49878 nwfwmd2010_mission2010_m581_metadata Data Set Published / External 49401 Lidar - partner (no harvest) Project Completed 2011-05 LIDAR-derived binary (.las) files containing points classified as: Unclassified (1), Ground (2) and Water (9) were produced for the 2010 Northwest Florida Water Management District - 2 Counties (Calhoun and Liberty), Florida LIDAR mapping project. The data were collected March 30 - April 1, 2010 and the total mapping area covers approximately 585 square miles in Liberty County and 2.65 square miles in Calhoun County. Original contact information: Contact Name: Mr. John Crowe Contact Org: Northwest Florida Water Management District (NWFWMD) Title: Associate Hydrologist, Division of Resource Management Phone: 850-539-5999 Email: John.Crowe@nwfwmd.state.fl.us To produce accurate, high-resolution data for planning, analysis, and for use with other data sets. 10522 The Northwest Florida Water Management District (NWFWMD) Portions of Liberty and Calhoun Counties, Florida LiDAR Mapping Report may be viewed at: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/581/supplemental/NWFWMD_Liberty_County_LiDAR_Mapping_Report.pdf A footprint of this data set may be viewed in Google Earth at: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/581/supplemental/2010_NWFWMD_2010_Mission_Lidar.kmz Theme ISO 19115 Topic Category elevation Theme bare earth Theme binary Theme canopy Temporal 2010 Office for Coastal Management Charleston SC Data Set As Needed Use ASPRS LAS 1.2 specifications / classification designations for filtering: Class 1 = Unclassified (i.e., vegetation, buildings, cars, structures, and other miscellaneous features) Class 2 = Ground (i.e., bare-earth) Class 9 = Water LIDAR intensity values range from 0-255. LIDAR return values range from 1-3. Flight line numbers range from 1-19. Use ASPRS LAS 1.2 specifications / classification designations for filtering: Class 1 = Unclassified (i.e., vegetation, buildings, cars, structures, and other miscellaneous features) Class 2 = Ground (i.e., bare-earth) Class 9 = Water Any conclusions drawn from analysis of this information are not the responsibility of the Northwest Florida Water Management District (NWFWMD), the NOAA Office for Coastal Management or its partners. Northwest Florida Water Management District (NWFWMD) 50244 LAS Published / External Completed LAS | Description Source: Merrick & Co Converted from FGDC using 'fgdc_to_inport_xml_entity.pl' script. Data Steward 2011-05 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 2011-05 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 2011-05 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 2011-05 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 -85.371138 -84.637447 30.594233 30.016385 Range 2010-03-30 2010-04-01 Yes Unclassified unknown unknown This data can be obtained on-line at the following URL: https://coast.noaa.gov/dataviewer The data set is dynamically generated based on user-specified parameters. ; 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=581 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/geoid18/581/index.html Bulk Download Simple download of data files. https://coast.noaa.gov Online Resource https://coast.noaa.gov/dataviewer Online Resource 2016-05-23 Date that the source FGDC record was last modified. 2017-11-14 Converted from FGDC Content Standard 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. Microsoft Windows XP version 5.1 (Build 2600, Service Pack 2); ArcGIS Desktop 9.1; ArcGIS Workstation 9.1; MARS 4.0 Verification of attribute accuracy of LIDAR data involves the use of filtering techniques. Auto-filtering uses algorithms to reclassify data in the point cloud. Hand-filtering involves the use of a technician working in a graphic environment to reclassify the erroneous points that may remain in the LIDAR point cloud after auto filter. Horizontal accuracy is verified in three tests. During boresighting, adjoining flightlines are view in profile and hard edged features are observed and if necessary the flightlines are adjusted for good relative horizontal and vertical fit. The second test for horizontal accuracy is by comparing raw contours from each flightline against adjoining flightlines at specific points. The final test is the vertical LIDAR control report. Survey control points were used to validate the accuracy of the LIDAR surface model after automatic and hand filtering. This surface exceeds the NDEP vertical accuracy specifications of 18.5cm RMSEz. The vertical accuracy for this data set is 0.60 ft (0.18 m) RMSEz. Cloud Cover: 0 This dataset contains classified returns of the LIDAR sensor. The sensor data was verified in MARS software to ensure complete coverage. Calibrations of the LIDAR flightline data are performed; this process is known as boresighting. The flightlines are compared to evaluate both their relative and absolute accuracies. Ground Control 2010-01-01 Discrete 2007-11-12 GPS control network for LIDAR acquisition and processing. | Source Geospatial Form: spreadsheet | Type of Source Media: spreadsheet LIDAR 2010-01-01 Range 2010-03-30 2010-04-01 LIDAR points form the basis of the DTM surface. | Source Geospatial Form: LAS data | Type of Source Media: digital data 1 LIDAR data was collected using Merrick's ALS60 sensor. The raw data was verified in MARS software for complete coverage of the project area, and boresighted to align the flightlines. Raw data files were parsed into manageable client-specific tiles. These tiles were then processed through automated filtering that separates the data into different classification groups: error points, ground points, and canopy/building points. The data was next taken into a graphic environment to reclassify the erroneous points that may remain in the LIDAR point cloud after auto filter. 2007-06-11T00:00:00 2 The NOAA Office for Coastal Management (OCM) received files in LAS format. The files contained LiDAR intensity and elevation measurements. OCM performed the following processing on the data for data storage purposes and Digital Coast provisioning: 1. The data were converted from UTM, Zone 16 coordinates to geographic (NAD83) coordinates; 2. The data were filtered to remove elevation outliers; 3. The data were converted from NAVD88 heights to ellipsoid heights using Geoid03; 4. The LAS header fields were sorted by latitude and updated; 2011-05-10T00:00:00 50244 Entity gov.noaa.nmfs.inport:49878 Anne Ball 2017-11-15T15:22:55 SysAdmin InPortAdmin 2022-08-09T17:11:37 2022-03-16 OCM Partners OCMP 1002 Public No No 2022-03-16 1 Year 2023-03-16