gov.noaa.nmfs.inport:64464 eng UTF8 dataset Elevation OCM Partners resourceProvider NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information pointOfContact 2026-04-30T00:00:00 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data ISO 19115-2:2009(E) point 70107640612 NAD83(2011) / UTM zone 17N2008-11-12publicationEuropean Petroleum Survey Grouphttps://apps.epsg.org/api/v1/CoordRefSystem/6346/export/?format=gmlurn:ogc:def:crs:EPSG:63466.18.3 2018 Miami-Dade ITD Lidar: Miami-Dade County, FL fl2018_miamidade_m9271_metadata 2019-10-04 publication NOAA/NMFS/EDM 64464 https://www.fisheries.noaa.gov/inport/item/64464 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9272/details/9272 WWW:LINK-1.0-http--link Customized download of associated DEM data Link to custom download, from the Data Access Viewer (DAV), the raster Digital Elevation Model (DEM) data that were created from this lidar data set. download https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9271/supplemental/MDC_LiDAR_2018_SMR_GPI_10042019.pdf WWW:LINK-1.0-http--link Dataset report Link to data set report. download https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9271/breaklines/ WWW:LINK-1.0-http--link Breaklines Link to the data set breaklines. download https://coast.noaa.gov/dataviewer/ WWW:LINK-1.0-http--link NOAA's Office for Coastal Management (OCM) Data Access Viewer (DAV) The Data Access Viewer (DAV) allows a user to search for and download elevation, imagery, and land cover data for the coastal U.S. and its territories. The data, hosted by the NOAA Office for Coastal Management, can be customized and requested for free download through a checkout interface. An email provides a link to the customized data, while the original data set is available through a link within the viewer. download 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 contains point cloud data(' in LAZ (compressed LAS) format', ''). The data may have been reprojected or otherwise modified from the original data in an automated process. Disregard projection information in this abstract and refer to the spatial reference section. GPI Geospatial, 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. GPI Geospatial Inc. The custom download may be cited as National Oceanic and Atmospheric Administration (NOAA) Digital Coast Data Access Viewer. Charleston, SC: NOAA Office for Coastal Management. Accessed 2026-05-08 at https://coast.noaa.gov/dataviewer. completed NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information pointOfContact NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information custodian asNeeded https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9271/supplemental/fl2018_miamidade_m9271.kmz This graphic displays the footprint for this lidar data set. KML EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION EARTH SCIENCE > OCEANS > COASTAL PROCESSES > COASTAL ELEVATION theme Global Change Master Directory (GCMD) Science Keywords 23.3 CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > FLORIDA VERTICAL LOCATION > LAND SURFACE place Global Change Master Directory (GCMD) Location Keywords 23.3 LIDAR > Light Detection and Ranging instrument Global Change Master Directory (GCMD) Instrument Keywords 23.3 Airplane > Airplane platform Global Change Master Directory (GCMD) Platform Keywords 23.3 METADATA beach erosion theme Continent > North America > United States Of America > Florida > Miami-Dade County place Lidar - partner (no harvest) project InPort otherRestrictions This data set was compiled dynamically. It will be removed 10 days after 2026-05-08 from the NOAA system. Cite As: OCM Partners, [Date of Access]: 2018 Miami-Dade ITD Lidar: Miami-Dade County, FL [Data Date Range], https://www.fisheries.noaa.gov/inport/item/64464. NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose. otherRestrictions This data set was compiled dynamically. It will be removed 10 days after 2026-05-08 from the NOAA system. Access Constraints: None otherRestrictions This data set was compiled dynamically. It will be removed 10 days after 2026-05-08 from the NOAA system. Use Constraints: Users should be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations. otherRestrictions This data set was compiled dynamically. It will be removed 10 days after 2026-05-08 from the NOAA system. Distribution Liability: Translation of files to formats other than those described here is the sole responsibility of individuals downloading the data. Any conclusions drawn from the analysis of this information are not the responsibility of NOAA, the Office for Coastal Management or its partners. unclassified 2018 Miami-Dade ITD Lidar DEM: Miami-Dade County, FL NOAA/NMFS/EDM 64424 crossReference vector eng; US elevation Microsoft Windows 10 pro; Esri ArcGIS 10.6.1.9270 -80.88252 -80.105244 25.391896 25.978256 | Currentness: Ground Condition 2018-04-25 2018-12-05 Zip Zip LAS/LAZ - LASer Zip NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information distributor https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9271/details/9271 WWW:LINK-1.0-http--link Customized Download Create custom data files by choosing data area, product type, map projection, file format, datum, etc. A new metadata will be produced to reflect your request using this record as a base. Change to an orthometric vertical datum is one of the many options. download https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9271/index.html WWW:LINK-1.0-http--link Bulk Download Bulk download of data files in LAZ format, geographic coordinates, orthometric heights. Note that the vertical datum (hence elevations) of the files here are different than described in this document. They will be in an orthometric datum. download dataset Horizontal Positional Accuracy ASPRS does not require horizontal accuracy testing of LiDAR-derived elevation products. Vertical Positional Accuracy This product meets or exceeds the stated specifications for the state of Florida. The Vertical Accuracy for LiDAR data over well-defined surfaces was tested 0.204 feet (6.2 cm) RMSE as set forth in the FGDC Geospatial Positioning Accuracy Standards, Part 3: NSSDA. 65 check points were distributed throughout the project area. See vendor's report. Completeness Report Data set has been visually inspected. All data produced strives to meet National Mapping Accuracy Standards (NMAS). Conceptual Consistency See vendor's report The project was divided in two phases: Collection and classification of LiDAR data; and creation of 5-foot cell spaced hydro enforced mosaic DEM of the project area. The LiDAR data was collected utilizing a Riegl VQ-1560i in a Cessna 206 from an approximate altitude of 4,200 feet above ground level, at an approximate ground speed of 110 knots at a pulse rate repetition of 2000 kHg, resulting in an average of 15.2 points per square meter single swath and 20 plus with the 55% overlap. To get under the cloud ceiling some flight lines were collected at 2,000 feet agl at 110 knots. These lines were collected at 29.12 points per square meter single swath. The sensor used a 60-degree field of view. The project was flown to have 55 percent overlap between swaths. The Global Positioning System (GPS) data were processed using Applanix POSPac Mapping Suite version 8.3 using Smart Base method and single base methods. A fixed bias carrier phase solution was computed in forward and reverse directions. The LiDAR collection took place when Positional Dilution of Precision (PDOP) was at or below 3. Occasionally, the PDOP rose slightly above 3. This had no effect on the data. The GPS trajectory was combined with the IMU data using the Applanix POSPac software. The resulting Smoothed Best Estimate of Trajectory (SBET) was exported and used in Riegl RiProcess software to compute the laser mass point positions in Northing, Easting, and Elevations coordinates. The raw laser data were merged with the SBET using Riegl RiProcess software. The data set was processed using RiProcess, RiAnalyze, and RiWorld software where each flight line was processed to a point cloud. The data was adjusted flight line to flight line using Riegl’s Scan Data Adjustment tool to ensure a proper relative calibration match between flight lines. Each flight was checked for project coverage, data gaps between overlapping flight lines, point density and then exported in LAS 1.4 format. The entire project was collected without gaps. The LAS files were projected to the NAD_1983_2011_StatePlane_Florida_East_FIPS_0901_Feet and North American Vertical Datum of 1988 (NAVD88). Ellipsoidal heights were converted to orthometric heights using the current Geiod12B. The LAS files were imported to TerraSolid, LTD TerraScan software to be classified to bare earth ground and later feature coded to USGS specifications. The LAS files contain 12 classifications: 1 = unclassified; 2 = ground; 3 = low veg; 4 = med veg; 5 = high veg; 6 = building; 7 = noise points; 9 = water; 10 = buffered ground points surrounding breaklines; 12 = overlap; 17 = overpass and bridges; 18 = high noise. The LiDAR data was run through an automated ground and building classification using terrascan software. A manual check of the building classification was done. The vegetation heights were assigned by an automated process after the bare-earth and buildings were classified. No manual classification of the vegetation class was performed on this data set. Breaklines were digitized from the LiDAR data in Microstation and elevations were assigned using LP360 and ArcGIS. The double line linear hydrographic features were hydro-enforced with downhill constraints to model correct flow patterns. Water bodies were hydro-flattened to ensure uniform elevation across the feature. DEMs were created using QCoherent LP360 software. The bare-earth LAS data was loaded into the software along with the tile layout and hydro shapefile collected from the LAS data set. DEMS were produced at a 5ft cell size and hydro-flattened. To QC the DEMs Global Mapper was used to check for completeness of the tiles and that the hydro features were flattened and represented correct elevations. Once the QC was complete the files were exported out of ArcGIS to create Arc DEM. COLLECTION DATES: 4/25/18, 4/26/18, 4/29/18, 4/30/18, 5/01/18, 6/05/18, 6/06/18, 6/22/18, 12/05/18 173 flight lines of data were collected. 2018-01-01T00:00:00 The NOAA Office for Coastal Management (OCM) received 10,904 files in las format from the Miami-Dade Information Technology Department (ITD). The lidar data had elevation and intensity measurements. The data were in FL State Plane East, Zone 0901, NAD83 (2011), US survey foot coordinates and NAVD88 (GEOID12B) elevations in feet. The data were classified as: 1 - Unclassified, 2 - Ground, 3 - Low vegetation (0 -5 ft), 4 - Medium Vegetation (5 - 25 ft), 5 - High Vegetation (above 25 feet), 6 - Buildings, 7 - Noise, 9 - Water, 10 - Buffered Ground surrounding breaklines, 17 - Overpasses and Bridges, 18 - High Noise. Although the accompanying metadata and report indicated that there were class 12 - Overlap points, an internal OCM script did not find any points with this classification. OCM processed the 1, 2, 3, 4, 5, 6, 7, 9, 10, 17, and 18 point classes to the Digital Coast Data Access Viewer (DAV). OCM performed the following processing on the data for Digital Coast storage and provisioning purposes: 1. The data were converted to laz format using laszip 2. Internal OCM scripts were run to check the number of points by classification and by flight ID and the gps, elevation, and intensity ranges. 3. Internal OCM scripts were run on the laz files to: a. Convert from orthometric (NAVD88) elevations to ellipsoid elevations using the Geoid12B model b. Convert from FL State Plane East Zone 0901 (NAD83 2011), US survey foot coordinates to geographic coordinates c. Convert from vertical units of feet to meters d. Filter points outside the elevation range of -100 to 2000 feet e. Filter points outside the geographic range of the bounding coordinates of -82, 24, -79, 28 degrees f. Assign the geokeys, to sort the data by gps time and zip the data to database and to http. 2021-03-28T00:00:00 NOAA Office for Coastal Management (843) 740-1202 coastal.info@noaa.gov processor Source Contribution: GPI Geospatial Inc. 2018 LIDAR acquisition, classification and creation of Hydro-enforced DEM 2019-10-04 publication GPI Geospatial Inc. originator 2018-04-25 2018-12-05 The dataset has been mosaiced, reprojected, and clipped as needed from the original input files using PDAL and GDAL commands. 2026-05-08NOAA Office for Coastal Managementcoastal.info@noaa.govprocessor