49779 mari2004_fema_blackstone_m5045_metadata Data Set Published / External 49401 Lidar - partner (no harvest) Project Completed 2016-07-09 The LIDAR-derived data was collected in the Blackstone River area. This data supports the Federal Emergency Management Agency's specifications for mapping floodplains. These efforts required detailed elevation data and models, such as those available from LIDAR sensing. The data have also been made available to aid in other projects that require detailed surface, vegetation and/or structure elevations. Buildings classed as ground. The purpose of this LiDAR data was to produce high accuracy 3D elevation based geospatial products for coastal flood mapping. The following regions of Rhode Island are included in this project 10423 A footprint of this data set may be viewed in Google Earth at: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/5045/supplemental/mari2004_fema_blackstone_be_m5045.kmz Theme ISO 19115 Topic Category elevation Theme Land Surface Office for Coastal Management Charleston SC Data Set None Planned las LiDAR point data in LAS 1.2 format ASPRS classification scheme (2 = ground) none Any conclusions drawn from the analysis of this information are not the responsibility of Sanborn, CDM, NOAA, the Office for Coastal Management or its partners. Data Steward 2016-07-09 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 2016-07-09 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 2016-07-09 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 2016-07-09 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 -71.893119 -71.374823 42.315683 41.864629 Range 2004-11-16 2004-11-18 Yes Unclassified This data can be obtained on-line at the following URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=5045; 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. These data depict the heights at the time of the survey and are only accurate for that time. https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=5045 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/geoid18/5045/index.html Bulk Download Simple download of data files. https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/5045/supplemental/mari2004_fema_blackstone_be_m5045.kmz Browse Graphic Browse Graphic kmz This graphic shows the lidar coverage for the 2004 collection of the Blackstone River watershed stretching from Massachusetts into Rhode Island. https://coast.noaa.gov Online Resource https://coast.noaa.gov/dataviewer Online Resource 2016-10-25 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. Horizontal accuracy was not reported, therefore assuming 100 cm accuracy RTK collected in coincidence; Quantitative Value: 0.185 meters, Test that produced the value: Reported as Quality level 4, with an point spacing of 1.3 m, therefore inference was that vertical accuracy would need to meet 18.5 cm Complete All LiDAR files delivered were verified and tested to ensure they open and are positioned properly. 1 The ABGPS, IMU, and raw LiDAR data are integrated into the post processor software. The resultant file is in an ASCII file. It is a binary file format that maintains information specific to the LiDAR data. The resultant points are produced in the geodetic coordinates referenced to the NAD83 horizontal datum and GRS80 vertical datum. - Projection Transformation The data was processed in the native UTM zone in meters and then transformed to the UTM Zone 18 final projection system and meters using an in-house transformation software. 2004-11-16T00:00:00 2 The NOAA Office for Coastal Management (OCM) received topographic PNT text files as part of the delivery from FEMA, referenced to UTM Zone 18 in meters horizontally but NAVD88 using the Geoid03 model vertically. OCM performed the following processing for data storage and Digital Coast provisioning purposes: 1. The LAS files were converted from PNT files to text files (txt) 2. The TXT files were converted to LAS files with txt2las (lastools), designating those points as Class 2 - Ground. 2. The LAS files were converted from orthometric (NAVD88) heights to ellipsoidal heights using the Geoid03 model. 2016-07-01T00:00:00 gov.noaa.nmfs.inport:49779 Anne Ball 2017-11-15T15:22:15 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