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2004 - 2008 Florida Division of Emergency Management (FDEM) Lidar Project: Southwest Florida

browse graphicThis kmz file shows the extent of coverage of the 2004-08 FDEM Southwest Florida lidar data set.
This Light Detection and Ranging (LiDAR) LAS dataset is a topographic survey conducted for a coalition of GIS practitioners, including the Florida Division of Emergency Management (FDEM), Florida Water Management Districts, Florida Fish and Wildlife Conservation Commission, Florida Department of Environmental Protection, Army Corps of Engineers Jacksonville District, and other state and federal agencies. The goal for this project is to use the LiDAR data as new elevation inputs for updated SLOSH data grids. The ultimate result is the update of the Regional Hurricane Evacuation Studies (RHES) for the state. The State of Florida Division of Emergency Management LiDAR Survey was collected under the guidance of a Professional Mapper/Surveyor. This is a classified lidar data set, bare-earth points (class 2), noise points (class 7), water returns (class 9), and unclassified data (class 1). Class 12 contains LiDAR points removed from the overlap region between adjacent flight lines. The LiDAR data was flown at a density sufficient to support a maximum final post spacing of 4 feet for unobscured areas. This data set is a collection of smaller project areas collected at different times in southwest Florida. Specifically, the data were collected within portions of Pinellas, Hillsborough, Manatee, Sarasota, Charlotte, Lee, Collier, Monroe, and a small portion of the coastal area of Pasco, Counties. Project Area A, also in Pasco County, is data from the Southwest Florida Water Management District (SWFWMD), collected in 2004, and was not part of the FDEM collection effort. Project Area A has been added to this FDEM southwest Florida data set. The dates of collection are: Project Area A: 2004 Project Area B: 20070706-20070810 Project Area C: 20070706-20070810 Project Area D: 20070717-20070729 Project Area E: 20070717-20070708 Project Area F: 20070618-20070806 Project Area G: 20070612-20070630, 20070702, 20070714, 20070804-20070805 Project Area H: 20070615-20070629 Lee Buy Up: 20070811-20070824 Sarasota Buy Up: 20070828-20070830 Pasco Coastal: 20080209
Cite this dataset when used as a source.
Online Access
  • Online access is not available for this resource
Distribution Formats
  • LAZ
Distributor DOC/NOAA/NOS/OCM > Office for Coastal Management, National Ocean Service, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
Dataset Point of Contact Florida Division of Emergency Management
850-413-9907
gis@dca.state.fl.us
Associated Resources
  • Lidar Final Reports
Date(s)
  • publication: 2009-01-01
Data Presentation Form: Digital image
Dataset Progress Status Complete
Data Update Frequency: As needed
Supplemental Information:
The lidar data for "Area A" was collected in 2004 by the Southwest Florida Water Management District (SWFWMD) and was not part of the FDEM project. It has been added to the FDEM southwest Florida data set due to its similar geographic location and collection date. There are no Final Reports available. Vertical accuracy was tested at 0.213 ft RMSE in open areas.
Purpose: The LiDAR topographic mapping survey is to support the Florida Division of Emergency Management (FDEM) development and maintenance of Regional Hurricane Evacuations Studies (RHES), which include vulnerability assessments, and to assist disaster response personnel in understanding the threats to Florida's citizens and visitors. Additional intended uses for this survey are growth management, map modernization/floodplain mapping, natural lands stewardship, and homeland security planning.
Use Limitations
  • These data depict the elevations at the time of the survey and are only accurate for that time. 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. Any conclusions drawn from analysis of this information are not the responsibility of NOAA or any of its partners. These data are NOT to be used for navigational purposes.
Originator(s)
  • DOC/NOAA/NOS/OCM > Office for Coastal Management, National Ocean Service, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
  • Florida Division of Emergency Management (FDEM)
Publisher(s)
  • DOC/NOAA/NOS/OCM > Office for Coastal Management, National Ocean Service, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
Time Period: 2004-01-01 to 2008-02-09
Spatial Reference System: urn:ogc:def:crs:EPSG::4269 Ellipsoid in Meters
Spatial Bounding Box Coordinates:
N: 28.431265
S: 25.777308
E: -81.246662
W: -82.857559
Spatial Coverage Map:
Theme keywords
  • Bathymetry/Topography
  • LiDAR
  • DTM
  • DSM
  • LiDARgrammetry
  • LiDAR
  • LAS
Place keywords
  • US
  • Florida
  • Charlotte County
  • Collier County
  • Hillsborough County
  • Lee County
  • Manatee County
  • Monroe County
  • Pasco County
  • Pinellas County
  • Sarasota County
Use Constraints No constraint information available
Fees Fee information not available.
Lineage information for: dataset
Processor
  • Woolpert, Inc.
  • DOC/NOAA/NOS/OCM > Office for Coastal Management, National Ocean Service, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Processing Steps
  • 2008-07-31T00:00:00 - LiDAR was collected within portions of Pinellas, Hillsborough, Manatee, Sarasota, Charlotte, Lee, Collier, Monroe, and a very small coastal area of Pasco, Counties. System Parameters/Flight Plan. The LiDAR system acquisition parameters were developed based on a maximum average ground sample distance of 4 feet. Two Leica ALS50 sensors were used for acquisition. Acquisition specifications for the two sensors were as follows: Sensor 19 Field of View (full angle) - 29 degrees Nominal flight altitude (AMSL) - 3999.30 feet Airspeed - 54.02 meters/sec Laser pulse rate - 75,000 Hz Nominal swath width (on ground) - 2068.58 feet Maximum cross track point spacing - 3.91 feet Maximum along track point spacing - 3.94 feet Average point spacing - 2.21 feet Flight line spacing - 1544.95 feet Side overlap - 25.31 percent Sensor 59 Field of View (full angle) - 29 degrees Nominal flight altitude (AMSL) - 3999.30 feet Airspeed - 60.70 meters/sec Laser pulse rate - 84,400 Hz Nominal swath width (on ground) - 2068.58 feet Maximum cross track point spacing - 3.94 feet Maximum along track point spacing - 3.91 feet Average point spacing - 2.21 feet Flight line spacing - 1413.72 feet Side overlap - 31.66 percent LiDAR System Calibration. Prior to the LiDAR acquisition, the system underwent a calibration to verify the operational accuracy and misalignment angles. Boresight calibrations were performed for each LiDAR system at the beginning and end of each flight mission. LiDAR Data Acquisition. LiDAR data acquisition only occurred when the sky was sufficiently clear of clouds, smoke, and atmospheric haze. The LiDAR data was processed immediately after the acquisition to verify the coverage had no voids. GPS/Inertial Measurement Unit (IMU) Post Processing. The GPS and IMU data was post processed using differential and kalman filter algorithms to derive a best estimate of trajectory. The quality of the solution was verified to be consistent with the accuracy requirements of the project. LiDAR Processing and Classification. The LiDAR data was post processed and verified to be consistent with the project requirements in terms of post spacing and absence of artifacts. The point cloud underwent classification to determine bare-earth points (class 2), noise points (class 7), water returns (class 9), and unclassified data (class 1). Class 12 contains LiDAR points removed from the overlap region between adjacent flight lines. The MASSPOINT feature class contains ground (class 2) points only.
  • 2010-01-01T00:00:00 - The NOAA Coastal Services Center (CSC) received files in LAS format. The files contained LiDAR intensity and elevation measurements. CSC performed the following processing on the data to make it available within Digital Coast: 1. The data were converted from State Plane Florida West coordinates to geographic coordinates. 2. The data were converted from NAVD88 heights to ellipsoid heights using Geoid03. 3. The LAS header fields were sorted by latitude and updated.
  • 2011-10-05T00:00:00 - 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 http://www.csc.noaa.gov/digitalcoast/. 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 (http://www.laszip.org/). 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.
Last Modified: 2013-05-07
For questions about the information on this page, please email: mike.sutherland@noaa.gov