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2004 US Army Corps of Engineers (USACE) Post-Hurricane Ivan Topo/Bathy Lidar: Alabama, Florida

These data were collected by the Joint Airborne Lidar Bathymetry Technical Center of Expertise using the CHARTS system. The data includes hydrographic and topographic data. This data was collected Post-Hurricane Ivan in Alabama and Florida.

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    Distribution Formats
    • LAZ
    Distributor Distributor information not available
    Point of Contact
    Documentation links not available.
      • publication: 2006-10-16
      Data Presentation Form: Digital image
      Dataset Progress Status Complete
      Data Update Frequency: As needed
      Supplemental Information: As noted in the "Time_Period_of_Content" section, these data were collected between November and December of 2004. A finer breakdown of the data is given below for specific geographic bounds: Baldwin County, AL to Walton County, FL - 200411 to 200412. Powell Lake to Little St George Island, FL - 200411 to 200412. New Port Richey to Cape Romano, FL - 20041107 to 20041116. Jupiter to Miami, FL - 20041122 to 20041203. Cocoa Beach to Jupiter, FL - 20041121 to 20041208. Fernandina Beach to New Smyrna Beach - 20041206 to 20041211.
      Purpose: The data were collected to depict the elevations above and below water along the immediate coastal zone.
      Time Period: 2004-11-01  to  2004-12-31
      Spatial Reference System:
      Spatial Bounding Box Coordinates:
      N: 30.703176
      S: 25.754768
      E: -80.024861
      W: -88.029025
      Spatial Coverage Map:
      • Lidar
      • Bathymetry/Topography
      • US
      • Alabama
      • Florida
      • Miami
      • Jupiter Inlet
      Use Constraints No constraint information available
      Fees Fee information not available.
      Lineage Statement Lineage statement not available.
      Processing Steps
      • The NOAA Coastal Services Center (CSC) received ASCII files from USACE. CSC performed the following processing on the data to make it available within the Lidar Data Retrieval Tool (LDART): 1. The data were projected using the General Cartographic Transformation Package. 2. The values where extracted from the ascii files and converted to the LAS binary format.
      • For data management purposes, the NOAA Coastal Services Center (CSC) converted the data to: 1. LAS format from LDART bin format 2. Ellipsoid elevations from orthometric (NAVD88) elevations using Geoid 03.
      • Times had originally been stored as POSIX seconds when converted to LAS. This was switched to adjusted GPS time (GPS seconds - 1e9) to conform to the LAS 1.2 standard. The data were also converted to LAZ format.
      • The NOAA National Geophysical Data Center (NGDC) received lidar data files via ftp transfer from the NOAA Coastal Services Center. The data are currently being served via NOAA CSC Digital Coast at The data can be used to re-populate the system. The data are archived in LAS or LAZ format. The LAS format is an industry standard for LiDAR data developed by the American Society of Photogrammetry and Remote Sensing (ASPRS); LAZ is a loseless compressed version of LAS developed by Martin Isenburg ( The data are exclusively in geographic coordinates (either NAD83 or ITRF94). The data are referenced vertically to the ellipsoid (either GRS80 or ITRF94), allowing for the ability to apply the most up to date geoid model when transforming to orthometric heights.

      Metadata Last Modified: 2014-03-14

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