GPI Geospatial Inc., operating under the authority of Miami-Dade County Aviation Department, as per contract number E15-MDAD-01, has been tasked by Miami Dade County's Information Technology Department (ITD) to provide LiDAR data for 615 square miles, including the classification of the data and the creation of hydro-enforced Digital Elevation Model (DEM). GPI Geospatial has created a file geodatabase named GPI_LIDAR_2018_GDB. The project deliverables included fully compliant LAS v1.4 with georeferenced information included in LAS header. The LAS files have 16-bit intensity values with GPS times recorded as Adjusted GPS Time, at a precision sufficient to allow unique timestamps for each return. The LiDAR classification followed the ASPRS Standards LIDAR Point Classes: 1 = Unclassified; 2 = Ground (or Bare Earth); 3 = Low Vegetation 0 - 5 ft; 4 Medium Vegetation 5 - 25 ft; 5 = High Vegetation 25 ft-above; 6 Building; 7 = Low Point (noise); 8 = Model Key-point (mass point); 9 = Water; 10 = Ignored Ground; 17 = Bridges; 18 = High Noise. Mass points deliverable LAS v1.4 with georeferenced information included in LAS header. The mass point files have 16-bit intensity values with GPS times recorded as Adjusted GPS Time, at a precision sufficient to allow unique timestamps for each return. The mass points are produced at a 5ft grid of the class 2 bare earth data. Mass points files are delivered as standalone files outside the geodatabase The LAS files and mass points were tiled, without overlap, following FDOR tiling grid with 16 sub-tiles provided by Miami Dade County's Information Technology Department (ITD). The Bare-earth 5-foot DEM is a 32-bit floating point raster format in ARCGIS GRID Raster format in compliance with USGS LIDAR Base Specifications as derived from mass points. The DEM file is a large mosaic delivered as one ARCGIS GRID file covering the entire area of interest. The DEM file is named DEM_5ft_2018 and will be located under the delivery folder named: GPI_DEM_2018. The GPI_LIDAR_2018_GDB.gdb file includes Breaklines (WATERBODIES, HYDROGRAPHICFEATURE) FLIGHTLINES, FOOTPRINT, CONTROL AND CHECKPOINTS. Extracted terrain breaklines in NAVD88, to be delivered in line feature class, part of GPI_LIDAR_2018_GDB.Digital and paper copies of Surveyor?s Report signed and sealed. The lidar point, DEM, and breakline data were provided to the Office for Coastal Management (OCM) by the Miami-Dade Information Technology Department (ITD) for inclusion in the Data Access Viewer (DAV). In addition to this lidar point data, the DEM data that were created from the lidar point data and the breaklines are also available. These data are available for custom download at the links provided in the URL section of this metadata record. This data set is an LAZ (compressed LAS) format file containing LIDAR point cloud data.