77763 la2019_fl_parishes_dem_m10443 Data Set Published / External 49404 DEMs - partner (no harvest) Project Completed 2019 2025 Original Product: These are Digital Elevation Model (DEM) data as part of the required deliverables for the Louisiana Lidar 2017 project. Class 2 (ground) lidar points in conjunction with the hydro breaklines were used to create a 0.5 meter hydro-flattened Raster DEM. Original Dataset Geographic Extent: LA_2021FloridaParishes_1 (Work Unit 300569) covers approximately 1272.5 square miles and includes: Louisiana Lidar 2017 Block 26NE, covering approximately 231 square miles in St. Helena and Tangipahoa Parishes Louisiana Lidar 2017 Block 26SE, covering approximately 369 square miles in Livingston, St. Helena, and Tangipahoa Parishes Louisiana Lidar 2017 Block 30NE, covering approximately 258.50 square miles in Pearl River and Washington Parishes Louisiana Lidar 2017 Block 30NW, covering approximately 414 square miles in Tangipahoa and Washington Parishes LA_2021FloridaParishes_2 (Work Unit 300570) covers approximately 1313.14 square miles and includes: Louisiana Lidar 2017 Block 30SE, covering approximately 290 square miles in Pearl River and St. Tammany Parishes Louisiana Lidar 2017 Block 30SW, covering approximately 535.14 square miles in St. Tammany, Tangipahoa, and Washington Parishes Louisiana Lidar 2017 Block 31NE, covering approximately 488 square miles in St. Tammany Parish LA_2021FloridaParishes_3 (Work Unit 300571) covers approximately 897 square miles and includes: Louisiana Lidar 2017 Block 25NE, covering approximately 155 square miles in Livingston and Tangipahoa Parishes Louisiana Lidar 2017 Block 25SE, covering approximately 435 square miles in Tangipahoa and Washington Parishes Louisiana Lidar 2017 Block 31NW, covering approximately 307 square miles in Livingston, St. John the Baptist, St. Tammany, and Tangipahoa Parishes LA_2021FloridaParishes_4 (Work Unit 300868) covers approximately 50 square miles and includes: Louisiana Lidar 2017 Block 31SW, covering approximately 50 square miles in St. John the Baptist and St. Charles Parishes Original Dataset Description: Louisiana Lidar 2017 project called for the Planning, Acquisition, processing and derivative products of lidar data to be collected at a nominal pulse spacing (NPS) of 0.35 meter. Project specifications are based on the U.S. Geological Survey National Geospatial Program Base Lidar Specification, Version 1.2. The data was developed based on a horizontal projection/datum of NAD83 (2011), Universal Transverse Mercator, meters and vertical datum of NAVD88 (GEOID12B), meters. Lidar data was delivered as processed Classified LAS 1.4 files, formatted to individual 1,500 m x 1,500 m tiles, as tiled Intensity Imagery, and as tiled bare earth DEMs; all tiled to the same 1,500 m x 1,500 m schema. LA DOTD acquired and initially post-processed lidar data for the following blocks- 25SE, 25NE, 26NE, 26SE, 30NW, 30NE, 30SE, 31NE, and 31S. The Sanborn Map Company (Sanborn) acquired and initially post-processed lidar for the following blocks- 30SW and 31NW. Original Dataset Ground Conditions: Lidar was collected while no snow was on the ground and rivers were at or below normal levels. This metadata record supports the data entry in the NOAA Digital Coast Data Access Viewer (DAV). For this data set, the DAV is leveraging the GeoTIFF files hosted by USGS on Amazon Web Services. To acquire detailed surface elevation data for use in conservation planning, design, research, floodplain mapping, dam safety assessments and elevation modeling, etc. Classified LAS files are used to show the manually reviewed bare earth surface. This allows the user to create Intensity Images, Breaklines and Raster DEM. The purpose of these lidar data was to produce high accuracy 3D hydro-flattened Digital Elevation Model (DEM) with a 0.5 meter cell size. These raw lidar point cloud data were used to create classified lidar LAS files, intensity images, 3D breaklines, hydro-flattened DEMs as necessary. Raster File Type = GeoTIFF Bit Depth/Pixel Type = 32-bit float Raster Cell Size = 0.5 Meter Interpolation or Resampling Technique = Triangulated Irregular Network Required Vertical Accuracy = 19.6 cm NVA Theme Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION Theme Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION > DIGITAL ELEVATION/TERRAIN MODEL (DEM) Theme Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > OCEANS > COASTAL PROCESSES > COASTAL ELEVATION Theme ISO 19115 Topic Category elevation Spatial Global Change Master Directory (GCMD) Location Keywords CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA Spatial Global Change Master Directory (GCMD) Location Keywords CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > LOUISIANA Spatial Global Change Master Directory (GCMD) Location Keywords VERTICAL LOCATION > LAND SURFACE Instrument Global Change Master Directory (GCMD) Instrument Keywords LIDAR > Light Detection and Ranging Platform Global Change Master Directory (GCMD) Platform Keywords Airplane > Airplane Office for Coastal Management Charleston SC Data Set Elevation None Planned Model (digital) Any conclusions drawn from the analysis of this information are not the responsibility of NOAA, the Office for Coastal Management or its partners. Louisiana Department of Transportation and Development (La DOTD), USGS Data Steward 2025 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Distributor 2025 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Distributor 2025 Organization U.S. Geological Survey 12201 Sunrise Valley Drive Reston VA 20191 USA https://usgs.gov USGS Home Home page for USGS Online Resource Metadata Contact 2025 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Point of Contact 2025 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Ground Condition -91.06 -89.5 31.005331 30 Range 2019-09-18 2021-11-13 Dates of collection for the LA Florida Parishes project. LA_2021FloridaParishes_1 (Work Unit 300569) Blocks 26NE, 26SE, 30NE, 30NW dates of collection: 20201207 - 20211031 LA_2021FloridaParishes_2 (Work Unit 300570) Blocks 30SE, 30SW, 31NE dates of collection: 20210104 - 20211113 LA_2021FloridaParishes_3 (Work Unit 300571) Blocks 25NE, 25SE, 31NW dates of collection: 20190918 - 20211113 LA_2021FloridaParishes_4 (Work Unit 300868) Block 31SW dates of collection: 20190919 - 20190925 Yes No No No No Vertical EPSG:5703 NAVD88 height North American Vertical Datum 1988 1 Gravity-related height H metre up Projected EPSG:6344 NAD83(2011) / UTM zone 15N NAD83 (National Spatial Reference System 2011) GRS 1980 6378137 298.257222101 NAD83(2011) UTM zone 15N Transverse Mercator Latitude of natural origin 0° 0' 0" N Longitude of natural origin 93° 0' 0" W Scale factor at natural origin 0.9996 False easting 500000 metre False northing 0 metre 1 Easting E metre east 2 Northing N metre north Custom Universal (CC0 1.0) Public Domain Dedication https://creativecommons.org/publicdomain/zero/1.0/ To the extent possible under law, the U.S. Government has waived all copyright and related or neighboring rights to this dataset. Unclassified Data is available online for bulk and custom downloads. None 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. https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=10443/details/10443 2025 Organization NOAA Office for Coastal Management 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. Not Applicable Zip https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/LA_2021FloridaParishes_C24/ 2025 Organization U.S. Geological Survey Bulk Download Bulk download of data files in GeoTIFF format, in UTM Zone 15N NAD83 (2011), meters coordinates and elevations in NAVD88 (GEOID12B) meters. GeoTIFF https://coast.noaa.gov/dataviewer/ NOAA's Office for Coastal Management (OCM) Data Access Viewer (DAV) Online Resource HTML 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. https://prd-tnm.s3.amazonaws.com/StagedProducts/Elevation/metadata/LA_2021FloridaParishes_C24/LA_2021FloridaParishes_1_C24/reports/LA%20DOTD%20Florida%20Parishes%20Lidar%20Final%20Report.pdf Dewberry Lidar Report Online Resource pdf Link to the Dewberry lidar report. https://prd-tnm.s3.amazonaws.com/StagedProducts/Elevation/metadata/LA_2021FloridaParishes_C24/LA_2021FloridaParishes_4_C24/reports/Appendix_D_Subcontractor_Acquisition_Report.pdf Sanborn Acquisition Report - Blocks 30SW, 31NW Online Resource pdf Sanborn acquisition report for Blocks 30SW and 31NW https://prd-tnm.s3.amazonaws.com/StagedProducts/Elevation/metadata/LA_2021FloridaParishes_C24/USGS_LA_2021FloridaParishes_C24_Project_Report.pdf USGS Project Report Online Resource pdf Link to the USGS Project Report that provides information about the project, vertical accuracy results, and the point classes and sensors used. https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/metadata/LA_2021FloridaParishes_C24/ USGS Additional Info Online Resource Link to the reports, breaklines, metadata, spatial metadata, and shapefiles. Horizontal accuracy testing requires well-defined checkpoints that can be identified in the dataset. Elevation datasets, including lidar datasets, do not always contain well-defined checkpoints suitable for horizontal accuracy assessment. However, the ASPRS Positional Accuracy Standards for Digital Geospatial Data (2014) recommends at least half of the NVA vertical check points should be located at the ends of paint stripes or other point features visible on the lidar intensity image, allowing them to double as horizontal check points. No checkpoints were photo-identifiable in the intensity imagery; horizontal accuracy could not be tested on this dataset. This data set was produced to meet ASPRS Positional Accuracy Standard for Digital Geospatial Data (2014) for a 10-cm RMSEz Vertical Accuracy Class. USGS Determined DEM Vertical Accuracy: Non-Vegetated Vertical Accuracy (NVA) = 4.19 cm RMSE Vegetated Vertical Accuracy (VVA) = 19.34 cm at 95th Percentile Datasets contain complete coverage of tiles. No points have been removed or excluded. A visual qualitative assessment was performed to ensure data completeness. There are no void areas or missing data. The raw point cloud is of good quality and data passes Non-Vegetated Vertical Accuracy specifications. Data covers the entire area specified for this project. The NOAA Office for Coastal Management (OCM) ingested references to the USGS GeoTIFF files that are hosted on Amazon Web Services (AWS), into the Digital Coast Data Access Viewer (DAV). The DAV accesses the raster data as it resides on AWS. USGS AWS GeoTIFF Files - LA_2021FloridaParishes_1 Organization USGS Publisher https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/LA_2021FloridaParishes_C24/LA_2021FloridaParishes_1_C24/TIFF USGS AWS GeoTIFF Files for LA_2021FloridaParishes_1 USGS AWS GeoTIFF Files - LA_2021FloridaParishes_2 Organization USGS Publisher https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/LA_2021FloridaParishes_C24/LA_2021FloridaParishes_2_C24/TIFF/ USGS AWS GeoTIFF Files for LA_2021FloridaParishes_2 USGS AWS GeoTIFF Files - LA_2021FloridaParishes_3 Organization USGS Publisher https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/LA_2021FloridaParishes_C24/LA_2021FloridaParishes_3_C24/TIFF/ USGS AWS GeoTIFF Files for LA_2021FloridaParishes_3 USGS AWS GeoTIFF Files - LA_2021FloridaParishes_4 Organization USGS Publisher https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/LA_2021FloridaParishes_C24/LA_2021FloridaParishes_4_C24/TIFF/ USGS AWS GeoTIFF Files for LA_2021FloridaParishes_4 1 Hydro Flattened Raster DEM Process: Class 2 (ground) lidar points in conjunction with the hydro breaklines were used to create a 0.5 meter hydro-flattened Raster DEM. Using LP360, a GeoTIFF file was created for each tile. Each surface is reviewed using Global Mapper to check for any surface anomalies or incorrect elevations found within the surface. 2022-04-15T00:00:00 2 The NOAA Office for Coastal Management (OCM) created references to the USGS GeoTIFF files that were ingested into the NOAA Digital Coast Data Access Viewer (DAV). No changes were made to the data. The DAV will access the raster data as it resides on Amazon Web Services (AWS). These are the GeoTIFF files that are being accessed: https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/LA_2021FloridaParishes_C24/LA_2021FloridaParishes_1_C24/TIFF/ https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/LA_2021FloridaParishes_C24/LA_2021FloridaParishes_2_C24/TIFF/ https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/LA_2021FloridaParishes_C24/LA_2021FloridaParishes_3_C24/TIFF/ https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/OPR/Projects/LA_2021FloridaParishes_C24/LA_2021FloridaParishes_4_C24/TIFF/ 2025-09-16T00:00:00 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource gov.noaa.nmfs.inport:77763 Rebecca Mataosky 2025-09-16T19:41:18 Rebecca Mataosky 2025-09-17T18:27:22 2025-09-17 OCM Partners OCMP 1002 Public No No 2025-09-17 1 Year 2026-09-17