Mark Hansen 2015 tabular digital data Archive of Bathymetry Data Collected in South Florida from 1995 to 2015 U.S. Geological Survey Data Series-1031 St. Petersburg, Florida U.S. Geological Survey https://pubs.usgs.gov/ds/1031/download/CRomano/soundings/DS1031-CRomano_WGS84_NAVD88-G03_SB_txt.xyz.zip During the last few decades, the coastal environments of south Florida have shown signs of ecological deterioration that has been attributed to changes in freshwater inflows caused by management practices and corresponding increases of salinity and nutrient content in estuarine waters. With plans to restore water levels in the Southern Golden Gate Estates area north of Tamiami Trail to more natural conditions, changes are expected in the amount, timing, and distribution of freshwater discharge through bridges and culverts under US-41, and therefore altering current conditions in the wetlands and estuaries to the south. Bathymetric and hydrologic information throughout the Ten Thousand Islands Aquatic Preserve and adjacent ecosystems is critical for the development and calibration of hydrodynamic models that would help with the evaluation of restoration results. With construction of the Southern Golden Gate Estates Hydrologic Restoration and Tamiami Trail Culvert projects underway, the need to determine the physical characteristics of rivers and bays within the areas to the south of US-41 that will be greatly impacted by both of these projects, becomes even more urgent. There are significant physical information gaps throughout the wetlands and estuaries within the study area that still need to be addressed. Among these gaps are the bathymetry of rivers and bays of the Ten Thousand Islands Preserve, estimates of freshwater flows across the Trail, groundwater information within the marshes south of Tamiami Trail (including Specific Conductance/salinity), flows at or near the mouth of tributaries for the determination of contaminant transport, water level, and salinity data throughout the area. This report serves as an archive of processed single-beam bathymetry data that were collected offshore from Wiggins Pass to Cape Romano, Florida in 2005. Geographic information system data products include a XYZ data, bathymetric contours, and USGS quadrangle map. Additional files include formal Federal Geographic Data Committee (FGDC) metadata. The results of this study will prioritize information needs (bathymetric and hydrologic) for all tributaries flowing into the Ten Thousand Islands Aquatic Preserve, by conducting bathymetric surveys along priority estuarine rivers and offshore coastal areas and by describing the hydrodynamic characteristics of estuarine rivers (tidal magnitudes) and relevance to the overall circulation and mixing patterns of the area. This project addresses the collection and interpretation of data necessary to develop the present day bathymetry offshore from Wiggins Pass to Cape Romano, Florida. 2005 2005 Data assumed to be constant over time but may change due to geologic processes. Complete None planned -81.90113 -81.68651 25.81020 26.24966 USGS Metadata Identifier USGS:7c8bc891-e4be-4b54-9291-31c5d00caed1 General bathymetry circulation model hydrology mapping SANDS sediment dynamics System for Accurate Nearshore Depth Surveying single beam echosounder erosion hydrography U.S. Geological Survey USGS Coastal and Marine Geology Program CMGP St. Petersburg Coastal and Marine Science Center SPCMSC soundings elevation sea floor orthometric water depth ISO 19115 Topic Category environment inlandWaters elevation geoscientificInformation imageryBaseMapsEarthCover oceans Department of Commerce, 2001, Countries, Dependencies, Areas of Special Sovereignty, and Their Principal Administrative Divisions, Federal Information Processing Standard (FIPS) 10-4, Washington, D.C., National Institute of Standards and Technology United States US U.S. Department of Commerce, 1987, Codes for the identification of the States, the District of Columbia and the outlying areas of the United States, and associated areas (Federal Information Processing Standard 5-2): Washington, D. C., NIST Florida FL Department of Commerce, 1990, Counties and Equivalent Entities of the United States, Its Possessions, and Associated Areas, FIPS 6-3, Washington, DC, National Institute of Standards and Technology Gulf of Mexico Caloosahatchee River Charlotte Harbor Captiva Island Wiggins Pass Marco Island Cape Romano Naples Lovers Key The U.S. Geological Survey requests that it be referenced as the originator of this dataset in any future products or research derived from these data. These data should not be used for navigational purposes. Mark Hansen U.S. Geological Survey Oceanographer mailing and physical address

600 Fourth Street South

St. Petersburg FL 33701 USA (727) 502-8000 mhansen@usgs.gov South Florida Water Management District (SFWMD) provided funding for the study. The project was conducted as a cooperative study by personnel from the USGS in St. Petersburg, FL and the SFWMD, in Fort Myers, FL. Mark Hansen was the USGS principal investigator. Dana Wiese performed a significant portion of bathymetric survey data collection. Microsoft Windows 7 Enterprise, Service Pack 1; ESRI ArcGIS 10.2.1 Build 3497 Hansen, Mark Eduardo Patino 2003 report USGS South Florida Information Access (SOFIA) SOFIA St. Petersburg, FL U.S. Geological Survey http: The accuracy of the data is determined during data collection. This dataset is derived from a single research cruise using identical equipment, set-ups, and staff; therefore, it is internally consistent. Methods are employed to maintain data collection consistency aboard the platform. During mobilization, each piece of equipment is isolated to obtain internal and external offset measurements with respect to the survey platform. All the critical measurements are recorded manually and digitally entered into their respective programs. Offsets between the single-beam transducers and the Ashtech antenna reference point (ARP) were measured and accounted for in post-processing. Bar checks were performed as calibration efforts and accounted for any drift in the Marimatech Echosounder. Differential Geographic Positioning System (DGPS) coordinates were obtained using post-processing software packages developed by the National Oceanic and Atmospheric Administration (NOAA)/National Geodetic Survey (NGS) Online Positioning User Service (OPUS), National Aeronautics and Space Administration (NASA)/Jet Propulsion Laboratory (JPL) Online Positioning User Service (GIPSY), and Scripps Orbit and Permanent Array Center Online Positioning User Service (SCOUT). Boat trajectories were computed with PNAV v2.0 software by ASHTECH, Inc. These bathymetric data have not been independently verified for accuracy. This dataset was acquired on single research cruise in 2005 with identical hardware and software systems. These are complete post-processed X,Y,Z bathymetric data points from acoustic single-beam system collected in 2005 offshore from Wiggins Pass to Cape Romano, Florida. The GPS antenna and receiver acquisition configuration used at the reference station was duplicated on the survey vessel (rover). The base receiver and the rover receiver record their positions concurrently at 1Hz recording intervals throughout the survey. All processed measurements are referenced to the base station coordinates. GPS base or differential reference stations were operated within approximately 15 to 20 km of the survey area. Two new temporary ground-control points or benchmarks (surveyed to within 1 cm to 2 cm accuracy) were established throughout the study area for use as reference receiver sites using standard benchmarks procedures. The new benchmarks were surveyed using Ashtech Z-12, 12 channel dual-frequency GPS receivers. Full-phase carrier data were recorded on each occupied benchmark in Ashtech proprietary BIN format with daily occupations ranging from 6 to 12 hours. BIN files were then converted to RINEX-2 format for position processing. All static base station GPS sessions were submitted for processing to the online OPUS, GIPSY, and SCOUT system software. The computed base location results were entered into a spreadsheet to compute one final positional coordinate and error analysis for that base location. The final positional coordinate (latitude, longitude, and ellipsoid height) is the weighted average of all GPS sessions. For each GPS session, the weighted average was calculated from the total session time in seconds; therefore, longer GPS occupation times held more value than shorter occupation times. Results were computed relative to ITRF00 coordinate system. The established geodetic reference frame for the project was WGS84. Therefore, final reference coordinates used to process the rover data were transformed from ITRF00 to WGS84 using National Oceanic and Atmospheric Administration/National Geodetic Survey(NOAA/NGS) HTDP software v2.1. OPUS, GIPSY, and SCOUT results provide an error measurement for each daily solution. Applying these error measurements, the horizontal accuracy of the base station is estimated to be 0.04 (m) root mean squared (RMS). The kinematic (rover) trajectories were processed using PNAV v2.0, by ASHTECH, Inc. A horizontal error measurement, RMS is computed for each epoch. The horizontal trajectory errors for varied between 0 and 0.08(m). The combined horizontal error from base station coordinate solutions and rover trajectories range from 0 and 0.12 (m), with the average approximately 0.06 (m). 0.04 Static GPS data was processed using OPUS, GIPSY, and SCOUT software and kinematic GPS data was processed with PNAV v2.0 software by ASHTECH, Inc. and SANDS v1.2 The GPS antenna and receiver acquisition configuration used at the reference station was duplicated on the survey vessel (rover). The base receiver and the rover receiver record their positions concurrently at 1Hz recording intervals throughout the survey. All processed measurements are referenced to the base station coordinates. GPS base or differential reference stations were operated within approximately 15 to 20 km of the survey area. Five new temporary ground-control points or benchmarks (surveyed to within 1 cm to 2 cm accuracy) were established throughout the study area for use as reference receiver sites using standard benchmarks procedures. The new benchmarks were surveyed using Ashtech Z-12, 12 channel dual-frequency GPS receivers. Full-phase carrier data were recorded on each occupied benchmark in Ashtech proprietary BIN format with daily occupations ranging from 6 to 12 hours. BIN files were then converted to RINEX-2 format for position processing. All static base station GPS sessions were submitted for processing to the online OPUS, GIPSY, and SCOUT system software. The computed base location results were entered into a spreadsheet to compute one final positional coordinate and error analysis for that base location. The final positional coordinate (latitude, longitude, and ellipsoid height) is the weighted average of all GPS sessions. For each GPS session, the weighted average was calculated from the total session time in seconds; therefore, longer GPS occupation times held more value than shorter occupation times. Results were computed relative to ITRF00 coordinate system. The established geodetic reference frame for the project was WGS84. Therefore, final reference coordinates used to process the rover data were transformed from ITRF00 to WGS84 using National Oceanic and Atmospheric Administration/National Geodetic Survey(NOAA/NGS) HTDP software v2.1. OPUS, GIPSY, and SCOUT results provide an error measurement for each daily solution. Applying these error measurements, the vertical accuracy of the base station is estimated to be 0.04 (m) root mean squared (RMS). The kinematic (rover) trajectories were processed using PNAV v2.0, by ASHTECH, Inc. A vertical error measurement, RMS is computed for each epoch. The vertical trajectory errors for varied between 0 and 0.08(m). The combined vertical error from base station coordinate solutions and rover trajectories range from 0 and 0.14 (m), with the average approximately 0.08 (m). 0.08 Static GPS data was processed using OPUS, GIPSY, and SCOUT software and kinematic GPS data was processed with PNAV v2.0 software by ASHTECH, Inc. and SANDS v1.2 U.S. Geological Survey Unpublished material digital tabular data 2005 2005 ground condition USGS Offshore Naples bathymetry Original processed single-beam bathymetric data Data Acquisition - The sea-floor of Offshore from Wiggins Pass to Cape Romano was mapped by using an outboard motor boat, equipped with a high-precision Global Positioning Systems (GPS) coupled with a high-precision depth sounder. To accomplish this task, the SANDS (System for Accurate Nearshore Depth Surveying) system was developed by Mark Hansen (SPCMSC) and Jeff List (WHSC) of the U.S. Geological Survey. SANDS consists of two components, hardware and processing techniques. Survey track lines were spaced 500-meters apart and orientated shore normal along the project area. Track lines collected parallel to the coast (intersecting track lines) functioned to serve as a cross-check and to assess the relative vertical accuracy of the survey. Crossing lines are critical because they serve as a check on the internal accuracy of the data. Soundings were collected along each track line at 3 m spacing. In shallow areas, data were collected in a minimum of 0.3 m water depth except where there was potential damage to the bottom environment or the boat/motors. Reference GPS reference stations were operated on an USGS benchmark bench mark, typically located within approximately 15 km of the farthest single-beam track line. Reference and rover GPS receivers recorded the 12-channel full-carrier-phase positioning signals (L1/L2) from satellites via ASHTECH choke-ring antennas. The reference and rover receivers record their positions concurrently at 1-second(s) recording intervals throughout the survey. Boat motion was recorded at 50-millisecond (ms) intervals using a TSS Dynamic Motion Sensor 05 (TSS DMS-05). Bathymetric soundings were recorded at 10-ms intervals using an Marimatech EC-100 survey grade echo-sounder. The single-beam data were acquired using the hydrographic software HYPACK version 5. All data strings from the instruments were streamed in real time and recorded through HYPACK software. 2004 Raw sensor data files in ASCII text format and GPS Carrier-phase data in binary format. U.S. Geological Survey Mark Hansen Oceanographer mailing and physical

600 4th Street South

St. Petersburg FL 33701 USA (727) 502-8000 mhansen@usgs.gov Differentially Corrected Navigation Processing- The coordinate values of the reference GPS base stations obtained from OPUS were provided in the ITRF00 coordinate system. All survey data for the project was referenced to WGS84. Consequently, reference station coordinates were transformed to WGS84 coordinates using the NOAA/NGS software HTDP v1.3. The respective reference (base) station coordinates utilized as reference positions were imported into PNAV v2.0 software by ASHTECH, Inc. Differentially corrected rover trajectories were computed by merging the master and rover the GPS data. During processing, steps were taken to ensure that the trajectories between the base and rover were clean, resulting in fixed positions. By analyzing the graphs, trajectory maps, and processing logs that GrafNav produces for each GPS session, GPS data from satellites flagged by the program as having poor health or satellite time segments that had cycle slips could be excluded, or the satellite elevation mask angle could be adjusted to improve the position solutions. The final differentially corrected precise DGPS positions were computed for each rover GPS session and exported in ASCII text format. 2004 Boat trajectory data files in ASCII text format. Mark Hansen U.S. Geological Survey Oceanographer mailing and physical address

600 Fourth St. South

St. Petersburg FL 33701 727-502-8000 727-502-8032 mhansen@usgs.gov Single-beam Bathymetry Processing- All data were processed using SANDS version 1.2. The primary purpose of SANDS is to time synchronize processed trajectories, soundings, and heave/pitch/roll, then merges all data strings. SANDS applies latency errors, applies geometric corrections for antenna staff pitch and roll, applies geometric corrections for antenna transducer pitch and roll (beam correction), time synchronizes the GPS trajectory and HYPACK files for each GPS epoch, and converts WGS84 latitude/longitude coordinates to North American Datum of 1983 NAD83/GRS80 UTM coordinates (m), and applies a geoid separation based upon the NOAA/NGS Geoid03 model. Latitude/longitude conversion to UTM coordinates was accomplished using NOAA/NGS UTM v2.0 software. Intermediate output files are comma delimited text files containing: time of day (seconds of day), UTM X coordinate (m), UTM Y coordinate (m), ellipsoid height, orthometric height, smoothed raw depths, PNAV RMS value, and HYPACK line number. A header line indicates the attributes entry for each column. Completely processed final XYZ files representing sea-floor elevations. 2004 Final processed bathymetry data files in ASCII text format. Mark Hansen U.S. Geological Survey (USGS) - St. Petersburg Coastal and Marine Science Center Oceanographer mailing and physical address

600 4th Street South

St. Petersburg FL 33701 USA 727-502-8000 727-502-8032 mhansen@usgs.gov The final processed bathymetry files were reformatted for publication. UTM coordinate were converted to latitude/longitude using NOAA/NGS UTMS v2.0 software. 2015 DSxxx_NaplesOffshore_WGS84_NAVD88-G03_SB.xyz.txt, DSxxx_NaplesOffshore_WGS84_NAVD88-G03_SB.xyz.shp U.S. Geological Survey Mark Hansen Oceanographer mailing and physical

600 4th Street South

St. Petersburg FL 33701 USA (727) 502-8000 (727) 502-8032 mhansen@usgs.gov Added keywords section with USGS persistent identifier as theme keyword. 20201013 U.S. Geological Survey VeeAnn A. Cross Marine Geologist Mailing and Physical

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov Point Point 186023 0.0000001 0.0000001 decimal degrees WGS84-G1150 WGS84 6378137.0 298.257223563 NAVD88 0.01 meters Explicit depth coordinate included with horizontal coordinates DS1031_NaplesOffshore_WGS84_NAVD88-G03_SB.xyz.txt, DS1031_NaplesOffshore_WGS84_NAVD88-G03_SB.xyz.shp Post-processed, area-specific X,Y,Z attributed single-beam bathymetry data. USGS FID Field ID USGS 0 186023 longitude WGS84(G1150) x-coordinate (easting) of sample point NOAA/NGS UTMS -81.90113 -81.68651 decimal degrees 0.00000001 latitude WGS84(G1150) y-coordinate (northing) of sample point NOAA/NGS UTMS 25.81020 26.24966 decimal degrees 0.00000001 z-ellipsoid height WGS84(G1150) ellipsoid height of sample point, in meters SANDS -33.537 -24.413 meters 0.001 z-NAVD88 Orthometric height of sample point, in meters. Relative to geoid model Geoid99. SANDS -10.294 -0.816 meters 0.001 Mark E. Hansen U.S. Geological Survey Oceanographer mailing and physical address

600 Fourth St. South

St. Petersburg FL 33701 (727) 502-8000 (727) 502-8032 mhansen@usgs.gov Single-beam bathymetry, vessel (R/V Streeterville) acquired, bathymetric data. The data have no explicit or implied guarantees. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. 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 or the U.S. Government shall not be held liable for improper or incorrect use of the data described and/or contained herein. ASCII https://pubs.usgs.gov/ds/1031/download/CRomano/soundings/DS1031-CRomano_WGS84_NAVD88-G03_SB_txt.xyz.zip none 20201013 U.S. Geological Survey Mark Hansen Oceanographer mailing and physical

600 4th Street South

St. Petersburg FL 33701 USA (727) 502-8000 mhansen@usgs.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 The U.S. Geological Survey requests that it be referenced as the originator of this dataset in any future products or research derived from these data. None Unclassified None