Identification_Information: Citation: Citation_Information: Originator: Joseph F. Terrano Originator: Kathryn E.L. Smith Originator: Jonathan Pitchford Originator: Michael Archer Publication_Date: 20250527 Title: Location and elevation data for five sites in the coastal marsh at Grand Bay National Estuarine Research Reserve, Mississippi, from October 2020 to January 2023 Edition: 1.0 Geospatial_Data_Presentation_Form: tabular digital data Larger_Work_Citation: Citation_Information: Originator: Joseph F. Terrano Originator: Alisha M. Ellis Originator: Kathryn E.L. Smith Originator: Jonathan Pitchford Originator: Michael Archer Originator: Joseph M. Vargas Originator: Jonathan P. Griffiths Originator: Samuel M. Randall Originator: Matthew Virden Originator: Cheyenne S. Everhart Originator: Eric Sparks Publication_Date: 20250527 Title: Shore Proximal Marsh Sediment Deposition and Ancillary Data From Grand Bay National Estuarine Research Reserve, Mississippi, From October 2020 to January 2023 Edition: 1.0 Geospatial_Data_Presentation_Form: Multimedia presentation Series_Information: Series_Name: U.S. Geological Survey data release Issue_Identification: doi:10.5066/P13VT3ET Publication_Information: Publication_Place: St. Petersburg, FL Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P13VT3ET Description: Abstract: To better understand sediment deposition in marsh environments, scientists from the U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center (USGS-SPCMSC) selected five marsh study sites (Sites 5, 6, 7, 8, and 9) and four nearshore estuarine study sites (Sites 8S, 8D, 9S, 9D) along the Point Aux Chenes Bay shoreline of the Grand Bay National Estuarine Research Reserve (GNDNERR), Mississippi. This study builds on Smith and others (2020b) and includes datasets collected after the installation of a living shoreline (a subtidal sill [artificial reef]) that was completed in May 2021. Each marsh site consisted of five plots located along a transect perpendicular to the marsh-estuary shoreline at 5-meter (m) increments (5, 10, 15, 20, and 25 m from the shoreline). Each plot contained three to six net sedimentation tiles (NST) that were secured flush to the marsh surface using polyvinyl chloride (PVC) pipe. NST are an inexpensive and simple tool to assess short- and long-term deposition that can be deployed in highly dynamic environments without the compaction associated with traditional coring methods. The NST were deployed for three-month sampling periods, measuring sediment deposition from August 2021 to January 2023. Sediment deposited on the NST were processed to determine physical characteristics, such as deposition thickness, volume, wet weight/dry weight, grain size, and organic content (via loss-on-ignition [LOI]). For select sampling periods, ancillary data (water level, elevation, and vegetation) are also provided in this data release. The estuarine sites consisted of Site 8S (shallow; landward of the subtidal sill), 8D (deep; seaward side of the subtidal sill), as well as 9S and 9D (both sites established adjacent to 8S/8D and the subtidal sill). During select trips water parameters (e.g., waves, water level, and turbidity) were collected at each estuarine site to collect turbidity and wave data. Data presented in this data release were collected under three USGS Field Activities Numbers (FAN; one FAN per year) during thirteen sampling trips (alternate FAN; each sampling trip was assigned a unique alt FAN under the main FAN): 2021-320-FA (21CCT01, 21CCT03, 21CCT04, 21CCT05), 2022-302-FA (22CCT01, 22CCT02, 22CCT03, 22CCT04, 22CCT05, 22CCT06, 22CCT07, 22CCT08) and 2023-301-FA (23CCT01), however, every trip does not contain all data types. This data release also contains data for 2020-323-FA (20CCT02) that was collected as a special collection trip for Hurricane Delta. This data was collected before the subtidal sill was installed and is being published with this data release since pre-subtidal sill data was already published. Additional survey and data details are available from the U.S. Geological Survey Coastal and Marine Geoscience Data System (CMGDS) at, https://cmgds.marine.usgs.gov/. Users can look up USGS FANs in the CMGDS by replacing the FAN in the following url: https://cmgds.marine.usgs.gov/services/activity.php?fan=2022-302-FA. Data from a related NST study in the GNDNERR (Middle Bay and North Rigolets) can be found in Smith and others (2020a). Data collected from before the living shoreline (subtidal sill) installation can be found in Smith and others (2020b). For additional information on data processing and analysis, refer to the accompanying journal publication Smith and others (2025). Please read the full metadata for details on data collection, dataset variables, and data quality. Purpose: This data release contains elevation data for shorelines, top of scarp, bottom of scarp, cross shore elevation profiles, net sedimentation tile plots, sensor locations, and water level logger wells. Elevation data can be used in conjunction with in-situ sedimentation data to track lateral erosion and accretion of the marsh and estuary surface. Elevation data were collected using a using a Trimble R10 Global Navigation Satellite System (GNSS) set to 1 second (s) continuous topology for shorelines and 10 s static occupations for all other data points. GPS and elevation data are not be used for navigational purposes. Supplemental_Information: Data was collected through quarterly field visits. Each field visit was assigned a field activity number (FAN) and alternate FAN (alt-FAN) by the U.S Geological Survey (USGS). This publication contains data for field activities from: 1) 2020-323-FA (20CCT02; October 6-15 2020; pre- and post-Hurricane Delta), 2) 2021-320-FA (August 2021; 21CCT01, August 2021-September 2021; 21CCT03, September 2021-December 2021; 21CCT05), 3) 2022-302-FA (December 2021-February 2022; 22CCT01, February 2022-May 2022; 22CCT03, May 2022-August 2022; 22CCT05, August 2022-November 2022; 22CCT07), 4) 2023-301-FA (November 2022-January 2023; 23CCT01). NSTs were deployed on the start date and collected on the end date. Elevation data were collected and processed by the Grand Bay National Estuarine Research Reserve staff. This dataset, Grand_Bay_Elevation_Data.csv, was acquired in the North American Datum of 1983 State Plane Mississippi East Federal Information Processing Standard 2301 (NAD_1983_StatePlane_Mississippi_East_FIPS_2301) and transformed into the North American Datum of 1983 Universal Transverse Mercator Zone 16 North (NAD_1983_UTM_Zone_16N) for analysis and publishing. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20201006 Ending_Date: 20230131 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -88.44979142 East_Bounding_Coordinate: -88.41403484 North_Bounding_Coordinate: 30.42909700 South_Bounding_Coordinate: 30.33387307 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:977ea560-cf5f-45df-b440-604b76ba3efc Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: oceans Theme_Keyword: environment Theme_Keyword: elevation Theme_Keyword: geoscientificInformation Theme_Keyword: location Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: coastal processes Theme_Keyword: GPS measurement Theme_Keyword: unconsolidated deposits Theme_Keyword: geology Theme_Keyword: geomorphology Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: elevation Theme_Keyword: marsh Theme_Keyword: global positioning system Theme_Keyword: Net sedimentation tile Theme_Keyword: NST Theme_Keyword: sediment plate Theme_Keyword: sediment Place: Place_Keyword_Thesaurus: Geographic Names Information System Place_Keyword: State of Mississippi Place_Keyword: Point Aux Chenes Place: Place_Keyword_Thesaurus: None Place_Keyword: Grand Bay National Estuarine Research Reserve Place_Keyword: NERR Stratum: Stratum_Keyword_Thesaurus: None Stratum_Keyword: water Stratum_Keyword: surface Temporal: Temporal_Keyword_Thesaurus: None Temporal_Keyword: October 2020 to January 2023 Access_Constraints: No access constraints. Please see 'Distribution Information' for details. Use_Constraints: These data are marked with a Creative Common CC0 1.0 Universal License. These data are in the public domain and do not have any use constraints. Users are advised to read the dataset's metadata thoroughly to understand appropriate use and data limitations. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center Contact_Person: Joseph Terrano Contact_Position: Physical Scientist Contact_Address: Address_Type: Mailing Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Contact_Voice_Telephone: 727-502-8047 Contact_Facsimile_Telephone: 727-502-8182 Contact_Electronic_Mail_Address: jterrano@usgs.gov Data_Set_Credit: The authors would like to acknowledge the GNDNERR staff for their contributions in collecting and reviewing this data. Native_Data_Set_Environment: Environment as of Metadata Creation: Microsoft Windows 10 Enterprise Version 22H2 (Build 19045.3324, Windows Feature Experience Pack 1000.19041.1000.0); Esri ArcMap 10.8.1 and ArcPro 3.2.2.; Microsoft Excel for Microsoft 365 MSO (Version 2302, Build 16.0.16130.20806, 32-bit) Cross_Reference: Citation_Information: Originator: Kathryn E.L. Smith Originator: Joseph F. Terrano Originator: Nicole S. Khan Originator: Chelsea A. Stalk Publication_Date: 20200226 Title: Shore Proximal Sediment Deposition, Elevation, Turbidity, and Water Level Data for Four Sites in the Coastal Marsh at Grand Bay National Estuarine Research Reserve, Mississippi, From October 2016 Through October 2017 Publication_Information: Publication_Place: St. Petersburg, Florida Publisher: U.S. Geological Survey Other_Citation_Details: Smith and others (2020a) Online_Linkage: https://doi.org/10.5066/P9BFR2US Cross_Reference: Citation_Information: Originator: Kathryn E.L. Smith Originator: Joseph F. Terrano Originator: Jonathan Pitchford Originator: Michael Brochard Originator: Joseph M. Vargas Originator: Isabelle D. Atchia Originator: Cheyenne S. Everhart Originator: Christopher G. Smith Publication_Date: 20200713 Title: Shore Proximal Marsh Sediment Deposition and Ancillary Data From Grand Bay National Estuarine Research Reserve, Mississippi, From July 2018 to January 2020 Edition: 2.0 (June 2023) Publication_Information: Publication_Place: St. Petersburg, Florida Publisher: United States Geological Survey-St. Petersburg Coastal and Marine Science Center Other_Citation_Details: Smith and others (2020b) Online_Linkage: https://doi.org/10.5066/P9ONI8PS Cross_Reference: Citation_Information: Originator: Kathryn E.L. Smith Originator: Jonathan L. Pitchford Originator: Eric L. Sparks Originator: Michael J. Archer Originator: Matthew F. Virden Originator: Joseph F. Terrano Originator: Christopher G. Smith Publication_Date: 20250612 Title: Evaluating the influence of constructed subtidal reefs on marsh shoreline erosion, sediment deposition, and wave energy Series_Information: Series_Name: Estuaries and Coasts Issue_Identification: Volume 48, Article 128 Publication_Information: Publication_Place: Online Publisher: Springer Nature Other_Citation_Details: Smith and others (2025) Online_Linkage: https://doi.org/10.1007/s12237-025-01564-7 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The positional accuracy of the sample locations has a horizontal error of +/-8 millimeters (mm) + 0.5 parts per million (ppm) root mean square (RMS) and a vertical error of +/-15 mm + 0.5 ppm RMS. Some points, such as the water level well elevations, have apparent inconsistencies that were manually identified during initial data checks. These small inconsistencies were likely due to the real-time Kinematic Positioning (RTK) survey rod to sinking into the soft estuarine surface. Shoreline locations were surveyor dependent, and any inaccuracies were likely due to the surveyor misinterpreting the shoreline location in areas without a defined scarp or with sparse vegetation. At least two users experienced with the ArcGIS software client and familiar with the study checked the elevation and positional data to identify any data that was potentially erroneous. Erroneous data was either labeled as inaccurate or removed from the final published data file. Users are advised to read the rest of the metadata before using data. No data values are represented as blank cells and are intentionally left blank as there are no values associated with the data. Logical_Consistency_Report: Position and elevation data at each sample site were recorded with Trimble R10 GNSS equipment, set to 1 s continuous topo for shorelines and 10 s static occupations for all other data points. At the start of each survey, a baseline mark was collected at the same location at the Grand Bay NERR headquarters. During survey 21CCT01, the plots were reestablished for the post-reef study at the current 5, 10, 15, 20, and 25-meter distances from the shoreline. Since the "old" (pre-reef) tile plot locations were eroded, elevations were still collected so that it could be compared past data collections. Past (pre-reef) elevation data can be found at Smith and others (2020b). Additional tile plot information can be found in the GB_Net_Sedimentation_Tile_Data_2020_2023.zip file of this data release. Completeness_Report: This dataset includes the locations of elevation points collected from shorelines, top of scarp, bottom of scarp, cross shore elevation profiles, net sedimentation tile plots, water level logger wells, and sensor sites that were collected from Grand Bay, Mississippi from October 2020, and August 2021 to January 2023. The October 2020 data was collected pre and post hurricane Delta. Data from August 2021 to January 2023 was collected as part of the post-reef install study. This dataset is considered complete for the information presented, as described in the abstract section. Users are advised to read the rest of the metadata before using data. No data values are represented as blank cells and are intentionally left blank as there are no values associated with the data. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The horizontal positional accuracy is +/-8 mm + 0.5 ppm RMS. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: The vertical positional accuracy is +/-15 mm + 0.5 ppm RMS. Lineage: Process_Step: Process_Description: A Trimble R10 GNSS and TSC3 data collector were used to collect global positioning system (GPS) coordinates and elevations for each survey. Both the R10 and TSC3 were mounted onto a 2-m graphite rod with a mounted foot to keep the rod on the surface of the marsh. The projected coordinate system (NAD_1983_StatePlane_Mississippi_East_FIPS_2301) was used for data collection. Elevations were collected in meters in the North American Vertical Datum of 1988 (NAVD88) GEOID 12A. The 'Continuous Topo' tool was used when capturing shoreline features, so a point was collected every 5 second (s) along the shoreline. Prior to point collection, the rod foot was placed on the marsh surface until the point was captured. Next the surveyor took 2 to 4 steps before setting the rod down for the next point to be captured, making sure to firmly seat the rod on the marsh platform prior to data capture. Shoreline points were collected from the vegetation line nearest to the erosional edge, which also represented the top of scarp (TOS). For other points collected (for example, bottom of scarp, NST plots, etc.), the 'Measure Points' tool was used with an occupation time of 10 s for each point collected. To capture the position of NST plots, a point was taken on the outside edge of each PVC marker (each plot has two corner markers). GPS points for the TOS generally followed the vegetation line closest to the erosional edge. The bottom of scarp (BOS) generally followed the first slope break from the erosional edge. BOS, TOS, and tile plots (plots) were coded as such in the TSC3 during data collection to help identify geomorphic features when subsequently viewing or analyzing the data. Data were exported from the TSC3 as a shapefile (.shp) for each survey. The .shp was pulled from the export folder and brought into ArcGIS software where the projection was defined as NAD_1983_StatePlane_Mississippi_East_FIPS_2301. Points were checked for positional and descriptive accuracy. A notes field was added to denote errors or written locations of where the elevation measurement was collected. A "Start of profile" note was added to distinguish the shoreline point closest to the center of the NST plots. Shoreline points within a 10-meter radius were noted as "0 Plot" and used to calculate the shoreline elevation closest to the NST plots. Process_Date: 2023 Source_Produced_Citation_Abbreviation: shapefiles Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Jonathan Pitchford Contact_Position: Stewardship Coordinator Contact_Address: Address_Type: mailing and physical Address: 6005 Bayou Heron Road City: Moss Point State_or_Province: MS Postal_Code: 39562 Country: USA Contact_Voice_Telephone: 228-523-4009 Contact_Electronic_Mail_Address: jonathan.pitchford@dmr.ms.gov Process_Step: Process_Description: Elevation data were sent to the USGS-SPCMSC as shapefiles (.shp). Within ArcGIS, the data were reprojected from NAD_1983_StatePlane_Mississippi_East_FIPS_2301 into NAD_1983_UTM_Zone_16N, using the "project" geoprocessing tool. Data from all trips were merged into a single shapefile, and fields were then renamed for consistency with previous publications from this study area. All data we checked for accuracy and consistency with past trips. The final shapefile was exported into tabular digital data (Comma Separated Values [CSV, .csv] format). Source_Used_Citation_Abbreviation: shapefiles Process_Date: 2023 Source_Produced_Citation_Abbreviation: Grand_Bay_Elevation_Data_20CCT02_23CCT01.csv Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Joseph Terrano Contact_Position: Physical Scientist Contact_Address: Address_Type: mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-502-8047 Contact_Electronic_Mail_Address: jterrano@usgs.gov Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Point Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 4777 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 16 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -87.0 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: D_North_American_1983 Ellipsoid_Name: GRS_1980 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257222101 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Grand_Bay_Elevation_Data_20CCT02_23CCT01.csv Entity_Type_Definition: CSV file containing attribute information associated with location and elevation data collected in Grand Bay, Mississippi during surveys in 2020, 2021, 2022, and 2023. Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: Sample_ID Attribute_Definition: Sample identification number. Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Character string. Sample IDs listed within the table used the naming convention Alt_FAN-GBXYY-ZZ, where Alt_FAN represents the USGS alternate (abbreviated) field activity number (20CCT02, 21CCT01, 21CCT03, 21CCT05, 22CCT01, 22CCT03, 22CCT05, 22CCT07, 23CCT01), GB denotes samples are from Grand Bay, X is the site number (5, 6, 7, 8, or 9), YY is the sample number, ZZ denotes the code where the elevation was collected from (see "type" field). For example, sample ID "21CCT01-GB800-05T" is from the 21CCT01 trip from Site 8 measuring the elevation of the 05-meter net sediment tile plot. Shoreline sample IDs have further specified sample numbers that follow ZZ. These sample numbers are used to distinguish samples of the same type collected at a specific site. For example, sample ID "21CCT01-GB800-SL-1", "21CCT01-GB800-SL-2" are from the 21CCT01 trip from Site 8 measuring two shoreline locations in sequential order. GPS positions outside of net sedimentation tile sites are called "Site 0" (such as the NERR office) so sample IDs are FAN-GB000-NERR. Attribute: Attribute_Label: FAN Attribute_Definition: USGS field activity number (FAN) assigned to each sample collection trip. Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Field activity numbers were assigned by the USGS to track field collection of samples. The FAN consists of YYYY-XXX-FA, with YYYY being the 4-digit year, XXX being the trip number, and FA representing that it is a field activity. There are four FANs associated with this dataset: 2020-323-FA, 2021-320-FA, 2022-302-FA, and 2023-301-FA. Attribute: Attribute_Label: Alt_FAN Attribute_Definition: Alternate (abbreviated) FAN assigned each collection trip. Several alternate FANs can fall under one overarching FAN. Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Alternate FANs were assigned by the USGS and are YYCCTXX, where YY is the 2-digit year, CCT stands for coastal change and transport (a USGS project identifier), and XX is the trip number. For example, 21CCT01 was from 2021 sample collection trip 01. Attribute: Attribute_Label: Site Attribute_Definition: Site number. Sites 5-9 are NST sites where data was regularly collected. Sites called 8.1 and 9.1 are estuarine sensor locations offshore of the marsh sites 8 and 9. Site 0 was used for data not collected at an NST site. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 9.1 Attribute: Attribute_Label: Date (YYYYMMDDDD) Attribute_Definition: Date the elevations were collected from Grand Bay in YYYYMMDD format. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 20201006 Range_Domain_Maximum: 20230131 Attribute: Attribute_Label: Type Attribute_Definition: Codes used to identify what object was measured for elevation. Attribute_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: NERR Enumerated_Domain_Value_Definition: Reference elevation collected at the Grand Bay NERR. Enumerated_Domain_Value_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: WLS Enumerated_Domain_Value_Definition: Sediment surface elevation at the water level staff gauge. Enumerated_Domain_Value_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: WLG Enumerated_Domain_Value_Definition: Sediment surface elevation at the base of the water level logger well. Enumerated_Domain_Value_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 05T Enumerated_Domain_Value_Definition: Elevation at the 5-meter net sedimentation tile plot. Enumerated_Domain_Value_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 10T Enumerated_Domain_Value_Definition: Elevation at the 10-meter net sedimentation tile plot. Enumerated_Domain_Value_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 15T Enumerated_Domain_Value_Definition: Elevation at the 15-meter net sedimentation tile plot. Enumerated_Domain_Value_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 20T Enumerated_Domain_Value_Definition: Elevation at the 20-meter net sedimentation tile plot. Enumerated_Domain_Value_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 25T Enumerated_Domain_Value_Definition: Elevation at the 25-meter net sedimentation tile plot. Enumerated_Domain_Value_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: AT Enumerated_Domain_Value_Definition: Elevation of the base of the In-Situ Aqua TROLL 600 sensor. Enumerated_Domain_Value_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: SL Enumerated_Domain_Value_Definition: Elevation of the shoreline. Enumerated_Domain_Value_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: BOS Enumerated_Domain_Value_Definition: Elevation at the bottom of the shoreline scarp. Enumerated_Domain_Value_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: TOS Enumerated_Domain_Value_Definition: Elevation at the top of the shoreline scarp. Enumerated_Domain_Value_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: ET Enumerated_Domain_Value_Definition: Elevation profile transect that extends from the estuary into the marsh. Enumerated_Domain_Value_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: GB Enumerated_Domain_Value_Definition: Elevation of marsh core sites. Enumerated_Domain_Value_Definition_Source: USGS Attribute: Attribute_Label: Detail_name Attribute_Definition: Detailed name of the elevation point. Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Detailed name of the elevation point that is represented in the "Type" column. Attribute: Attribute_Label: SL_number Attribute_Definition: Value used to order the shoreline elevation points as they were collected. This column only applies to points with the type "SL". If the Type is not "SL", the cell is blank, which denotes a null value. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 996 Attribute: Attribute_Label: Easting (NAD83 UTM 16N) Attribute_Definition: Easting coordinate of the elevation collection location in the North American Datum of 1983 (NAD83) Universal Transverse Mercator (UTM) Zone 16N projected coordinate system. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 360662.0792 Range_Domain_Maximum: 364110.7652 Attribute_Units_of_Measure: Meters Attribute: Attribute_Label: Northing (NAD83 UTM 16N) Attribute_Definition: Northing coordinate of the elevation collection location in the North American Datum of 1983 (NAD83) Universal Transverse Mercator (UTM) Zone 16N projected coordinate system. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3356667.252 Range_Domain_Maximum: 3367199.712 Attribute_Units_of_Measure: Meters Attribute: Attribute_Label: Long (NAD83) Attribute_Definition: Longitude of the elevation collection location in the North American Datum of 1983 (NAD83). Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -88.44979142 Range_Domain_Maximum: -88.41403484 Attribute_Units_of_Measure: Decimal Degrees Attribute: Attribute_Label: Lat (NAD83) Attribute_Definition: Latitude of the elevation collection location in the North American Datum of 1983 (NAD83). Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 30.33387307 Range_Domain_Maximum: 30.429097 Attribute_Units_of_Measure: Decimal degrees Attribute: Attribute_Label: Elevation Attribute_Definition: Elevation, in meters, in the North American Vertical Datum of 1988 (NAVD88) GEOID 12A. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -2.46111 Range_Domain_Maximum: 8.13712 Attribute_Units_of_Measure: Meters Attribute: Attribute_Label: Notes Attribute_Definition: Notes about the GPS data collection. Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Written locations of where the elevation measurement was collected, additional point information, or notations for other analyses. Points labeled "start of plot" are the closest shoreline point to the tile plots selected by visual assessment. Points labeled "0 Plot" were used to calculate the average elevation of the shoreline closest to the tile plots. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center Contact_Person: USGS SPCMSC Data Management Contact_Address: Address_Type: mailing and physical Address: 600 4th Street South City: Saint Petersburg State_or_Province: FL Postal_Code: 33701 Country: United States Contact_Voice_Telephone: 727-502-8000 Contact_Electronic_Mail_Address: gs-g-spcmsc_data_inquiries@usgs.gov Resource_Description: GB_Elevation_Data_2020_2023.csv Distribution_Liability: Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), 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. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: comma-delimited text Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P13VT3ET/data/GB_Elevation_Data_2020_2023.zip Fees: None Metadata_Reference_Information: Metadata_Date: 20250618 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center Contact_Person: USGS SPCMSC Data Management Contact_Address: Address_Type: mailing and physical Address: 600 4th Street South City: Saint Petersburg State_or_Province: FL Postal_Code: 33701 Country: United States Contact_Voice_Telephone: 727-502-8000 Contact_Electronic_Mail_Address: gs-g-spcmsc_data_inquiries@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998