gov.noaa.csc.maps:fl2006_volusia Volusia County Public Works Department 20060815 First Charleston, SC NOAA's Ocean Service, Coastal Services Center (CSC) http://www.csc.noaa.gov/ldart This dataset is the lidar data for Volusia County, Florida, approximately 1,432 square miles, acquired in early March of 2006. A total of 143 flight lines of Lidar data were acquired in eleven sessions between 2-8 March 2006. This dataset is comprised of 1,591 LiDAR files, based on the Volusia County 5,000' by 5,000' sheet index system, in the LAS file format. The raw data was collected at an average ground sample distance of 1-meter (3.3 ft), and the bare earth was classified and used as a basis for the 2006 Volusia Countywide Digital Orthophoto Project. Lidar was collected to support DTM development suitable to generate 1 foot contours that meet 2 foot contour accuracy specifications. This data is not intended for engineering, design, water modeling, or any other purposes other than as stated within this document. This data is intended for orthophoto rectification purposes only. The lidar data classifications in this data set are: unclassified, ground and high vegetation. NOTE: Please be aware that there are returns from the water surface that are classified as ground, as well as unclassified. The DEM was developed to support the 2006 Volusia Countywide Digital Orthophoto Imagery Project. The Minimum Technical Standard Report for Volusia County, FL may be viewed at: ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/fl/volusia 20060302 20060308 Publication date Complete As needed -81.680128 -80.733305 29.426977 28.612988 ISO 19115 Topic Category Elevation None Bathymetry/Topography LiDAR Terrain Model Elevation Surface Laser None US Florida Volusia County 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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.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. This data is not intended for engineering, design, water modeling, or any other purposes other than as stated within this document. This data is intended for orthophoto rectification purposes only. Arden Fontaine Volusia County Public Works Department Special Projects Manager Physical address

123 West Indiana Avenue, Room 402

Deland Florida 32720 USA 386-736-5965 386-740-5184 afontaine@co.volusia.fl.us 8:00 am - 4:30 pm Acknowledgement of the Volusia County Public Works Department would be appreciated in products derived from these data. The LiDAR DEM was developed in accordance with the contract LiDAR specifications. All elevation measurements within the bounding coordinates were used to derive this dataset. The intended horizontal accuracy is consistent with features on digital orthophotographs that meet National Map Accuracy Standards at a scale of 1:1200. The accuracy of the DEM has not been tested. The horizontal accuracy of the DTM/TIN is estimated to be at least 1.3 ft (39.62 cm) RMSE for unobscured points. The vertical accuracy of the TIN is 0.6 feet (18.28 cm) at the 95% confidence level for unobscured points. The user should exercise caution when working with mass points and breaklines within obscured/vegetation polygons as this data may not meet the accuracy requirements as set forth for well-defined points. The estimated vertical accuracy of obscured points is 0.7 feet (21.34 cm) at the 95% confidence level. Volusia County Public Works department Woolpert, Inc. 20060815 Unknown First Model Deland, Florida Volusia County Public Works Department External hard drive 20060815 Unknown Publication Date Ground Condition Unknown The LiDAR data was acquired using a Leica ALS50 from an altitude of 1,000-meters above ground level to provide an average ground sample distance of 1-meter. The scanner field of view was 44-degrees, and the scan rate was 33-hertz. First and last return data was collected along with the signal return intensity. Two redundant airborne GPS bases stations were utilized during the data acquisition with maximum line-of-sight distance between the base station and aircraft of 20-km. The LiDAR data was reduced using Grafnav (Waypoint Consulting) for GPS post-processing, PosProc (Applanix Crop) for IMU processing, ALS50 Post Processor (LH Systems) to initial LiDAR processing, TerraScan (Terrasolid) for initial point classification, and proprietary Woolpert developed software for refining the point classification and QC. The LAS files contain 3 classifications: 1 = default which contains non ground features such as buildings, cars, trees, bridges, etc.; 2 = bare earth; and 5 = non ground from first return which contains trees, power lines, etc.. 20060815 Chris O'Neill Woolpert, Inc. Technical Operations Manager Physical address

11315 Corporate Boulevard, Suite 115

Orlando Florida 32817 USA 407-381-2192 407-384-1185 chris.oneill@woolpert.com 8:00 am - 5:00 pm Dataset copied. C:\Dataload\2006 Volusia LiDAR DEM.LAS Unknown The NOAA Coastal Services Center (CSC) received the files in LAS format. The files contained Lidar intensity and elevation measurements. The data was in Florida State Plane Projection and NAVD88 vertical datum. CSC performed the following processing to the data to make it available within the LDART Retrieval Tool (LDART): 1. The data were converted from Florida State Plane East, Zone 0901 coordinates to geographic coordinates. 2. The data were converted from NAVD88 (orthometric) heights to GRS80 (ellipsoid) heights using Geoid 03. 3. The vertical unit of measure for the data was converted from feet to meters. 4. The LAS data were sorted by latitude and the headers were updated. 20080415 Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC) Coastal Elevation Mapping (CEM) Project Scientist Mailing and physical address

2234 South Hobson Ave.

Charleston SC 29405-2413 843-740-1200 tcm@csc.noaa.gov 0 Point Point 0.000000001 0.000000001 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 Point Point feature derived from LiDAR shot Woolpert, Inc. Intensity Measure of reflectance of Laser shot Woolpert, Inc 0 255 Refer to LAS Specification version 1.1 See process steps within this metadata record for specific methodology Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC) CEM Project Scientist Mailing and physical address

2234 South Hobson Ave.

Charleston SC 29405-2413 843-740-1200 tcm@csc.noaa.gov Downloadable Data Any conclusions drawn for the analysis of this information are not the responsibility of the Volusia County Public Works Department, the Coastal Services Center, or its partners. This data can be obtained on-line at the following URL: http://www.csc.noaa.gov/ldart DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Kelly Stroker Mailing and Physical Address

NOAA/NESDIS/NGDC E/GC1 325 Broadway

Boulder CO 80305-3328 USA (303) 497-4603 (303) 497-6958 (303) 497-6513 kelly.stroker@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. 20060815 20080423 Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC) CEM Project Scientist Mailing and physical address

2234 South Hobson Ave.

Charleston SC 29405-2413 843-740-1200 tcm@csc.noaa.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 This data is intended for orthophoto rectification purposes only. This data is data is not intended for engineering, design, or water modeling purposes.