Basic Hydrographic Survey 2004 W00636 Florida Southwest Florida Tampa Bay 20000 2001-01-01 2004-12-31 2022-11-08 ESD-PHB-22 US Geological Survey Mark Hansen SBES Unknown Unknown Pacific Hydrographic Branch meters Any revisions to the Descriptive Report (DR) applied during office processing are shown in red italic text. The DR is maintained as a field unit product, therefore all information and recommendations within this report are considered preliminary unless otherwise noted. The final disposition of survey data is represented in the NOAA nautical chart products. All pertinent records for this survey are archived at the National Centers for Environmental Information (NCEI) and can be retrieved via https://www.ncei.noaa.gov/. Products created during office processing were generated in NAD83 UTM 17N, MLLW. All references to other horizontal or vertical datums in this report are applicable to the processed hydrographic data provided by the field unit. North American Datum 1983 Mean Lower Low Water VDatum Projected UTM 17 2022-11-28 CC BY (External Source Data) CC-BY-4.0 https://creativecommons.org/licenses/by/4.0/ https://creativecommons.org/licenses/by/4.0/legalcode This data is licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0). Attribution is included in this report. 2022-11-28 Pacific Hydrographic Branch Mark Hansen Oceanographer U.S. Geological Survey PHB High resolution seafloor mapping was conducted in Tampa Bay between 2001 and 2004 as part of the USGS CMGP Tampa Bay Study. A major focus of the Tampa Bay Study was to investigate sediments and their associated contaminants, and to develop a bay wide circulation model to determine the routes of sediment transport. Before models could be accurately applied, updated seafloor elevation mapping data was needed for the entire bay. Baseline maps provide the physical context, background and baseline information for other project research, monitoring, and modeling activities. Seafloor elevation mapping provides critical information for development of circulation, hydrologic, sediment transport, water quality, and urbanization integrated modeling. Geographic information system data products include XYZ data, bathymetric contours, and USGS quadrangle map. Upon data ingestion at the Processing Branch, the NOAA's VDatum v4.4.2 was used to transform the data points (XYZ data) from World Geodetic System of 1984 (WGS84) datum to North American Datum of 1983 (NAD83) reference frame and MLLW. The XYZ file was then gridded into a 4-meter surface using CARIS Base Editor 5.5. The report does not include data acquisition and processing information. All data were reviewed for DTONs and none were identified in this survey. U.S. Geological Survey https://doi.org/10.3133/ds1031 The survey is partially adequate to supersede previous data. This survey does not meet feature detection standards, therefore is not adequate to update or disprove charted features.