Seafloor Elevation and Volume Change along the Upper Florida Keys reef tract: 1934 to 2002 and 2002 to 2016

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Selena A. Johnson
Originator: David G. Zawada
Originator: Kimberly K. Yates
Publication_Date: 20260202
Title:
Seafloor Elevation and Volume Change along the Upper Florida Keys reef tract: 1934 to 2002 and 2002 to 2016
Geospatial_Data_Presentation_Form: tabular digital data, vector digital data
Larger_Work_Citation:
Citation_Information:
Originator: Selena A. Johnson
Originator: David G. Zawada
Originator: Kimberly K. Yates
Publication_Date: 20260202
Title:
Seafloor Elevation and Volume Change along the Upper Florida Keys Reef Tract: 1934 to 2002 and 2002 to 2016
Series_Information:
Series_Name: U.S. Geological Survey data release
Issue_Identification: doi:10.5066/P1VGATCF
Publication_Information:
Publication_Place: St. Petersburg, FL
Publisher:
U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center
Online_Linkage: https://doi.org/P1VGATCF
Description:
Abstract:
Coral reefs serve as natural barriers that protect adjacent shorelines from coastal hazards such as storms, waves, and erosion. The U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center (SPCMSC) conducted research to quantify the combined effect of all constructive and destructive processes on modern coral reef ecosystems by measuring regional-scale changes in seafloor elevation. USGS staff conducted research to quantify bathymetric changes in the Northern Florida Keys from Triumph Reef to Pickles Reef during two time periods, 1934 to 2002, and 2002 to 2016, within a 234.2 square-kilometer area. USGS staff calculated changes in seafloor elevation for both time periods using historical hydrographic surveys (H-sheets) collected by the U.S. Coast and Geodetic Survey (USC&GS) in 1934 and 1935, light detection and ranging (lidar)-derived digital elevation models (DEMs) acquired by the USGS in 2001 and 2002, and lidar-derived DEMs acquired by the National Oceanic and Atmospheric Administration (NOAA) in 2016 and 2017. An elevation change analysis for the two time periods was performed to quantify and map impacts to seafloor elevation for the full study site and 3 sub-regions: Upper, Middle, and Lower. Elevation and volume change statistics were also computed for eleven habitat types found within the study area. For more information about the methods used in this study, refer to Yates and others (2017) and Johnson and others (2026).
Purpose:
These data were used to provide a comprehensive assessment of the combined effect of all processes influencing seafloor accretion and erosion by measuring changes in seafloor elevation and volume for a coral reef ecosystem in the Florida Keys over the last several decades. This study is a follow-on study to previous work published in Yates and others (2017) and follows the same data processing steps as detailed in that publication.
Supplemental_Information:
All data sources and descriptions used in the creation of ElevationChange_1934-2002.csv and ElevationChange_2002-2016.csv are listed in Yates and others (2017) and Johnson and others (2026), respectively. For both time periods, each sub-region CSV file (Upper, Middle, and Lower) is a duplicate of the complete study site CSV file (ElevationChange_1934-2002.csv or ElevationChange_2002-2016.csv) but clipped to the extent of the defined sub-region, and therefore, the same attributes are used.
Time_Period_of_Content:
Time_Period_Information:
Multiple_Dates/Times:
Single_Date/Time:
Calendar_Date: 1934
Single_Date/Time:
Calendar_Date: 2002
Single_Date/Time:
Calendar_Date: 2016
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -80.46500169
East_Bounding_Coordinate: -80.10980672
North_Bounding_Coordinate: 25.47811131
South_Bounding_Coordinate: 24.96580389
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:98bf770e-bc4d-46f3-b745-d55544d6fdb0
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: coelenterates
Theme_Keyword: geochemistry
Theme_Keyword: marine geology
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation
Theme_Keyword: elevation
Theme_Keyword: oceans
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: seafloor elevation
Theme_Keyword: sea level rise
Theme_Keyword: coral reefs
Theme_Keyword: seafloor accretion
Theme_Keyword: seafloor erosion
Theme:
Theme_Keyword_Thesaurus: Global Change Master Science Directory
Theme_Keyword:
EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH
Theme_Keyword: EARTH SCIENCE > OCEANS > COASTAL PROCESSES > CORAL REEFS
Theme_Keyword: EARTH SCIENCE > OCEANS > COASTAL PROCESSES > EROSION
Theme_Keyword: EARTH SCIENCE > OCEANS > COASTAL PROCESSES > SEA LEVEL RISE
Theme_Keyword:
PROVIDERS > GOVERNMENT AGENCIES-U.S. FEDERAL AGENCIES > DOI > DOI/USGS/CMG > COASTAL AND MARINE GEOLOGY, U.S. GEOLOGICAL SURVEY, U.S. DEPARTMENT OF INTERIOR
Theme_Keyword:
INSTRUMENTS > EARTH REMOTE SENSING INSTRUMENTS > ACTIVE REMOTE SENSING > PROFILERS/SOUNDERS > LIDAR/LASER SOUNDERS > LIDAR
Place:
Place_Keyword_Thesaurus: Geographic Names Information System
Place_Keyword: Florida Keys
Place_Keyword: State of Florida
Place_Keyword: Pickles Reef
Place_Keyword: Triumph Reef
Stratum:
Stratum_Keyword_Thesaurus: Oregon Geospatial Enterprise Office (GEO) Stratum Keyword
Stratum_Keyword: epipelagic
Temporal:
Temporal_Keyword_Thesaurus: None
Temporal_Keyword: 1934-2002
Temporal_Keyword: 2002-2016
Access_Constraints:
No access constraints. Please see 'Distribution Information' for details.
Use_Constraints:
These data are marked with a Creative Commons 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_Person_Primary:
Contact_Person: Selena A. Johnson
Contact_Organization:
U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL
Contact_Position: Research 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: 727-502-8053
Contact_Electronic_Mail_Address: selenajohnson@usgs.gov
Native_Data_Set_Environment:
Environment as of Metadata Creation: Microsoft Windows 10 Enterprise Version 22H2; Environmental Systems Research Institute (Esri) ArcMap version 10.7
Cross_Reference:
Citation_Information:
Originator: Yates, Kimberly K.
Originator: Zawada, David G.
Originator: Smiley, Nathan A.
Originator: Tiling-Range, Ginger
Publication_Date: 20170420
Title:
Divergence of seafloor elevation and sea level rise in coral reef ecosystems
Series_Information:
Series_Name: Biogeosciences
Issue_Identification: Volume 12, Issue 6
Publication_Information:
Publication_Place: Munich, Germany
Publisher: European Geosciences Union
Online_Linkage: https://doi.org/10.5194/bg-14-1739-2017
Cross_Reference:
Citation_Information:
Originator: Johnson, Selena, A.
Originator: Zawada, David G.
Originator: Yates, Kimberly K.
Originator: Jenkins, Connor, M.
Publication_Date: 20260201
Title:
Long- versus short-term changes in seafloor elevation and volume of the Upper Florida Keys reef tract: 1935–2002 and 2002–2016
Series_Information:
Series_Name: Remote Sensing
Issue_Identification: Volume 18, Issue 3
Publication_Information:
Publication_Place: Basel, Switzerland
Publisher: MDPI
Online_Linkage: https://doi.org/10.3390/rs18030463
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
A detailed accuracy assessment and error analysis are presented in Johnson and others (2026).
Logical_Consistency_Report:
Data cover area specified for this project without known issues.
Completeness_Report:
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 record for additional details pertaining to slightly different data processing steps used for the 2002-2016 elevation change data.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Raw elevation measurements have been determined to be within 1-meter (m) horizontal accuracy. Horizontal point locations were projected to the North American Datum of 1983 (NAD83 [1986]), Universal Transverse Mercator (UTM) Zone 17 North (17N) coordinate system.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
Elevations of the 2002 DEM are vertically consistent with the point elevation data, +/-20 centimeters (cm). Elevations of the 2016 DEM are vertically consistent with the point elevation data, +/-15 cm. Vertical point locations were projected to the North American Vertical Datum of 1988 (NAVD88) coordinate system using the GEOID03 geoid model.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator:
National Oceanic and Atmospheric Administration (NOAA) U.S. Coast and Geodetic Survey (USC&GS)
Publication_Date: 1935
Title: Historical hydrographic sheets
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place: Online
Publisher: NOAA Office of Coast Survey
Online_Linkage: https://www.ngdc.noaa.gov/hydro-survey-search/#!/
Type_of_Source_Media: H-sheets
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19340101
Ending_Date: 19350825
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: H05536, H05578, H05726A, H05878A, and H05879A
Source_Contribution:
Hydrographic sheets (h-sheets) collected in 1934 and 1935 used to calculate changes in seafloor elevation in the Northern Florida Keys study area. More information is available in Yates and others (2017) and Johnson and others (2026) about the methods used to derive seafloor elevation change using this data source.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Brock, John C.
Originator: Wright, Wayne C.
Originator: Nayegandhi, Amar
Originator: Patterson, Matt
Originator: Travers, Laurinda J.
Originator: Wilson, Iris
Publication_Date: 2007
Title: EAARL submarine topography - Northern Florida Keys Reef Tract
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: https://doi.org/10.3133/ofr20071432
Type_of_Source_Media: DEM
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20010710
Ending_Date: 20020809
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: 2001 and 2002 lidar-derived DEMs
Source_Contribution:
Lidar-derived DEMs collected in 2001 and 2002 used to calculate changes in seafloor elevation in the Northern Florida Keys study area. More information is available in Yates and others (2017) and Johnson and others (2026) about the methods used to derive seafloor elevation change using this data source.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Brock, John C.
Originator: Wright, Wayne C.
Originator: Nayegandhi, Amar
Originator: Patterson, Judd
Originator: Harris, Melanie S.
Originator: Mosher, Lance
Publication_Date: 2006
Title: EAARL submarine topography—Biscayne National Park
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: https://doi.org/10.3133/ofr20061118
Type_of_Source_Media: DEM
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20010710
Ending_Date: 20020809
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: 2001 and 2002 lidar-derived DEMs
Source_Contribution:
Lidar-derived DEMs collected in 2001 and 2002 used to calculate changes in seafloor elevation in the Northern Florida Keys study area. More information is available in Yates and others (2017) and Johnson and others (2026) about the methods used to derive seafloor elevation change using this data source.
Source_Information:
Source_Citation:
Citation_Information:
Originator: National Oceanic and Atmospheric Administration (NOAA)
Publication_Date: 2017
Title:
2016 NOAA NGS Topobathy Lidar: Florida Keys Outer Reef Blocks 02 & 03
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place: Charleston, SC
Publisher: NOAA Office for Coastal Management
Online_Linkage: https://coast.noaa.gov/dataviewer/#/lidar/search
Type_of_Source_Media: DEM
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20160721
Ending_Date: 20161121
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: 2016 lidar-derived DEM
Source_Contribution:
Lidar-derived DEM collected in 2016 used to calculate changes in seafloor elevation in the Northern Florida Keys study area. More information is available in Yates and others (2017) and Johnson and others (2026) about the methods used to derive seafloor elevation change using this data source.
Source_Information:
Source_Citation:
Citation_Information:
Originator: National Oceanic and Atmospheric Administration (NOAA)
Publication_Date: 2017
Title:
2017 NOAA NGS Topobathy Lidar: Florida Keys Outer Reef, Block 04
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place: Charleston, SC
Publisher: NOAA Office for Coastal Management
Online_Linkage: https://coast.noaa.gov/dataviewer/#/lidar/search
Type_of_Source_Media: DEM
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20170216
Ending_Date: 20170220
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: 2017 lidar-derived DEM
Source_Contribution:
Lidar-derived DEM collected in 2017 used to calculate changes in seafloor elevation in the Northern Florida Keys study area. More information is available in Yates and others (2017) and Johnson and others (2026) about the methods used to derive seafloor elevation change using this data source.
Process_Step:
Process_Description:
To allow direct comparison between the time periods of 1934 to 2002 and 2002 to 2016, the geometric intersection between the 2002 and 2016 DEMs was defined. Using ArcMap version 10.7, footprints of the 2002 and 2016 merged DEMs were created using the "Reclassify (Spatial Analyst)" geoprocessing tool. To create each raster file, all old data values were replaced with 1 and 'No Data' values were left as 'No Data'. Then, the output raster was converted into a polygon shapefile (.shp) using the "Raster to Polygon (Conversion)" geoprocessing tool. A polygon shapefile of the geometric intersection between the 2002 and 2016 merged DEMs was created with the "Intersect (Analysis)" geoprocessing tool by adding the two DEM footprint shapefiles as 'Input features', creating Footprint_2016_NOAA_blocks2-4_clip_2002_EAARL_n83_1986_n88_g03_no_subaerial.shp file. The Footprint_2016_NOAA_blocks2-4_clip_2002_EAARL_n83_1986_n88_g03_no_subaerial.shp file was used to clip each dataset (h-sheets and lidar) prior to elevation and volume change analyses. Additional details are provided in Johnson and others (2026). This shapefile is provided in LidarOverlappingArea_2002-2016.zip.
Source_Used_Citation_Abbreviation: H05536, H05578, H05726A, H05878A, and H05879A
Source_Used_Citation_Abbreviation: 2001 and 2002 lidar-derived DEMs
Source_Used_Citation_Abbreviation: 2016 and 2017 lidar-derived DEMs
Process_Date: 2020
Source_Produced_Citation_Abbreviation:
Footprint_2016_NOAA_blocks2-4_clip_2002_EAARL_n83_1986_n88_g03_no_subaerial.shp
Process_Step:
Process_Description:
Methods from Yates and others (2017) were used for the 1934-2002 Upper Florida Keys analysis for the smaller area in the Upper Florida Keys region used in this study. Yates and others (2017) also identified sub-regional patterns in elevation change for the 1934-2002 period. Shapefiles were created that define these sub-regional boundaries by hand for use in this study (UpperRegion.shp, MiddleRegion.shp, LowerRegion.shp). These shapefiles are included in the file Subregion_boundary_definitions.zip.
Process_Date: 2020
Source_Produced_Citation_Abbreviation: ElevationChange_1934-2002.csv
Source_Produced_Citation_Abbreviation: UpperRegion.shp
Source_Produced_Citation_Abbreviation: MiddleRegion.shp
Source_Produced_Citation_Abbreviation: LowerRegion.shp
Source_Produced_Citation_Abbreviation: ElevationChange_1934-2002_LowerRegion.csv
Source_Produced_Citation_Abbreviation: ElevationChange_1934-2002_MiddleRegion.csv
Source_Produced_Citation_Abbreviation: ElevationChange_1934-2002_UpperRegion.csv
Process_Step:
Process_Description:
The methods outlined in Johnson and others (2026) were performed for the 2002-2016 Northern Florida Keys and sub-regional elevation and volume change datasets in this release.
Process_Date: 2020
Source_Produced_Citation_Abbreviation: ElevationChange_2002-2016.csv
Source_Produced_Citation_Abbreviation: UpperRegion.shp
Source_Produced_Citation_Abbreviation: MiddleRegion.shp
Source_Produced_Citation_Abbreviation: LowerRegion.shp
Source_Produced_Citation_Abbreviation: ElevationChange_2002-2016_LowerRegion.csv
Source_Produced_Citation_Abbreviation: ElevationChange_2002-2016_MiddleRegion.csv
Source_Produced_Citation_Abbreviation: ElevationChange_2002-2016_UpperRegion.csv
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: 25926
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 17N
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -81
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: 1
Ordinate_Resolution: 1
Planar_Distance_Units: Meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983 (1986)
Ellipsoid_Name: GRS 1980
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222101
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: North American Vertical Datum of 1988 (NAVD88) GEOID03
Altitude_Resolution: 0.2
Altitude_Distance_Units: meters
Altitude_Encoding_Method:
Explicit elevation coordinate included with horizontal coordinates
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: ElevationChange_1934-2002.csv
Entity_Type_Definition:
Comma separated values (.csv) file, containing the elevation point locations and associated seafloor elevation change values for the full study area from 1934 to 2002. Additional data files were derived from this dataset, defined by the three sub-regions (lower, middle upper), also provided in .csv format. The range of values reported below are for the entire study area data file.
Entity_Type_Definition_Source: USGS
Attribute:
Attribute_Label: HSHEET
Attribute_Definition:
Hydrographic survey sheet number. The hydrographic sheet (h-sheet) from which the historical bathymetric elevation data was collected.
Attribute_Definition_Source: NOAA USC&GS (https://www.ngdc.noaa.gov/hydro-survey-search/#!/)
Attribute_Domain_Values:
Unrepresentable_Domain: H05536, H05578, H05726A, H05878A, H05879A
Attribute:
Attribute_Label: YEAR
Attribute_Definition: Year the hydrographic sheet was published.
Attribute_Definition_Source: NOAA USC&GS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1934
Range_Domain_Maximum: 1935
Attribute:
Attribute_Label: Longitude (UTM, meters)
Attribute_Definition:
NAD83(1986), UTM zone 17N geographic coordinate of sample point, in meters.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 554001.2320
Range_Domain_Maximum: 589481.9666
Attribute_Units_of_Measure: Meters
Attribute:
Attribute_Label: Latitude (UTM, meters)
Attribute_Definition:
NAD83(1986), UTM zone 17N geographic coordinate of sample point, in meters.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2761453.4630
Range_Domain_Maximum: 2817998.9500
Attribute_Units_of_Measure: Meters
Attribute:
Attribute_Label: Historical sounding (NAVD88 (GEOID03), meters)
Attribute_Definition:
Historical sounding. Historical depth in NAVD88 using the GEOID03 geoid model. Negative values indicate positions below local mean sea level.
Attribute_Definition_Source: U.S. Coast and Geodetic Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -19.0321
Range_Domain_Maximum: -0.9554
Attribute_Units_of_Measure: Meters
Attribute:
Attribute_Label: LiDAR elevation (NAVD88 (GEOID03), meters)
Attribute_Definition:
Modern depth in NAVD88. Negative values indicate below local mean sea level.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -16.67037964
Range_Domain_Maximum: -0.972164929
Attribute_Units_of_Measure: Meters
Attribute:
Attribute_Label: Difference = LiDAR - Historical (meters)
Attribute_Definition:
The difference between the modern (lidar) and historical (H-sheets) depths. Negative values indicate loss of seafloor elevation. Positive values indicate a gain in seafloor elevation.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -8.254686717
Range_Domain_Maximum: 6.464020674
Attribute_Units_of_Measure: Meters
Detailed_Description:
Entity_Type:
Entity_Type_Label: ElevationChange_2002-2016.csv
Entity_Type_Definition:
Comma separated values (.csv) file, containing the elevation point locations and associated seafloor elevation change values for the full study area from 2002 to 2016. Additional data files were derived from this dataset, defined by the three sub-regions (lower, middle upper), also provided in .csv format. The range of values reported below are for the entire study area data file.
Entity_Type_Definition_Source: USGS
Attribute:
Attribute_Label: Longitude (UTM, meters)
Attribute_Definition:
NAD83 (1986), UTM zone 17N geographic coordinate of sample point, in meters.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 554001.2320
Range_Domain_Maximum: 589481.9666
Attribute_Units_of_Measure: Meters
Attribute:
Attribute_Label: Latitude (UTM, meters)
Attribute_Definition:
NAD83 (1986), UTM zone 17N geographic coordinate of sample point, in meters.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2761453.4630
Range_Domain_Maximum: 2817998.9500
Attribute_Units_of_Measure: Meters
Attribute:
Attribute_Label: 2002 LiDAR elevation (NAVD88 (GEOID03), meters)
Attribute_Definition:
2002 LiDAR depth in NAVD88. Negative values indicate below local mean sea level.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -16.67037964
Range_Domain_Maximum: -0.972164929
Attribute_Units_of_Measure: Meters
Attribute:
Attribute_Label: 2016 LiDAR elevation (NAVD88,GEOID03, meters)
Attribute_Definition:
2016 LiDAR depth in NAVD88. Negative values indicate below local mean sea level.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -16.64999962
Range_Domain_Maximum: -0.959999979
Attribute_Units_of_Measure: Meters
Attribute:
Attribute_Label: Difference = 2016_LiDAR - 2002_LiDAR (meters)
Attribute_Definition:
The difference between the modern (2016 lidar) and historical (2002 lidar) depths. Negative values indicate loss of seafloor elevation. Positive values indicate a gain in seafloor elevation.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -2.22014606
Range_Domain_Maximum: 8.93669844
Attribute_Units_of_Measure: Meters
Overview_Description:
Entity_and_Attribute_Overview:
LowerRegion.shp, MiddleRegion.shp, UpperRegion.shp: Boundary shapefiles were created by hand, that define the three sub-regional boundaries of the study area. These shapefiles are included in the file Subregion_boundary_definitions.zip.
Entity_and_Attribute_Detail_Citation:
The entity and attribute information were generated by the individual and/or agency identified as the originator of the dataset. Please review the rest of the metadata record for additional details and information.
Overview_Description:
Entity_and_Attribute_Overview:
Footprint_2016_NOAA_blocks2-4_clip_2002_EAARL_n83_1986_n88_g03_no_subaerial.shp: Footprint shapefile of the geometric intersection area between the 2002 and 2016 DEMs, used to produce the elevation change datasets. This shapefile is included in the file LidarOverlappingArea_2002-2016.zip.
Entity_and_Attribute_Detail_Citation:
The entity and attribute information were generated by the individual and/or agency identified as the originator of the dataset. Please review the rest of the metadata record for additional details and information.
Overview_Description:
Entity_and_Attribute_Overview:
UnifiedFloridaReefTract_n83_1986_g03_clip_2002_2016Lidars_clip_TIN.shp: Shapefile of the habitat map clipped to the intersecting area of the 2002 and 2016 DEMs, used to produce the elevation change datasets. This shapefile is included in the file HabitatMap_NAD83-1986.zip.
Entity_and_Attribute_Detail_Citation:
The entity and attribute information were generated by the individual and/or agency identified as the originator of the dataset. Please review the rest of the metadata record for additional details and information.
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:
ElevationChange_1934-2002.csv, ElevationChange_1934-2002_LowerRegion.csv, ElevationChange_1934-2002_MiddleRegion.csv, ElevationChange_1934-2002_UpperRegion.csv, ElevationChange_2002-2016.csv, ElevationChange_2002-2016_LowerRegion.csv, ElevationChange_2002-2016_MiddleRegion.csv, ElevationChange_2002-2016_UpperRegion.csv, LowerRegion.shp, MiddleRegion.shp, UpperRegion.shp, Footprint_2016_NOAA_blocks2-4_clip_2002_EAARL_n83_1986_n88_g03_no_subaerial.shp, UnifiedFloridaReefTract_n83_1986_g03_clip_2002_2016Lidars_clip_TIN.shp
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, shapefile
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
https://coastal.er.usgs.gov/data-release/doi-P1VGATCF/ElevationChange_1934_to_2002.zip
Network_Resource_Name:
https://coastal.er.usgs.gov/data-release/doi-P1VGATCF/ElevationChange_2002_to_2016.zip
Network_Resource_Name:
https://coastal.er.usgs.gov/data-release/doi-P1VGATCF/Subregion_boundary_definitions.zip
Network_Resource_Name:
https://coastal.er.usgs.gov/data-release/doi-P1VGATCF/LidarOverlappingArea_2002-2016.zip
Network_Resource_Name:
https://coastal.er.usgs.gov/data-release/doi-P1VGATCF/HabitatMap_NAD83-1986.zip
Fees: None
Metadata_Reference_Information:
Metadata_Date: 20260202
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
This page is <https://cmgds.marine.usgs.gov/catalog/spcmsc/ElevationChange_1934_2002_2016_Metadata.html>
Generated by mp version 2.9.51 on Mon Feb 2 11:05:43 2026