49767 la2014_st_charles_m6351_metadata Data Set Published / External 49401 Lidar - partner (no harvest) Project Completed 2017-08-12 Under this task order, Precision Aerial Reconnaissance, LLC was contracted to provide acquisition and processing of airborne Lidar over St. Charles Parish, Louisiana. Airborne Lidar was captured to provide digital elevation models, lidar intensity imagery and contours for the project area. The NOAA Office for Coastal Management received the data for processing to the Digital Coast. This metadata record describes the lidar point data. In addition to the lidar point data, bare earth Digital Elevation Models (DEMs), at a 2 ft grid spacing, created from the lidar point data are also available. These data are available for download here: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=6353 The DEM products have not been reviewed by the NOAA Office for Coastal Management (OCM) and any conclusions drawn from the analysis of this information are not the responsibility of NOAA, OCM or its partners. Original contact information: Contact Name: Luis Martinez Contact Org: St Charles Parish, LA Title: GIS Coordinator Phone: 504.235.1902 Email: lmartinez@stcharlesgov.net This survey was conducted in order to obtain measurements of the bare ground surface as discrete lidar points and derivative elevation products as well as lidar intensity and orthophoto imagery. 10411 Theme ISO 19115 Topic Category elevation Theme St. Charles Parish Theme airborne Office for Coastal Management Charleston SC Data Set None Planned Map (digital) Any conclusions drawn from the analysis of this information are not the responsibility of Precision Aerial Reconnaissance, St. Charles Parish, NOAA, the NOAA Office for Coastal Management (OCM) or its partners. 50227 Airborne Lidar data Published / External Completed Lidar data and derived products | Description Source: None Converted from FGDC using 'fgdc_to_inport_xml_entity.pl' script. Data Steward 2017-08-12 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 2017-08-12 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 Metadata Contact 2017-08-12 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 2017-08-12 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 -90.549763 -90.169503 30.081556 29.696955 Range 2014-02-15 2014-03-30 Yes Unclassified None No security restrictions This data can be obtained on-line at the following URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=6351; None None. However, users should be aware that temporal changes may have occurred since this dataset was collected and that some parts of these data may no longer represent actual surface conditions. Users should not use these data for critical applications without a full awareness of its limitations. Acknowledgement of the U.S. Geological Survey would be appreciated for products derived from these data. https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=6351 Customized Download Create custom data files by choosing data area, product type, map projection, file format, datum, etc. https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/6351/index.html Bulk Download Simple download of data files. https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/6351/supplemental/la2014_st_charles_m6351.kmz Browse Graphic Browse Graphic kmz This graphic shows the lidar footprint for the 2014 St. Charles Parish, LA project. https://coast.noaa.gov Online Resource https://coast.noaa.gov/dataregistry Online Resource https://coast.noaa.gov/dataviewer Online Resource 2017-08-01 Date that the source FGDC record was last modified. 2017-11-14 Converted from FGDC Content Standards for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details. 2018-02-08 Partial upload of Positional Accuracy fields only. 2018-03-13 Partial upload to move data access links to Distribution Info. Products comply with FEMA specifications for Aerial Mapping and Surveying to Support 2-foot contours. Confidence interval on the estimate of RMSEz at 95% probability; Quantitative Value: 0.097 meters, Test that produced the value: Tested 0.32 feet (0.097 meters) fundamental vertical accuracy (FVA) at 95 percent confidence level in open terrain. Complete dataset Products have been derived from airborne Lidar data St. Charles Parish, Parish-wide Ortho and Lidar Discrete 2014-02-15 Airborne Lidar and processing to seamless tiles | Source Geospatial Form: vector digital data | Type of Source Media: digital data files 1 All products were reviewed and approved by ASPRS Certified Photogrammetrist, Ken Comeaux. 2014-06-19T00:00:00 2 DATA ACQUISITION: - Ground Control Survey: All lidar control and check points were collected by Precision Aerial Reconnaissance field crews by means of Real time VRS with a Trimble R10 receiver with internal antennas and using a TSC3 data collector. Trimble Business Center (TBC) software was used to process collected field data against a network of established NGS control. Each control or check point was occupied for a duration of at least 3 minutes. LiDAR check points were collected in the following ground classification categories: Bare Ground, Marsh, Tall Grass and Urban. In addition, a sampling of vertical LiDAR control points was collected in areas of Bare Ground. The LiDAR check and control points were also collected using VRS-RTK techniques. - LiDAR Acquisition: The LiDAR data was collected using a Leica ALS70CM sensor between 15-Feb-2014 and 30-Mar-2014 at an altitude of 4,500 feet AMT with a planned average point density of 9.1 points per square meter to support the generation of 2' contours meeting FEMA specifications for Aerial Mapping and Surveying to Support 2-foot contours. The LiDAR collection was supported by ground base stations. 2014-06-19T00:00:00 3 LIDAR PROCESSING: - LiDAR Calibration: Initial processing of the GPS and IMU data was performed using Leica IPAS TC. The SOL was generated and Leica ALS Post Processor software was used to generate georeferenced laser returns which were then processed in strip form allowing for the QC of the overlap between strips (lines). The data from each line were combined and automated classification routines run to determine the initial surface model. This initial surface model was then verified to the LiDAR test points. - LiDAR Classification: The calibrated LiDAR data was run through automated classification routines and then manually checked. The data was classified into the following classes: Unclassified (1), Ground (2), Medium Vegetation (4), Low point and noise (7), Water (9) and Overlap (12). 2014-06-19T00:00:00 4 The NOAA Office for Coastal Management (OCM) received 770 files in las 1.2 format. The files contained lidar intensity and elevation measurements for the St. Charles Parish, LA project area. The data were in LA State Plane, Zone 1702 (NAD83 2011) coordinates and in NAVD88 elevations in feet. OCM performed the following processing on the data for Digital Coast storage and provisioning purposes: 1. The LAStools software scripts lasinfo and lasvalidate were run on the las files to check for errors. 2. Internal OCM scripts were run to convert the files from LA State Plane Zone 1702 coordinates to geographic coordinates and to convert from NAVD88 elevations in feet to ellipsoid elevations in meters, using Geoid12A. 3. Internal OCM scripts were run on the las files to assign the geokeys, to sort the data by gps time and zip the data to database and to http. 2017-07-28T00:00:00 50227 Entity gov.noaa.nmfs.inport:49767 Anne Ball 2017-11-15T15:22:10 SysAdmin InPortAdmin 2022-08-09T17:11:36 2022-03-16 OCM Partners OCMP 1002 Public No No 2022-03-16 1 Year 2023-03-16