Metadata: Identification_Information: Citation: Citation_Information: Originator: Kelly A. Murphy Originator: Kimberly K. Yates Publication_Date: 20210628 Title: Crocker Reef, Florida, 2017-2018 Seafloor Elevation Stability Models, Maps, and Tables Geospatial_Data_Presentation_Form: vector, tabular and raster digital data Larger_Work_Citation: Citation_Information: Originator: Kelly A. Murphy Originator: Kimberly K. Yates Publication_Date: 20210628 Title: Crocker Reef, Florida, 2017-2018 Seafloor Elevation Stability Models, Maps, and Tables Geospatial_Data_Presentation_Form: Publication Series_Information: Series_Name: U.S. Geological Survey data release Issue_Identification: doi:10.5066/P93998WB Publication_Information: Publication_Place: St. Petersburg, FL Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P93998WB Description: Abstract: The U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center (SPCMSC) conducted research to identify areas of seafloor elevation stability and instability based on elevation changes between the years of 2017 and 2018 at Crocker Reef near Islamorada, Florida (FL), within a 6.11 square-kilometer area. USGS SPCMSC staff used seafloor elevation-change data from Yates and others (2019) derived from an elevation-change analysis between two elevation datasets acquired in 2017 and 2018 using the methods of Yates and others (2017). A seafloor stability threshold was determined for the 2017-2018 Crocker Reef elevation-change dataset based on the vertical uncertainty of the 2017 and 2018 digital elevation models (DEMs). Five stability categories (which include, Stable: 0.0 meters (m) to ±0.24 m or 0.0 m to ±0.49 m; Moderately stable: ±0.25 m to ±0.49 m; Moderately unstable: ±0.50 m to ±0.74 m; Mostly unstable: ±0.75 m to ±0.99 m; and Unstable: ±1.00 m to Max/Min elevation change) were created and used to define levels of stability and instability for each elevation-change value (1,525,339 data points at 2-m horizontal resolution) based on the amount of erosion and accretion during the 2017 to 2018 time period. Seafloor-stability point and triangulated irregular network (TIN) surface models were created at five different elevation-change data resolutions (1st order through 5th order) with each resolution becoming increasingly more detailed. The stability point models were used to determine the level of seafloor stability at seven habitat types found at Crocker Reef. This data release includes ArcGIS map packages containing the binned and color-coded stability point and surface (TIN) models and habitat files; maps of each stability model; and data tables containing stability and elevation-change data for the habitat types. Data were collected under Florida Keys National Marine Sanctuary permit FKNMS-2016-068. Purpose: These data were used to identify areas of seafloor elevation stability and instability, from 2017 to 2018, at Crocker Reef, FL. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20171010 Ending_Date: 20180315 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -80.553526 East_Bounding_Coordinate: -80.512006 North_Bounding_Coordinate: 24.920844 South_Bounding_Coordinate: 24.891364 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:1d486d27-6411-4168-86af-7a2a3c3abb7e Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: marine geology Theme_Keyword: reef ecosystems Theme_Keyword: coelenterates Theme_Keyword: sea-floor characteristics 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: seafloor erosion Theme_Keyword: submerged topography Theme_Keyword: elevation change Theme_Keyword: seafloor accretion Theme_Keyword: altimetry Theme_Keyword: seafloor stability Theme: Theme_Keyword_Thesaurus: Global Change Master Directory (GCMD) Science Theme_Keyword: OCEAN > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH Theme_Keyword: OCEAN > COASTAL PROCESSES > EROSION Theme_Keyword: OCEAN > COASTAL PROCESSES > COASTAL ELEVATION Theme_Keyword: OCEAN > COASTAL PROCESSES > CORAL REEFS Theme: Theme_Keyword_Thesaurus: GCMD Providers Theme_Keyword: DOI/USGS/CMG > COASTAL AND MARINE GEOLOGY, U.S. GEOLOGICAL SURVEY, U.S. DEPARTMENT OF INTERIOR Theme: Theme_Keyword_Thesaurus: GCMD Instrument Theme_Keyword: MBES > MULTIBEAM MAPPING SYSTEM Place: Place_Keyword_Thesaurus: Geographic Names Information System Place_Keyword: Crocker Reef Place_Keyword: Florida Keys Place_Keyword: Florida Place: Place_Keyword_Thesaurus: None Place_Keyword: Florida Reef Tract Place_Keyword: Florida Keys National Marine Sanctuary Stratum: Stratum_Keyword_Thesaurus: None Stratum_Keyword: submerged Stratum_Keyword: seafloor Temporal: Temporal_Keyword_Thesaurus: None Temporal_Keyword: 2017-2018 Access_Constraints: none Use_Constraints: Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. The U.S. Geological Survey requests to be acknowledged as originator of these data in future products or derivative research. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Kimberly K. Yates Contact_Organization: Southeast Region: St. Petersburg Coastal and Marine Science Center Contact_Position: Research Oceanographer Contact_Address: Address_Type: mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: Florida Postal_Code: 33701 Country: United States Contact_Voice_Telephone: 727-502-8059 Contact_Electronic_Mail_Address: kyates@usgs.gov Cross_Reference: Citation_Information: Originator: Yates, Kimberly K. Originator: Zawada, David G. Originator: Fehr, Zachery W. Originator: Arsenault, Stephanie R. Publication_Date: 20190722 Title: Seafloor Elevation Change From 2017 to 2018 at a Subsection of Crocker Reef, Florida Keys—Impacts From Hurricane Irma Series_Information: Series_Name: U.S. Geological Survey data release Issue_Identification: doi:10.5066/P94TY8CT Publication_Information: Publication_Place: St. Petersburg, FL Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P94TY8CT 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 Publication_Information: Publication_Place: Munich, Germany Publisher: Biogeosciences Online_Linkage: https://doi.org/10.5194/bg-14-1739-2017 Cross_Reference: Citation_Information: Originator: International Hydrographic Organization Publication_Date: 2008 Title: IHO Standards for Hydrographic Surveys Publication_Information: Publication_Place: 4, quai Antoine 1er B.P. 445 - MC 98011 MONACO Cedex Principauté de Monaco Publisher: International Hydrographic Bureau Online_Linkage: https://www.iho.int/iho_pubs/standard/S-44_5E.pdf Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Datasets were visually inspected by USGS staff in Esri ArcGIS Desktop Advanced version 10.6 for identification of data inconsistencies. Logical_Consistency_Report: Data cover the area specified for this project, without any 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 and Yates and others (2019) carefully for additional details. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: For the 2017 and 2018 multibeam data used to produce the point dataset, all data were collected and processed to meet or exceed International Hydrographic Organization (IHO) Special Order Standards for positioning and depth (IHO, 2008). Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: For the 2017 and 2018 multibeam data used to produce the point dataset, all data were collected and processed to meet or exceed International Hydrographic Organization (IHO) Special Order Standards for positioning and depth (IHO, 2008). Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Kimberley K. Yates, David G. Zawada, Zachery W. Fehr, and Stephanie R. Arsenault Publication_Date: 20190722 Title: Elevation Change From 2017 to 2018 at a Subsection of Crocker Reef, Florida Keys-Impacts from Hurricane Irma Geospatial_Data_Presentation_Form: Shapefile Publication_Information: Publication_Place: St. Petersburg, FL Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P94TY8CT Type_of_Source_Media: Elevation-change data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20171010 Ending_Date: 20180315 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: 2017-2018 Crocker Reef elevation-change points Source_Contribution: The original elevation-change points containing the calculated elevation change from 2017 to 2018 at Crocker Reef, FL. Process_Step: Process_Description: Step 1: The original 2017-2018 Crocker Reef elevation-change points (2017_2018_CrockerReef_SeafloorStability_Points shapefile) were processed and published by Yates and others (2019). For more information on the elevation-change data processing steps, source elevation data, and elevation-change points, see Yates and others (2019). Horizontal coordinates are referenced to the Universal Transverse Mercator (UTM) North American Horizontal Datum of 1983 (NAD83) National Spatial Reference System of 2007 (NSRS2007) National Readjustment and vertical coordinates are referenced to the North American Vertical Datum of 1988 (NAVD88), GEOID12B geoid model. Process_Date: 2020 Process_Step: Process_Description: Step 2: An elevation-change surface model was created in Esri ArcGIS Desktop Advanced version 10.6 (ArcMap) using the calculated elevation-change (Diff_m) points from the 2017_2018_CrockerReef_SeafloorStability_Points shapefile and methods of Yates and others (2017). The TIN was created using the “Create TIN (3D Analyst)” tool by specifying the 2017_2018_CrockerReef_SeafloorStability_Points shapefile as the “Input Feature Class”, Diff_m as the “Height Field” and Mass_Points as the “Type”, creating the 2017_2018_CrockerReef_SeafloorStability_TIN file. The 2017_2018_CrockerReef_SeafloorStability_TIN file was delineated using the “Delineate TIN Data Area (3D Analyst)” tool by specifying the 2017_2018_CrockerReef_SeafloorStability_TIN file as the “Input TIN”, a “Maximum Edge Length” of 2.828428 (hypotenuse of a triangle with 2-meter (m) legs) and the “Method” set to ALL. The delineated 2017_2018_CrockerReef_SeafloorStability_TIN was then clipped to the extent of the 2017 and 2018 DEMs using the “Edit TIN (3D Analyst)” tool with the following parameters: “Input TIN”: 2017_2018_CrockerReef_SeafloorStability_TIN file; “Input Features Class”: 2017-2018 geometric intersection footprint; “Height Field”: None; “Tag Field”: None; and “Type”: Hard clip. This step was required to remove unwanted triangles that spanned data gaps in the original DEMs used to generate the 2017_2018_CrockerReef_SeafloorStability_Points shapefile. For information on how to generate a geometric intersection between the 2017 and 2018 DEMs, see Yates and others (2017 and 2019). Process_Date: 2020 Process_Step: Process_Description: Step 3: The 2017_2018_CrockerReef_SeafloorStability_TIN file was classified into five stability categories using a defined stability threshold to identify areas of stability and instability. The stability threshold is the total root mean square error (RMSE) calculated for the 2017-2018 Crocker Reef elevation-change points using the vertical uncertainty of the 2017 and 2018 DEMs. A total RMSE of 0.21 m was calculated and rounded up to create a conservative stability threshold of 0.25 m that was applied to the TIN. See Yates and others (2017) for methods on calculating the RMSE. Based on the specified stability threshold of 0.25 m, the following five stability categories were identified: Stable: 0.0 m to ±0.24 m or 0.0 m to ±0.49 m; Moderately stable: ±0.25 m to ±0.49 m; Moderately unstable: ±0.50 m to ±0.74 m; Mostly unstable: ±0.75 m to ±0.99 m; and Unstable: ±1.00 m to Max/Min elevation change. Category boundaries use the pattern of “lower bound < or = x < upper bound” to avoid inclusion of individual elevation-change values in multiple categories. The categories were assigned based on the absolute value of the elevation-change values. For example, values within ±0.24 m of change were classified as Stable. Process_Date: 2020 Process_Step: Process_Description: Step 4: The 2017_2018_CrockerReef_SeafloorStability_TIN file was opened in ArcMap and the “Layer Properties” window was opened by double clicking the TIN in the “Table of Contents”. Within the “Symbology” tab, “Show: Elevation” was enabled, and “Classification Classes” was set to 10. To specify the bin values, “Classify” was selected within the “Classification” window, and the following “Break Values” were used to classify and bin the elevation-change values into ten classes: -0.994999 (class1); -0.744999 (class 2); -0.494999 (class 3); -0.244999 (class 4); 0 (class 5); 0.244999 (class 6); 0.494999 (class 7); 0.744999 (class 8); 0.994999 (class 9); and maximum positive elevation-change value (class 10). The “Break Values” were based on the 0.25 m stability threshold, with each class increasing in increments of 0.24 m up to ±1 m of change. Classes 4, 5 and 6 represent the stable elevation-change values with no change detected (Stable), classes 1 and 10 represent the unstable elevation-change values with change greater than ±1 m (Unstable), and the remaining classes represent the elevation-change values in between (Moderately stable through Mostly unstable). Process_Date: 2020 Process_Step: Process_Description: Step 5: The color symbology of the classes listed in the “Table of Contents” were changed to represent each stability category. A color gradient of red, gray, and blue shades was applied to the binned TIN to distinguish the stability level of each elevation-change value and distinguish areas of erosion and accretion. Both positive and negative elevation-change values that fell within the Stable category were colored gray. However, red and blue shades were applied to elevation-change values that fell within categories Moderately stable through Unstable to distinguish areas of erosion and accretion. Blue shades were applied to elevation-change values with positive elevation change (accretion) and red shades were applied to elevation-change values with negative elevation change (erosion). Lighter shades indicate the smallest amount of change while darker shades indicate the largest amount of change. Process_Date: 2020 Process_Step: Process_Description: Step 6: Additionally, the 2017-2018 Crocker Reef elevation-change points were classified into the five stability categories. The process was similar to the methods described in steps 3-5; however, the “Break Values” were defined differently because the method for binning points is different than delineating break points for a TIN in ArcMap. The 2017_2018_CrockerReef_SeafloorStability_Points shapefile was opened in ArcMap and the “Layer Properties” window was opened by double clicking the points in the “Table of Contents”. Within the “Symbology” tab, “Show: Quantities” was expanded, “Graduated Colors” was selected, “Value” was set to the attribute containing the elevation-change values (Diff_m) and “Classification Classes” was set to 10. The maximum sample size was reached. To change the sample size, “Classify” was selected within the “Classification” window, and the “Data Sampling” window was opened by selecting “Sampling”. Within the “Data Sampling” window, “Maximum Sample Size” was set to the total number of points, 1,525,339. The following “Break Values” were used to classify and bin the Diff_m values into ten classes: -0.995 (class 1); -0.745 (class 2); -0.495 (class 3); -0.245 (class 4); 0 (class 5); 0.244999 (class 6); 0.494999 (class 7); 0.744999 (class 8); 0.994999 (class 9); and max positive Diff_m value (class 10). The remaining steps to change the color symbology are the same as described in step 5. Process_Date: 2020 Process_Step: Process_Description: Step 7: The above process steps were repeated four times using different stability categories to represent a total of five different resolutions of elevation-change stability maps. The same color scheme was used for each resolution map. The above stability categories and “Break Values” described in Steps 3-6 represent the highest resolution map, 5th order. The remaining four resolutions of maps (1st through 4th order) required different “Break Values” and stability category ranges. The specific parameters for each resolution map are described in steps 8 through 11. Process_Date: 2020 Process_Step: Process_Description: Step 8: The 4th order resolution map was generated for the 2017_2018_CrockerReef_SeafloorStability_TIN file using the following eight “Break Values”: -0.744999, -0.494999, -0.244999, 0, 0.244999, 0.494999, 0.744999, and max positive elevation-change value. The following eight “Break Values” were used for the 2017_2018_CrockerReef_SeafloorStability_Points shapefile: -0.745, -0.495, -0.245, 0, 0.244999, 0.494999, 0.744999, and max Diff_m value. The four associated stability categories for both are as follows: Stable: 0.0 m to ±0.24 m, Moderately stable: ±0.25 m to ±0.49 m, Moderately unstable: ±0.50 m to ±0.74 m, Unstable: ±0.75 m to Max/Min elevation change. The 4th order resolution maps combine the Mostly unstable values into the Unstable category. Process_Date: 2020 Process_Step: Process_Description: Step 9: The 3rd order resolution map was generated for the 2017_2018_CrockerReef_SeafloorStability_TIN file using the following six “Break Values”: -0.494999, -0.244999, 0, 0.244999, 0.494999, and max positive elevation-change value. The following six “Break Values” were used for the 2017_2018_CrockerReef_SeafloorStability_Points shapefile: -0.495, -0.245, 0, 0.244999, 0.494999, and max positive Diff_m value. The three associated stability categories for both are as follows: Stable: 0.0 m to ±0.24 m, Moderately stable: ±0.25 m to ±0.49 m, Unstable: ±0.50 m to Max/Min elevation change. The 3rd order resolution maps combine the Moderately unstable and Mostly unstable values into the Unstable category. Process_Date: 2020 Process_Step: Process_Description: Step 10: The 2nd order resolution map was generated for the 2017_2018_CrockerReef_SeafloorStability_TIN file using the following three “Break Values”: -0.494999, 0.494999, and max positive elevation-change value. The following three “Break Values” were used for the 2017_2018_CrockerReef_SeafloorStability_Points shapefile: -0.495, 0.494999, and max positive Diff_m value. The two associated stability categories for both are as follows: Stable: 0.0 m to ±0.49 m and Unstable: ±0.50 m to Max/Min elevation change. The 2nd order resolution maps combine the Moderately stable values into the Stable category, and the Moderately unstable and Mostly unstable values into the Unstable category. Process_Date: 2020 Process_Step: Process_Description: Step 11: The 1st order resolution map was generated using the same “Break Values” and stability category ranges as the 2nd order resolution map. However, both positive and negative values that fell within the Unstable category were colored dark red regardless of being negative or positive to depict only stable and unstable areas regardless of gain or loss in elevation. Process_Date: 2020 Process_Step: Process_Description: Step 12: Using Microsoft Excel 2016, average elevation changes and standard deviations calculated by the USGS SPCMSC for each habitat found within the 2017-2018 elevation-change points data extent were entered into a table and color coded based on the defined stability colors for each map resolution. For information on how to calculate elevation-change statistics by habitat type, see Yates and others (2017 and 2019). Process_Date: 2020 Process_Step: Process_Description: Step 13: Map packages (.mpk) containing a map document and the data it contains were created for each resolution map. Each map document contains the habitat map and the binned and color coded 2017_2018_CrockerReef_SeafloorStability_Points shapefile and 2017_2018_CrockerReef_SeafloorStability_TIN file. For users that have access to ArcMap, the map packages can be downloaded and opened to display the habitat types and binned points and TIN for each resolution. The individual contents of the map packages are also provided in this data release, including layer files that store the symbology information for each resolution of the seafloor stability points and TIN. The layer files can be applied to the stability points or TIN in ArcMap within the “Symbology” tab of the “Layer Properties” window. Process_Date: 2020 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Point Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 17 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -81.0 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: North American Datum of 1983 National Spatial Reference System (2007) Ellipsoid_Name: GRS_1980 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257222 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Altitude_Datum_Name: North American Vertical Datum of 1988 (NAVD88) GEOID12B Altitude_Resolution: 0.2 Altitude_Distance_Units: meters Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinates Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: The detailed attribute descriptions for the stability data tables and maps are provided in the included data dictionaries (StabilityCategories_DataDictionary.pdf, StabilityTables_DataDictionary.pdf, and HabitatTypes_DataDictionary.pdf). These metadata are not complete without these files. 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_Person_Primary: Contact_Person: Kimberly K. Yates Contact_Organization: Southeast Region: St. Petersburg Coastal and Marine Science Center Contact_Position: Research Oceanographer Contact_Address: Address_Type: mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: United States Contact_Voice_Telephone: 727-502-8059 Contact_Electronic_Mail_Address: kyates@usgs.gov 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 on any other system, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The USGS shall not be held liable for improper or incorrect use of the data described or contained herein. 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: JPEG, MPK, SHP, LYR, ADF, CSV, XLSX Format_Version_Number: none, ArcGIS 10.6, RFC 4180, Microsoft Excel 2016 Format_Specification: Joint Photographic Experts Group, Esri map package, Esri point and polygon shapefiles, Esri layer files, Esri TIN, comma-separated values, Excel Microsoft Office Open XML Format Spreadsheet file. Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P93998WB/data/2017_2018_CrockerReef_MapPackages_5Resolutions.zip Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P93998WB/data/2017_2018_CrockerReef_Maps_Point_5Resolutions.zip Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P93998WB/data/2017_2018_CrockerReef_Maps_TIN_5Resolutions.zip Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P93998WB/data/2017_2018_CrockerReef_Tables_5Resolutions.zip Fees: None Technical_Prerequisites: Users must have access to Esri ArcGIS Desktop Advanced (ArcMap) version 10.6 or later to open the map packages provided in this data release. Metadata_Reference_Information: Metadata_Date: 20210521 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Kimberly K. Yates Contact_Organization: Southeast Region: St. Petersburg Coastal and Marine Science Center Contact_Position: Research Oceanographer Contact_Address: Address_Type: mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: Florida Postal_Code: 33701 Country: United States Contact_Voice_Telephone: 727-502-8059 Contact_Electronic_Mail_Address: kyates@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998