Mark Hansen 2000 version 1 map http://sofia.usgs.gov/projects/bathymetry/ The map shows the tracklines for historical bathymetric data for Florida Bay. The areas on the map are linked to the corresponding data sets which contain values for X (easting), Y (northing), Z (elevation), and the RMS set to 0.0. Detailed, high-resolution maps of Florida Bay mudbank elevations are needed to understand sediment dynamics and provide input into water quality and circulation models. The bathymetry of Florida Bay has not been systematically mapped in nearly 100 years, and some shallow areas of the bay have never been mapped. Numerical circulation and sediment transport models being developed for the South Florida Ecosystem Restoration Program are being used to address water quality issues in Florida Bay. Digitizing the historical shoreline and bathymetric data for comparison with modern data provides information on sedimentation rates within the Bay. 1889 1890 ground condition Complete Unknown -81.11667 -80.36667 25.25 24.733333 none bathymetry hydrology mapping geography ISO 19115 Topic Category environment imageryBaseMapsEarthCover inlandWaters oceans 007 010 012 014 Department of Commerce, 1995, Countries, Dependencies, Areas of Special Sovereignty, and Their Principal Administrative Divisions, Federal Information Processing Standard (FIPS) 10-4, Washington, DC, 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, DC, 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 Miami-Dade County Monroe County USGS Geographic Names Information System Blackwater Sound Buchanan Keys Calusa Keys Clive Key Flamingo Florida Bay Everglades National Park Grassy Key Joe Bay Long Key Lower Matecumbe Key Pelican Keys Plantation Key Rock Harbor Sandy Key Tavernier Upper Matecumbe Key West Lake none Schooner Key Central Everglades Florida Keys none The U.S. Geological Survey must be referenced as the originator of the data set in any future products or research derived from these data. Mark Hansen U.S. Geological Survey mailing and physical address

600 Fourth Street South

St. Petersburg FL 33701 USA 727 803-8747 x 3036 727 803-2030 mhansen@usgs.gov http://sofia.usgs.gov/publications/ofr/00-347/1890trk.html location of 1890's tracklines GIF Nancy T. DeWitt assisted in the bathymetric surveys and data processing. L. Thornton processed the historical data and provided GIS support. data are in ASCII tabular text files Hansen, Mark DeWitt, Nancy T. 2000 report USGS Open-File Report OFR 00-347 St. Petersburg, FL U.S. Geological Survey http://sofia.usgs.gov/publications/ofr/00-347/ not applicable No data were collected for the Lake Ingraham and Madeira Key quads in 1890. For data format consistencies, RMS values for the 1890's data set are equal to 0.0. The horizontal positions of each data point were transformed from Latitude/Longitude to UTM (Zone 17) XY coordinates using NOAA/NGS software UTMSv1.0. 0.05 unavailable For data format consistencies, RMS values for the 1890's data set are equal to 0.0. Vertical positions were referenced to MLW (Mean Low Water). According to NOAA tidal datum information, NAVD88 is approximately 0.41m (1.35 ft) above MLW in the Florida Bay area. The 1.35 feet average is calculated using the elevation information from several tidal benchmarks throughout the Florida Keys. These tidal benchmarks are published by the National Geodetic Survey and can be located on their website http://www.ngs.noaa.gov/cgi-bin/ngs_opsd.prl/. Five tidal benchmarks were chosen from four different U.S. Geological Quadrangle locations including Blackwater Sound, Plantation Key, Long Key and Grassy Key. To compare the 1890's values to NAVD88 add 1.35 ft. to the depth values. The historical bathymetric data obtained form NOAA/NOS archives were digitized using an Altech Digitizer. The data was georeferenced from the digitizer coordinates to geographic coordinates (latitude and longitude) using archived NGS control points on NAD 83. 199910 Mark Hansen U.S. Geological Survey mailing and physical address

600 Fourth Street South

St. Petersburg FL 33701 USA 727 803-8747 x 3036 727 803-2030 mhansen@usgs.gov Florida Bay Universal Transverse Mercator 17 0.9996 -81 0 500000 0 Coordinate Pair 0.01 0.01 meters North American Datum of 1983 Geodetic Reference System 80 6378137 298.257 Mean low water .01 meters Explicit depth coordinate included with horizontal coordinates The map shows the lines of data collection and each quad is linked to its corresponding data file. USGS personnel Heather S.Henkel U.S. Geological Survey mailing address

600 Fourth St. South

St. Petersburg FL 33701 USA 727 803-8747 ext 3028 727 803-2030 hhenkel@usgs.gov Florida Bay 1890's trackline map The data have no implied or explicit guarantees GIF http://sofia.usgs.gov/publications/ofr/00-347/1890trk.html Data may be downloaded from the SOFIA website None 20070611 Heather Henkel U.S. Geological Survey mailing and physical address

600 Fourth Street South

St. Petersburg FL 33701 USA 727 803-8747 ext 3028 727 803-2030 sofia-metadata@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998