gov.noaa.csc.maps:2008_NWFWMD_Waltong_Eglin_m574 Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC) Northwest Florida Water Management District (NWFWMD) 200808 vector digital data Charleston, SC NOAA's Ocean Service, Coastal Services Center (CSC) http://csc-s-maps-q.csc.noaa.gov/dataviewer/viewer.html?keyword=lidar http://www.csc.noaa.gov/lidar http://www.csc.noaa.gov In the summer of 2008, the Northwest Florida Water Management District collected lidar data over a portion of Walton County, FL (Eglin Air force Base) to support various projects such as floodplain and hazards mapping, wetlands mitigation and stormwater management. The data collection occured in a portion of the county for which there is no prior collected lidar data. Used in conjunction with previously collected data in Walton County (FDEM Lidar collected in 2006), these data support the creation of a county-wide, high resolution, lidar derived digital elevation model(DEM). To supplement previously collected lidar data in the creation of county-wide, high resolution, lidar derived digital elevation models (DEM). Reflective surface data represents the DEM created by laser energy reflected from the first surface encountered by the laser pulse. Some energy may continue beyond this initial surface to be reflected by a subsequent surface as represented by the Last Return data. Intensity information is captured from the Reflective Surface pulse and indicates the relative energy returned to the sensor as compared to the energy transmitted. The Intensity image is not calibrated or normalized but indicates differences in energy absorption due to the interaction of the surface materials with laser energy at the wavelength transmitted by the sensor. Points are classified as water, bare ground or not bare ground to support creation of a bare earth model from the data. A footprint of this data set may be viewed in Google Earth at: ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/fl/walton/2008_NWFWMD_Lidar_WaltonCounty_EglinAFB.kmz 20080615 ground condition Complete Unknown -86.323522 -86.114148 30.605467 30.495943 ISO 19115 Topic Category elevation None Bathymetry/Topography LiDAR Digital Elevation Model LAS topography DEM None US Florida Walton County Eglin Air Force Base 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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.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. Northwest Florida Water Management District John B. Crowe Associate Hydrologist mailing and physical address

81 Water Management Drive

Havana Florida 32333 USA (850) 539-5999 (850) 539-2777 John.Crowe@nwfwmd.state.fl.us Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.4.1420 Data covers the tile scheme provided for the Eglin Airforce Base and partially covers the tiling scheme provided for the county. A visual qualitative assessment was performed in the source lidar dataset. Contracted to meet 1 meter (RMSE) horzontal accuracy LiDAR data accuracy determination shall employ the National Standard for Spatial Data Accuracy (NSSDA). Contracted to meet 15cm (RMSE) on open bare terrain if errors are normally distributed. Sanborn Map Company, Inc. 200901 Unknown vector digital data LiDAR Survey of Walton County, Florida, conducted in the summer of 2008 under a contract in support of NOAA. Unknown 200607 ground condition lidar scan data unknown The ABGPS, IMU, and raw Optech 3100 LiDAR data are integrated into the TerraScan post processor software. The resultant file is in a LAS binary file format. The LAS file version 1.1 formats can be easily transferred from one file format to another. It is a binary file format that maintains information specific to the LiDAR data (return#, intensity value, xyz, etc.). The resultant points are produced in the geodetic coordinates referenced to the NAD83 horizontal datum and GRS80 vertical datum. The date and time for each flight line can be determined using the Julian date and time. The Julian date is a continuous count of days and fractions since noon Universal Time on January 1, 4713 BCE on the Julian calendar. lidar scan data 20080615 lidar point cloud LAS 1.1 format Sanborn Map Company, Inc Andrew Lucero Sr. Project Manager mailing and physical address

1935 Jamboree Drive

Colorado Springs CO 80920 USA (719) 593-0093 (719) 528-5093 alucero@sanborn.com The unedited data are classified to facilitate the application of the appropriate feature extraction filters. A combination of proprietary filters are applied as appropriate for the production of bare earth digital terrain models (dtms). Interactive editing methods are applied to those areas where it is inappropriate or impossible to use the feature extraction filters, based upon the design criteria and/or limitations of the relevant filters. These same feature extraction filters are used to produce elevation height surfaces. The LiDAR mass points were delivered in American Society for Photogrammetry and Remote Sensing LAS 1.1 format. The header file for each dataset is complete as define by the LAS 1.1 specification. In addition the following fields are included: Flight Date Julian, Year, and Class. The LAS files do not include overlap. The data was classified as follows: Class 1 = Unclassified. This class includes vegetation, buildings, noise etc. Class 2 = Ground Class 9 = Water lidar point cloud LAS 1.1 format 2008 classified lidar datasets Conversion from Geodetic coordinates, NAD83 into State Plane coordinates (meters) and conversion from ellipsoid heights (meters) into orthometric heights (U.S. Survey Feet). classified lidar datasets 2008 projected and tiled LiDAR datasets LAS 1.1 format 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 for data storage purposes and Digital Coast provisioning: 1. The data were converted from State Plane Florida West 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. projected and tiled LiDAR datasets LAS 1.1 format 20110331 NOAA Coastal Services Center Clearinghouse Manager mailing and physical

2234 South Hobson Ave.

Charleston SC 29405 US 843-740-1210 clearinghouse@noaa.gov The NOAA National Geophysical Data Center (NGDC) received Lidar data files by ftp. The data received compressed containing LiDAR data from the NOAA Coastal Services Center. The data are currently being served via Digital Coastl at http://www.csc.noaa.gov/digitalcoast/. The data can be used to re-populate the system. The data are provided in LAS format. LAS format is an industry standard for serving LiDAR data. The data are exclusively in geographic coordinates, however, the datums used vary. Most are NAD 83, however some are in ITRF. Vertical systems include both ellipsoid (ITRF and NAD 83) and NAVD 88. For NAVD 88 values, Geiod 03 is primarily used; however, data received in NAVD 88 prior to 2003 was processed using Geoid 99. 20110513 DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Pamela Grothe Mailing and Physical Address

NOAA/NESDIS/NGDC E/GC1 325 Broadway

Boulder CO 80305-3328 USA (303) 497-6120 (303) 497-6958 (303) 497-6513 pamela.grothe@noaa.gov 7:30-5:00 Mountain Contact Data Center Point 0.0000001 0.0000001 Decimal degrees North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 Ellipsoid 0.001 meters Explicit elevation coordinate included with horizontal coordinates NOAA Coastal Services Center Clearinghouse Manager mailing and physical

2234 South Hobson Ave.

Charleston SC 29405-2413 843-740-1210 clearinghouse@noaa.gov Downloadable Data Any conclusions drawn from the analysis of this information are not the responsibility of the Coastal Services Center or its partners. This data can be obtained on-line at the following URL: http://www.csc.noaa.gov/lidar DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Pamela Grothe Mailing and Physical Address

NOAA/NESDIS/NGDC E/GC1 325 Broadway

Boulder CO 80305-3328 USA (303) 497-6120 (303) 497-6958 (303) 497-6513 pamela.grothe@noaa.gov 7:30-5:00 Mountain Contact Data Center Disclaimer While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. The National Geophysical Data Center serves as the archive for this LIDAR data. NGDC should only be contacted for this data if it cannot be obtained from NOAA Coastal Services Center. 20111119 20111119 20121119 NOAA Coastal Services Center Clearinghouse Manager mailing and physical

2234 South Hobson Avenue

Charleston SC 29405-2413 843-740-1210 clearinghouse@noaa.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998