gov.noaa.nmfs.inport:64424 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) 2018 Miami-Dade ITD Lidar DEM: Miami-Dade County, FL fl2018_miami_dade_m9271_metadata 2019-10-04 publication NOAA/NMFS/EDM 64424 https://www.fisheries.noaa.gov/inport/item/64424 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/ WWW:LINK-1.0-http--link NOAA's Office for Coastal Management (OCM) website Information on the NOAA Office for Coastal Management (OCM) download https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9271/details/9271 WWW:LINK-1.0-http--link Customized download of lidar point data. Link to custom download, from the Data Access Viewer (DAV), the lidar point data from which these raster Digital Elevation Model (DEM) data were created. download https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9271/breaklines/ WWW:LINK-1.0-http--link Data set hydro breaklines Link to the data set hydro breaklines. 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 Data Set Report Link to the data set report. 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 The project limits cover 615 square miles of Miami-Dade County. The project was divided into 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 point, DEM, and breakline data were provided to the Office for Coastal Management (OCM) by the Miami-Dade County Information Technology Department (OTD) for inclusion in the Data Access Viewer (DAV). In addition to these bare earth Digital Elevation Model (DEM) data, the lidar point data that these DEM data were created from 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. The purpose of this survey was the acquisition of the LiDAR data for the 615 square miles provided by the Information Technology Department. GPI Geospatial Inc. collected high-density aerial LiDAR performing manual classification point cloud, collected hydro breaklines to create a project-wide hydro-enforced Digital Elevation Model. GPI Geospatial Inc., Miami-Dade County Information Technology Department (ITD) 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 The data set footprint in kmz format. kmz 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 VERTICAL LOCATION > SEA FLOOR 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 DEM > Digital Elevation Model platform Global Change Master Directory (GCMD) Platform Keywords 23.3 DEM METADATA theme DEMs - partner (no harvest) project InPort otherRestrictions Cite As: OCM Partners, [Date of Access]: 2018 Miami-Dade ITD Lidar DEM: Miami-Dade County, FL [Data Date Range], https://www.fisheries.noaa.gov/inport/item/64424. 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 Access Constraints: None otherRestrictions 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 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: Miami-Dade County, FL NOAA/NMFS/EDM 64464 crossReference eng; US elevation Microsoft Windows 10 pro; Esri ArcGIS 10.6.1.9270 -80.8825255556 -80.105244 25.391896 25.978256 | Currentness: Ground Condition 2018-04-25 2018-12-05 Zip Zip GeoTIFF 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=9272/details/9272 WWW:LINK-1.0-http--link Customized Download Create custom data files by choosing data area, map projection, file format, etc. A new metadata will be produced to reflect your request using this record as a base. download https://noaa-nos-coastal-lidar-pds.s3.us-east-1.amazonaws.com/dem/FL_Miami_Dade_DEM_2018_9272/index.html WWW:LINK-1.0-http--link Bulk Download Bulk download of data files in the original coordinate system. download dataset Horizontal Positional Accuracy ASPRS does not require horizontal accuracy testing of LiDAR-derived elvation 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 Bare-earth 5-foot DEM as 32-bit floating point raster format in ARCGIS GRID Raster format in compliance with USGS LIDAR Base Specifications such as: georeferencing information, delivered without overlap and with no edge artifacts or mismatched, “NODATA” value for void areas, bridges removed from the surface, etc. 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 celling 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 1file in esri ArcGrid format from the Miami-Dade County Information Technology Department (ITD). The bare earth raster file was at a 5 ft grid spacing. The data were in FL State Plane, Zone 0901, NAD83(2011), US survey foot coordinates and NAVD88 (GEOID12B) elevations in feet. OCM converted the file from esri ArcGrid format to Geotiff format and the file was assigned the EPSG codes of 6438 (horizontal) and 8228 (vertical) and then copied to https for Digital Coast storage and provisioning purposes using an internal OCM script. 2021-03-24T00:00:00 Office for Coastal Management processor Source Contribution: GPI Geospatial Inc. GPI_DEM_2018 2019-10-04 publication 2018-04-25 2018-12-05