48215 sc2007_jas_coll_chas_m56_metadata Data Set Published / External 37231 Lidar Project Completed 2008-03-26 LiDAR data collection was performed utilizing a Leica ALS-50 sensor, collecting multiple return x, y, and z data as well as intensity data. LiDAR data was processed to achieve a bare ground surface, and was delivered in LAS format. Classified LAS data was also used as a base for collection of hydro features, delivered in MicroStation v8 format. The dates of collection are: 1. JASPER COUNTY (full county): 20061227 to 20070216 2. COLLETON COUNTY (full county: 20070216 to 20070323 3. CHARLESTON COUNTY (Partial County): 20070222 to 20070223 Original contact information: Contact Org: NOAA Office for Coastal Management Phone: 843-740-1202 Email: coastal.info@noaa.gov Lidar data was acquired for Charleston (Partial County), Jasper (full county) and Colleton (full county) Counties, SC as part of a collaborative effort by state agencies, FEMA and the NOAA Office for Coastal Management to provide high-resolution topographic data for floodplain mapping and other uses. 10238 The Lidar Quality Assurance and Quality Control Report for Colleton and Charleston Counties, SC may be viewed at: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/56/supplemental The Lidar Quality Assurance and Quality Control Report for Jasper County, SC may be viewed at: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/56/supplemental/index.html Theme Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION > TOPOGRAPHICAL RELIEF MAPS Theme Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > SEAFLOOR TOPOGRAPHY 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 > SOUTH CAROLINA Theme Bare Ground Surface Theme Hydro Theme Hydrography Theme Light Detection and Ranging Office for Coastal Management Charleston SC Data Set As Needed Any conclusions drawn for the analysis of this information are not the responsibility of NOAA, the Office for Coastal Management or its partners. Data Steward 2008-03-26 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 2008-03-26 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 2008-03-26 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 2008-03-26 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 -81.283784 -79.69763 33.182564 32.035599 Range 2006-12-27 2007-03-23 Yes Unclassified This data can be obtained on-line at the following URL: https://coast.noaa.gov/dataviewer. The data set is dynamially 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=56 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/geoid18/56/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 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. JASPER COUNTY: Horizontal accuracy is 1 m based on collection specifications. COLLETON COUNTY: Horizontal accuracy is 1 m based on collection specifications. CHARLESTON COUNTY: Horizontal accuracy is 1 m based on collections specifications. JASPER COUNTY: Based on a control-to-LiDAR comparison, LiDAR data delivered for this project returned an RMSE of 0.06 m and an Accuracy of 0.12 m in open terrain, based on 42 points. Combined Vertical Accuracy (CVA) is 0.30 m based on 108 points. COLLETON COUNTY: Based on a control-to-LiDAR comparison, LiDAR data delivered for this project returned an RMSE of 0.068 m and an Accuracy of 0.13 m in open terrain, based on 21 points. Combined Vertical Accuracy (CVA) is 0.22 m based on 91 points. CHARLESTON COUNTY: Based on a control-to-LiDAR comparison, LiDAR data delivered for this project returned an RMSE of 0.092 m and an Accuracy of 0.18 m at the 95% confidence level in open terrain, based on 26 points. Combined Vertical Accuracy (CVA) is 0.183 m at the 95% confidence level, based on 75 points. All project tasks have been completed. No known data gaps exist (with the exception of water areas) within the project area. Elevation and hydrography data was delivered covering the full extent of Jasper and Colleton Counties, and partial county coverage of Charleston County. Jasper, Colleton and Charleston Counties, South Carolina 2007-10-30 Range 2006-12-27 2007-03-23 Raw LiDAR elevation data utilized in production of final bare ground surface. | Type of Source Media: Hard Drive 1 JASPER COUNTY: Utilizing Photo Science's two ALS-50 LiDAR sensors, data was collected to cover Jasper County, South Carolina. Data was collected in a total of 111 flightlines at a pulse rate of 75,000 points per second. COLLETON COUNTY: Utilizing Photo Science's two ALS-50 LiDAR sensors, data was collected to cover Colleton County, South Carolina. Data was collected in a total of 160 flightlines at a pulse rate of 75,000 points per second. CHARLESTON COUNTY: Utilizing Photo Science's two ALS-50 LiDAR sensors, data was collected to cover Charleston County, South Carolina. Data was collected in a total of 77 flightlines at a pulse rate of 75,000 points per second. 2007-03-23T00:00:00 2 Raw LiDAR data (collected as Process Step 1) was processed to create a bare ground surface. Process included calibration of LiDAR data to remove systematic errors (utilizing Leica's ALS Processor software), adjustment of elevation data to control positions (utilizing TerraScan software for control comparisons and adjustments), and both automatic and manual editing to correctly classify ground and non-ground data (utilizing TerraScan and TerraModeler software). In addition, QC steps were performed before and after processing. QC steps included line-to-line vertical comparisons and coverage checks, and were performed with TerraScan and GeoCue software. 2007-10-30T00:00:00 3 Following bare ground surface creation (Process Step 2),Photo Science utilized the resulting dataset as a source for collection of hydrographic features, including double-line drains, single-line drains, and bodies of water. Hydro features were collected from bare ground surface models in MicroStation v8 software. After collection was complete, Photo Science adjusted elevation of all hydro features to ensure proper monotonicity using FME and proprietary software. 2007-10-30T00:00:00 4 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 to make it available within the LiDAR Data Retrieval Tool (LDART) 1. The data were converted from UTM (Zone 17) coordinates to geographic coordinates. 2. The LAS data were sorted by latitude and the headers were updated. 2008-03-21T00:00:00 gov.noaa.nmfs.inport:48215 Anne Ball 2017-11-14T14:20:07 SysAdmin InPortAdmin 2022-08-09T17:11:34 2022-03-16 Office for Coastal Management OCM 1002 Public No No 2022-03-16 1 Year 2023-03-16