National Wildlife Refuge Place_Keyword: Parker River/Essex Bay Area of Critical Environmental Concern Place_Keyword: Great Marsh Area of Critical Environmental Concern Place_Keyword: Sandy Neck/Barnstable Area of Critical Environmental Concern Place_Keyword: Wellfleet Harbor Area of Critical Environmental Concern Place_Keyword: Pleasant Bay Area of Critical Environmental Concern Place_Keyword: Cape Cod National Seashore Place_Keyword: Essex Bay Place_Keyword: Merrimack River Place_Keyword: Ipswich River Place_Keyword: Danvers River Place_Keyword: Pines River Place_Keyword: Neponset River Place_Keyword: Weymouth Fore River Place_Keyword: Weymouth Back River Place_Keyword: Scituate Harbor Place_Keyword: North River Place_Keyword: South River Place_Keyword: Duxbury Bay Access_Constraints: None Use_Constraints: The mean tidal range for each marsh unit is defined for scientific research purposes and should not be used as a sole source of reference for any regulations and policy making. 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 source of this information. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Kate Ackerman Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543 Country: US Contact_Voice_Telephone: 508-548-8700 x2331 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: kackerman@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: https://www.sciencebase.gov/catalog/file/get/60f99371d34e3ccd82fe3fd7/?name=MN_MA_Browse.png Browse_Graphic_File_Description: Graphic that shows mean tidal range of conceptual marsh units of Massachusetts salt marshes. Browse_Graphic_File_Type: PNG Native_Data_Set_Environment: Environment as of Metadata Creation: Microsoft 10 Version 6.2 (Build 9200); Esri ArcGIS 10.7.1 (Build 11595) Service Pack N/A (Build N/A) Cross_Reference: Citation_Information: Originator: NOAA Publication_Date: 2020 Title: VDatum (v. 4.1.2) Edition: version 4.1.2 Publication_Information: Publication_Place: Silver Spring, MD Publisher: NOAA Online_Linkage: http://vdatum.noaa.gov Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Marsh units and water and land boundaries inherit their horizontal accuracy from the accuracy of the source data, the conceptual marsh units, and their vertical accuracy from the elevation datasets (USGS CoNED, USGS 1-meter DEM, and USGS NED). Mean tidal range is calculated from the VDatum database, then interpolated on a raster surface and averaged at each marsh unit. If a marsh unit does not overlap with any raster cell center, it is assigned the value of the raster cell with the largest overlap. Logical_Consistency_Report: Polygons do not overlap and mean tidal range is positive. During processing of conceptual marsh units, small polygons (less than 9 m^2) were assumed to be marginal and were assigned the classification from the surrounding majority value. In one area (around marsh unit 6125), there are marsh units that have straight lines for boundaries; this is due to larger areas of hydro-flattened bathymetry/elevation values that do not allow the basin analysis to identify ridge lines between basins. These marsh units have a flag that shows that the hydro-flattened area of the marsh unit is greater than 25 percent of the marsh unit area. Completeness_Report: The results are specific to the marsh polygons as defined within the boundaries of Massachusetts salt marshes. Sliver polygons of open salt water along the marsh edges may also be included in some instances as a result of geoprocessing. In some marsh units there are small sliver gaps due to coupling of artifacts of the NWI (e.g., NWI polygons for ditches that are classified as riverine) and geoprocessing when the marsh polygons were closer than 10 meters at a specific section that is followed by a wider distance (e.g., access roads, fringing forests, etc.). The effect of these slivers on the calculations is negligible. For example, in marsh units 5958 and 5965 the sliver gaps are a result of the geoprocessing steps that remove riverine polygons. Other examples include marsh units 165, 308, 648, 3441, 5613. A detailed on-the-ground analysis of a single site may result in a different interpretation of the wetland and marsh unit boundaries. Occasionally, marsh units are retained in this dataset even though the imagery displayed extreme change (e.g., partially or completely converted to water) from the NWI wetland delineation. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Horizontal accuracy for the polygon boundaries is inherited from the source layer, the conceptual marsh units, and is considered to be +/- 6 meters. The point cloud used for calculating tidal range with VDatum had a 0.0005 arc degree (~50-meter) resolution that was interpolated over a 0.0001 arc degree raster prior to clipping and calculating the mean value for each marsh unit. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: The maximum cumulative uncertainty for the Maine, New Hampshire, Massachusetts - Gulf of Maine operational VDatum region is given as 0.134 meters. See Estimation of Vertical Uncertainties in VDatum for more information (https://vdatum.noaa.gov/docs/est_uncertainties.html). Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Ackerman, K.V., Defne, Z., and Ganju, N.K. Publication_Date: 2021 Title: Conceptual marsh units of Massachusetts salt marshes Geospatial_Data_Presentation_Form: Vector Digital Dataset (Polygon) Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: https://www.sciencebase.gov/catalog/item/60f992fcd34e3ccd82fe3fbf Type_of_Source_Media: Digital Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2021 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: CMU_MA Source_Contribution: Used conceptual marsh units to delineate marsh unit boundaries and areas of vegetation. Process_Step: Process_Description: This process step and all subsequent process steps were performed by the same person, Kate Ackerman, in ArcMap (ver. 10.7.1) using tools from ArcToolbox, unless otherwise stated. For complex operations, names of specific tools used are given in CAPITAL letters (any critical parameters used are given in parentheses, separated by a semicolon, immediately after the tool name). The input and output file names are provided in [square brackets] when necessary. Units for length and area calculations are meters (m) and square meters (m^2) unless otherwise stated. Establish marsh unit boundaries. Dissolve the vegetated and unvegetated classes in each marsh unit to have only one class for each marsh unit. DISSOLVE(Input features=[CMU_MA.shp]; Dissolve field=FID_CMU; Statistics field=ATOT_M2 and FLG, with Statistics type= First). PROJECT(Input coordinate system=WGS 1984 Web Mercator Auxiliary Sphere; Output coordinate system=GCS_NAD_1983_2011) the feature dataset to obtain dissolved marsh units [mu_diss.shp]. The FLG field identifies anomalous marsh units based on the absence of vegetation, the elevation, surface area, and tidal range extrapolation. The flags are calculated in their respective shapefile (i.e., elevation flags are calculated in the elevation shapefile). Set FLG to: (-1) no vegetated area in the marsh unit; (-10) marsh unit elevation higher than the 99.8 percentile; (-100) marsh unit elevation less than the 0.2 percentile; (-200) greater than 25 percent of the marsh unit elevation is hydro-flattened; (-1000) marsh unit surface area less than 900 m^2; (-10000) mean tidal range of marsh unit is extrapolated; and (0) no flag. Combination of negative values indicates a combination of flags; for example, -1001 indicates no vegetated area and area less than 900 m^2. Source_Used_Citation_Abbreviation: CMU_MA.shp Process_Date: 2021 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Kate Ackerman Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543 Country: US Contact_Voice_Telephone: 508-548-8700 x2331 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: kackerman@usgs.gov Process_Step: Process_Description: Generate a point cloud of coordinates indicating calculation locations for the mean range of tides (MN). a) CREATE CONSTANT RASTER with 50 m spacing (Constant value= 0; Output cell size: 50) that surpasses the marsh unit boundaries. b) RASTER TO POINT to generate an array of points [pts.shp]. PROJECT [pts.shp] to GCS_NAD_1983_2011. Calculate latitude and longitude of each point [pts.shp]. Export the shapefile to a text file (TABLE TO TABLE (output table= [Tidal_Points.txt]). This text file includes latitude, longitude and height (set to zero). Process_Date: 2021 Source_Produced_Citation_Abbreviation: Tidal_Points.txt Process_Step: Process_Description: Calculate Mean Range of Tides (MN) using the VDatum (v.4.1.2) database covering this region. Mean range of tides (MN) = mean high water level (MHW)- mean low water level (MLW) in the VDatum database. Interpolate MN to the point dataset. a) Input point cloud file [Tidal_Points.txt] to VDatum. Set the HORIZONTAL INFORMATION (Reference Frame (NAD83 (2011)), Coordinate System (Geographic)) to be the same for the source and target. Set the VERTICAL INFORMATION (Source Reference Frame: MHW (meters); Target Reference Frame: MLW (meters)). Choose ASCII FILE CONVERSION (exclude NODATA points) and save output [MN.txt]. The resulting text file includes latitude, longitude and MN. Source_Used_Citation_Abbreviation: Tidal_Points.txt Process_Date: 2021 Source_Produced_Citation_Abbreviation: MN.txt Process_Step: Process_Description: Create a raster surface dataset from the feature points. a) Convert points from [MN.txt] to a shapefile in ArcMap using MAKE XY EVENT LAYER (Z field= Value; Spatial Reference: GCS_NAD_1983_2011; Layer Name: MN_lyr) and COPY FEATURES [MN.shp]. b) Create a raster surface with inverse distance weighting (Spatial Analyst toolbox). IDW(Output Cell Size=0.0001 degree; Power=2; Search Radius=Variable; Number of Points=12; Input barrier polyline features – if necessary) to obtain [MN_raster_idw.tif]. After running this tool, it may be apparent that input barrier polyline feature(s) need to be created to separate areas of unrelated tidal range data (e.g., where values from one body of water cross land to another body of water); in those cases, this tool was re-run with the input barrier polyline features specified. Input barrier polyline features were created on Cape Cod, Nantucket and adjacent to the Merrimack River. Process_Date: 2021 Source_Produced_Citation_Abbreviation: MN_raster_idw.tif Process_Step: Process_Description: Clip the raster to marsh boundaries. A buffer zone is created around the marsh boundaries to facilitate alternative interpolation and clipping options in future studies. a) Create 300 m buffer around the marsh units polygons [mu_diss.shp] to create a clipping mask [mu_buff300m.shp]. BUFFER(Side type= Full; Method =Geodesic; Dissolve type= All). b) Clip the raster [MN_raster_idw.tif] with the clipping mask. EXTRACT BY MASK (Mask= [mu_diss.shp]) to obtain [MN_IDW_MU.tif]. Source_Used_Citation_Abbreviation: mu_diss.shp Source_Used_Citation_Abbreviation: MN_raster_idw.tif Process_Date: 2021 Source_Produced_Citation_Abbreviation: MN_IDW_MU.tif Process_Step: Process_Description: Calculate mean tidal range value for each marsh unit and flag the marsh units that have tide range values that are extrapolated. a) ZONAL STATISTICS AS TABLE(Feature Zone Data=[mu_diss.shp]; zone field=FID_CMU; Value Raster=[MN_IDW_MU.tif]; Output Table=mu; Statistics type=MEAN) b) JOIN FIELD(Input table=[mu_diss.shp]; Input join field=FID_CMU; Join Table=mu; Output join field=FID_CMU; Join Field= MEAN). Export dataset as a shapefile [mu_MN_MA.shp] and change “MEAN” to “MN.” c)Flag marsh units that are greater than 25 m from the VDatum data. SELECT BY LOCATION (Input feature= [mu_diss.shp]; Relationship=within_a_distance; Selecting Features: MN.shp; Search distance= 25m; Selection type= New_Selection; Invert Spatial Relationship). Assign the marsh units with a distance greater than 25 m a “flag” of -10000. d) Rearrange field names and change the projection for better performance of web services with online base maps. PROJECT(Output coordinate system=WGS 1984 Web Mercator Auxiliary Sphere) the feature dataset to obtain the final mean tidal range dataset [mu_MN_MA.shp]. Source_Used_Citation_Abbreviation: MN_IDW_MU.tif Process_Date: 2021 Source_Produced_Citation_Abbreviation: mu_MN_MA.shp Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: G-polygon Point_and_Vector_Object_Count: 6580 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: WGS 1984 Web Mercator Auxiliary Sphere (Esri full name: WGS_1984_Web_Mercator_Auxiliary_Sphere) Map_Projection_Parameters: False_Easting: 0.0 False_Northing: 0.0 Latitude_of_Projection_Origin: 0.0 Longitude_of_Central_Meridian: 0.0 Standard_Parallel: 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: D_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: mu_MN_MA.shp Attribute Table Entity_Type_Definition: Table containing attribute information associated with the dataset. Entity_Type_Definition_Source: 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: Coordinates defining the features. Attribute: Attribute_Label: FID_CMU Attribute_Definition: Unique whole numbers used to identify each conceptual marsh unit. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 6579 Attribute_Units_of_Measure: none Attribute: Attribute_Label: ATOT_M2 Attribute_Definition: Total surface area of a marsh unit. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 185.979591105 Range_Domain_Maximum: 1446641.95436 Attribute_Units_of_Measure: m^2 Attribute: Attribute_Label: AVEG_M2 Attribute_Definition: Surface area of the vegetated part of a marsh unit. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.0 Range_Domain_Maximum: 1257718.49982 Attribute_Units_of_Measure: m^2 Attribute: Attribute_Label: MN Attribute_Definition: Mean tidal range in meters averaged over a marsh unit. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.153854031465 Range_Domain_Maximum: 3.12283753728 Attribute_Units_of_Measure: m Attribute: Attribute_Label: FLG Attribute_Definition: Marsh unit flag indicating anomalous marsh units based on absence of vegetation, elevation, surface area and tidal range extrapolation. FLG values indicate: (-1) no vegetated area in the marsh unit; (-10) marsh unit elevation higher than the 99.8 percentile; (-100) marsh unit elevation less than the 0.2 percentile; (-200) greater than 25 percent of the marsh unit elevation is hydro-flattened; (-1000) marsh unit surface area less than 900 m^2; (-10000) mean tidal range of marsh unit is extrapolated; and (0) no flag. Combination of negative values indicates a combination of flags. For example, -1001 indicates no vegetated area and area less than 900 m^2. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -11010 Range_Domain_Maximum: 0 Overview_Description: Entity_and_Attribute_Overview: In this dataset, tidal range for each conceptual salt marsh unit in Massachusetts salt marshes has been calculated based on a 0.0005 arc degrees interpolated VDatum dataset. Decimal values in the attribute table are a result of double precision calculations while significant digits are considered in defining the attribute measurement resolutions. Therefore, the smallest unit increment for area and tidal range values is assumed to be 1 meter and 0.01 meter, respectively. Entity_and_Attribute_Detail_Citation: USGS 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 Contact_Voice_Telephone: 1-888-275-8747 Contact_Electronic_Mail_Address: sciencebase@usgs.gov Resource_Description: mu_MN_MA.shp (and other shapefile components), browse graphic (MN_MA_Browse.png), and CSDGM metadata in XML format. Distribution_Liability: Although these data have been processed successfully on a computer system at the U.S. Geological Survey (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. Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Not for navigational use. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: shapefile Format_Version_Number: ArcGIS 10.7.1 Format_Information_Content: This dataset contains a polygon shapefile and its components and metadata in xml format. Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/60f99371d34e3ccd82fe3fd7 Network_Resource_Name: https://www.sciencebase.gov/catalog/item/60f99371d34e3ccd82fe3fd7 Network_Resource_Name: https://doi.org/10.5066/P97E086F Access_Instructions: The first link in network resources is to download data directly. The second link points to a landing page with metadata and data. The third link is to the main page of the data release. Digital_Form: Digital_Transfer_Information: Format_Name: WMS Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalogMaps/mapping/ows/60f99371d34e3ccd82fe3fd7?service=wms&request=getcapabilities&version=1.3.0 Access_Instructions: The link in network resources points to the Web Mapping Services (WMS) end point. Digital_Form: Digital_Transfer_Information: Format_Name: WFS Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalogMaps/mapping/ows/60f99371d34e3ccd82fe3fd7?service=wfs&request=getcapabilities&version=1.0.0 Access_Instructions: The link in network resources points to the Web Feature Service (WFS) end point. Fees: None. No fees are applicable for obtaining the dataset. Metadata_Reference_Information: Metadata_Date: 20210929 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Kate V. Ackerman Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing address Address: 384 Woods Hole Rd City: Woods Hole State_or_Province: MA Postal_Code: 02543 Country: US Contact_Voice_Telephone: 508-548-8700 x2331 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: kackerman@usgs.gov Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998