University of Florida GeoPlan Center 20130101 raster digital data Gainesville, FL University of Florida GeoPlan Center State of Florida http://www.fgdl.org/metadataexplorer/explorer.jsp This data set represents a five meter cell size Digital Elevation Model (DEM) covering the State of Florida. The elevation units are expressed in feet. The vertical datum is NAVD88, meters, and the projection is Albers Equal Area Conic HARN, meters. The DEM was created by mosaicking data from 4 different sources, with the following order of priority: 1) NWFWMD District DEM 2) FLIDAR Coastal DEM 3) Statewide FWC DEM 4) Contour Derived DEM. The data was created to serve as base information for use in GIS systems for a variety of planning and analytical purposes. 20120101 publication date Complete As needed -88.510128 -78.638565 31.481272 24.054586 None Digital Elevation Model (DEM) ISO 19115 Topic Categories elevation None Florida None The Florida Geographic Data Library is a collection of Geospatial Data compiled by the University of Florida GeoPlan Center with support from the Florida Department of Transportation. GIS data available in FGDL is collected from various state, federal, and other agencies (data sources) who are data stewards, producers, or publishers. The data available in FGDL may not be the most current version of the data offered by the data source. University of Florida GeoPlan Center makes no guarantees about the currentness of the data and suggests that data users check with the data source to see if more recent versions of the data exist. Furthermore, the GIS data available in the FGDL are provided 'as is'. The University of Florida GeoPlan Center makes no warranties, guaranties or representations as to the truth, accuracy or completeness of the data provided by the data sources. The University of Florida GeoPlan Center makes no representations or warranties about the quality or suitability of the materials, either expressly or implied, including but not limited to any implied warranties of merchantability, fitness for a particular purpose, or non-infringement. The University of Florida GeoPlan Center shall not be liable for any damages suffered as a result of using, modifying, contributing or distributing the materials. A note about data scale: Scale is an important factor in data usage. Certain scale datasets are not suitable for some project, analysis, or modeling purposes. Please be sure you are using the best available data. 1:24000 scale datasets are recommended for projects that are at the county level. 1:24000 data should NOT be used for high accuracy base mapping such as property parcel boundaries. 1:100000 scale datasets are recommended for projects that are at the multi-county or regional level. 1:125000 scale datasets are recommended for projects that are at the regional or state level or larger. Vector datasets with no defined scale or accuracy should be considered suspect. Make sure you are familiar with your data before using it for projects or analysis. Every effort has been made to supply the user with data documentation. For additional information, see the References section and the Data Source Contact section of this documentation. For more information regarding scale and accuracy, see our webpage at: http://geoplan.ufl.edu/education.html University of Florida GeoPlan Center Russell Watkins GIS Specialist mailing and physical

431 Architecture Building

Gainesville FL 32611 n/a University of Florida - GeoPlan Center Version 6.2 (Build 9200) ; Esri ArcGIS 10.7.1.11595 GeoPlan relied on the integrity of the attribute information within the original data. This data is provided 'as is'. GeoPlan relied on the integrity of the original data layer's topology This data is provided 'as is' by GeoPlan and is complete to our knowledge. This data is provided 'as is' and its horizontal positional accuracy has not been verified by GeoPlan This data is provided 'as is' and its vertical positional accuracy has not been verified by GeoPlan 0 onLine Spatial and Attribute Information The following source DEMs were used to create a statewide DEM. The sources are listed in order of priority: 1) Northwest Florida Water Management District (NWFWMD) DEM description: Received from NWFWMD district in 2012. This DEM was created from a variety of different sources, metadata from each source used by NWFWMD is included with the FGDL download and is located in the following folder: ...\meta\nwfwmd cell size: 2, 2 (meters) pixel type: floating point elevation units: feet elevation datum: NAVD88 2) NOAA FLIDAR Coastal DEM description: This DEM is based on coastal Lidar data sourced from the NOAA Coastal Services Center. Metadata from each source used by NOAA is included with the FGDL download and is located in the following folder: ...\meta\noaa cell size: 5.4329891, 5.4329891 (meters) pixel type: unsigned integer elevation units: inches elevation datum: NAVD88 3) Florida Fish and Wildlife Conservation Commission (FWC) Florida Statewide 5-Meter DEM description: this is a statewide DEM that has some gaps. The DEM was received from FWC in 2012. Note: the source vertical datum was NGVD29, which was converted to NAVD88. Original metadata for this source DEM is included with the FGDL download and is located in the following folder: ...\meta\fwc cell size: 5.4329891, 5.4329891 (meters) pixel type: floating point elevation units: meters elevation datum: NGVD29 4) Contour Derived DEM description: This DEM is based on 2ft contours from the coastal LiDAR project. The biggest portion of this source data is around Lake Okeechobee, where data was from Merrick. For more information on the contour data please see FGDL layers prefixed with "TOPO2FT_". cell size: 5.4329891, 5.4329891 (meters) pixel type: unsigned integer elevation units: inches elevation datum: NAVD88 ============================================================================= Processing steps for statewide DEM: 20121018 Using ArcGIS 10.0, the following process was executed to create the statewide DEM. During any command that was executed the following environment settings were used: set snap raster as NOAA FLIDAR Coastal DEM set cell size = NOAA FLIDAR Coastal DEM (5.4329891, 5.4329891) -Copy Raster command was executed to resample NWFWMD District DEM from 2 meter cells to 5 meter cells. Converted raster from floating point to integer and changed units to inches. -Mosaic to New Raster command executed to combine the NWFWMD District DEM and the FLIDAR Coastal DEM. The NWFWMD District DEM was given priority. -Used Raster Calculator to convert the FWC DEM to integer and used the following formula (("fwc_mos88" * 39.3696) + 0.5) to convert to inches (please note: the 0.5 was added to account for ArcMaps rounding rules) -Mosaic to New Raster command executed to combine the previous mosaic with processed FWC DEM. Priority was given to the mosaic. -Used Contour to DEM tool to create a DEM of the area where gaps existed. The 2ft contours from the coastal LiDAR project were used. -Mosaic to New Raster command executed to combine previous mosaic with contour derived DEM, priority was given to previous mosaic. -Set all negative (-302 to -1) values to null -Created a water grid using water areas from 5 Water Management District Landuse/Landcover layers where: - LEVEL1='WATER' - SFWMD where FLUCCS = 1660 (HOLDING PONDS) - SRWMD where FLUCCS = 8160 (CANALS AND LOCKS) - NWFWMD where FLUCCS = 8160 (CANALS AND LOCKS) -Reclassed all water grid values to -1 -Mosaic to New Raster command executed to combine the water grid and previous mosaic. -The final output raster feature class was named flidar_mosaic_in and was copied into a 9.3.1 file geodatabase with the following properties: pixel units: inches single band 16bit signed integer cell size: 5.4329891, 5.4329891 meters projection: Albers HPGN vertical datum: NAVD88 -The final product (flidar_mosaic_in) was converted to feet, centimeters, and meters and named flidar_mosaic_ft, flidar_mosaic_cm, flidar_mosaic_m Notes: -The Northwest Florida Water Management District DEM was considered the highest order data source based on a nominal 2-meter horizontal resolution, which is closer to the native resolution of the original coastal Lidar data collection than all other sources used in this mosaic. Vertical values for the NWFWMD DEM are recorded in feet, while the vertical accuracy for the original Lidar data collection is reported in inches. Therefore, the decision was made to standardize all data sets and construct the mosaic with inches as the vertical unit. -No smoothing was done when executing mosaic commands. In some areas where DEMs come together there are discrepancies, typically these differences are minimal and can't be seen at all when zooming out beyond 1:240K. -A feature class representing the source data used for the DEM can be found in the same file geodatabase as the DEM and called flidar_mosaic_source. -The processing for this data was done primarily using ArcGIS Desktop 10.0, all data is delivered in a 9.3.1 compliant File GeoDatabase. GeoPlan Raster Grid Cell Albers Conical Equal Area [Florida Geographic Data Library] 24.0 31.5 -84.0 400000.0 0.0 coordinate pair 0.000000004429812072714868 0.000000004429812072714868 meter D North American 1983 HARN GRS 1980 6378137.0 298.257222101 FLIDAR_MOSAIC_FT FLIDAR_MOSAIC_FT University of Florida GeoPlan Center OBJECTID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Value Elevation in feet. GeoPlan Count Count of cells with the same elevation value. GeoPlan Florida Geographic Data Library (FGDL) mailing

431 Architecture PO Box 115706

Gainesville Florida 32611-5706 US Mailing list for FGDL: http://www.fgdl.org/fgdl-l.html FGDL Frequently Asked Questions: http://www.fgdl.org/fgdlfaq.html For FGDL Software: http://www.fgdl.org/software.html Technical Support: http://www.fgdl.org/fgdlfeed.html Web site: http://www.fgdl.org DOWNLOADABLE DATA The Florida Geographic Data Library is a collection of Geospatial Data compiled by the University of Florida GeoPlan Center with support from the Florida Department of Transportation. GIS data available in FGDL is collected from various state, federal, and other agencies (data sources) who are data stewards, producers, or publishers. The data available in FGDL may not be the most current version of the data offered by the data source. University of Florida GeoPlan Center makes no guarantees about the currentness of the data and suggests that data users check with the data source to see if more recent versions of the data exist. Furthermore, the GIS data available in the FGDL are provided 'as is'. The University of Florida GeoPlan Center makes no warranties, guaranties or representations as to the truth, accuracy or completeness of the data provided by the data sources. The University of Florida GeoPlan Center makes no representations or warranties about the quality or suitability of the materials, either expressly or implied, including but not limited to any implied warranties of merchantability, fitness for a particular purpose, or non-infringement. The University of Florida GeoPlan Center shall not be liable for any damages suffered as a result of using, modifying, contributing or distributing the materials. A note about data scale: Scale is an important factor in data usage. Certain scale datasets are not suitable for some project, analysis, or modeling purposes. Please be sure you are using the best available data. 1:24000 scale datasets are recommended for projects that are at the county level. 1:24000 data should NOT be used for high accuracy base mapping such as property parcel boundaries. 1:100000 scale datasets are recommended for projects that are at the multi-county or regional level. 1:125000 scale datasets are recommended for projects that are at the regional or state level or larger. Vector datasets with no defined scale or accuracy should be considered suspect. Make sure you are familiar with your data before using it for projects or analysis. Every effort has been made to supply the user with data documentation. For additional information, see the References section and the Data Source Contact section of this documentation. For more information regarding scale and accuracy, see our webpage at: http://geoplan.ufl.edu/education.html 20200302 University of Florida GeoPlan Center Russell Watkins GIS Specialist mailing and physical

431 Architecture Building

Gainesville FL 32611 n/a FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time