Rangley C. Mickey Robert L. Jenkins III P. Soupy Dalyander David Thompson Nathaniel Plant Joseph Long 20200228 Raster Digital Data U.S. Geological Survey Data Release doi:10.5066/P91ALL6C St. Petersburg, FL U.S. Geological Survey https://doi.org/10.5066/P91ALL6C The model output of bathymetry and topography values resulting from a deterministic simulation at Dauphin Island, Alabama, as described in USGS Open-File Report 2019–1139 (https://doi.org/10.3133/ofr20191139), are provided here. For further information regarding model input generation and visualization of model output topography and bathymetry refer to Mickey and others (2020). These data were generated for the Delft 3D, EDGR, and XBeach model to indicate how Dauphin Island evolved over the span of approximately 10 years. The model-derived topographic and bathymetric digital elevation model (DEM) is included in the download file, Final_Model_DEM.zip as a Network Common Data Form (NetCDF) file. This dataset consists of Federal Geographic Data Committee (FGDC) metadata and a NetCDF file containing the following variables: coordinates of the model grid (Easting and Northing) and the final bathymetry/topography elevation (z) model grid. 20040917 20150101 ground condition Complete As Needed -88.4755524520560 -87.6711236123306 30.6940751670340 29.9718025521135 USGS Metadata Identifier USGS:24ebcb28-efba-442f-8555-b146db1a4e15 ISO 19115 Topic Category oceans elevation geoscientificInformation USGS Thesaurus marine geology geomorphology topography bathymetry digital elevation models coastal processes sea-level change sediment transport ocean waves tides (oceanic) None U.S. Geological Survey USGS St. Petersburg Coastal and Marine Science Center SPCMSC alongshore transport decadal morphologic change DEM barrier island Geographic Names Information System (GNIS) Content Gulf of Mexico Alabama North America United States Dauphin Island None. Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the originator of the dataset. U.S. Geological Survey, Southeast Region Nathaniel G Plant Research Oceanographer mailing address

600 4Th Street South

St. Petersburg FL 33701 United States 727-502-8072 nplant@usgs.gov U.S. Geological Survey Microsoft Windows 7 Enterprise; MATLAB R2016b Mickey, R.C., Long, J.W., Dalyander, P.S., Jenkins, R.L., III, Thompson, D.M., Passeri, D.L., and Plant, N.G. 2020 U.S. Geological Survey Open-File Report 2019-1139 Reston, VA U.S. Geological Survey https://doi.org/10.3133/ofr20191139 Jenkins, R.L., III, Long, J.W., Dalyander, P.S., Thompson, D.M., and Mickey, R.C., 2020 U.S. Geological Survey Open-File Report 2020-1011 Reston, VA U.S. Geological Survey https://doi.org/10.3133/ofr20201011 The final DEM illustrates the hindcast model-derived topographic and bathymetric elevations in all model grid cells. This DEM contains the complete final model grid elevation. 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 carefully for additional details. This DEM contains the final model topographic and bathymetric elevations. Within the Delft 3D, EDGR, and XBeach models, the coordinates are in Universal Transverse Mercator (UTM) Zone 16 North. Vertical datum is the North American Vertical Datum of 1988 (NAVD88) with an estimated resolution of 0.01 meters (m). The hindcast model simulates morphologic change that results from hydrodynamic impacts and sediment transport with Delft 3D, XBeach, and an empirical dune growth model (EDGR). The Delft 3D modelling portion was set up following the description provided in Jenkins and others (2020). Following the steps provided in the XBeach user manual (https://xbeach.readthedocs.io/en/latest/user_manual.html), the model was set up using a params.txt file. Significant wave heights, peak wave periods, and water levels were provided from the synthetic storm scenario described in OFR 2019-1139 by Mickey and others (2020). The EDGR dune growth model was executed between the Delft 3D and XBeach model simulations and the model was set up following the description in Mickey and others (2020). The resulting topographic and bathymetric elevations, extracted at the end of each scenario, were output into netCDF files. 2018 Rangley Mickey U.S. Geological Survey Oceanographer Mailing

600 4th Street S

St. Petersburg Florida 33701 USA (727)-502-8115 Model bathymetric and topographic outputs were extracted in Mathworks MATLAB (R2016b) with functions included in the OpenEarth toolbox (provided by Deltares at, https://publicwiki.deltares.nl/display/OET/Tools). The resulting bathymetric and topographic elevations from the model grid were then packaged into a NetCDF file, using the export functions available in MATLAB, for inclusion in this data release. 2018 Rangley Mickey U.S. Geological Survey Oceanographer mailing

600 4th Street South

Saint Petersburg Florida 33701 727-502-8115 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 Gulf of Mexico Raster Grid cell 1367 656 1 Universal Transverse Mercator 16 0.999600 -87.000000 0.000000 500000.000000 0.000000 Row and Column 1 1 meters North American Datum of 1983 Geodectic Reference System 80 6378137.0 298.25722210100002 North American Vertical Datum of 1988 0.0001 meters attribute values The CF-compliant metadata in the header of the NetCDF file provides spatial information for projecting the data into a geographic information system. It also provides information about the conventions used for attributes in the dataset. 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. U.S. Geological Survey, Southeast Region Nathaniel G Plant Research Oceanographer mailing address

600 4Th Street South

St. Petersburg FL 33701 United States 727-502-8072 727-502-8182 nplant@usgs.gov Final_DEM.nc This digital publication was prepared by an agency of the United States Government. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, nor shall the act of distribution imply any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and (or) contained herein. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. NetCDF NetCDF version 4.3.3.1 Final_DEM.nc is a NetCDF file that contains the final model topographic and bathymetric elevations and coordinate information, in meters. The file is zipped and must be unzipped before use. https://coastal.er.usgs.gov/data-release/doi-P91ALL6C/data/Final_Model_DEM.zip None. No fees are applicable for obtaining the dataset. 20201013 Rangley C Mickey U.S. Geological Survey, Southeast Region Oceanographer mailing address

600 4Th Street South

St. Petersburg FL 33701 United States 727-502-8115 727-502-8182 rmickey@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 None None