gov.noaa.csc.maps:2007_NWFWMD_Jackson_Blue_m582 Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC) Merrick & Company 200705 LAS data Charleston, SC NOAA's Ocean Service, Coastal Services Center (CSC) http://csc-s-maps-q.csc.noaa.gov/dataviewer/viewer.html?missions=582&aoi=-85.212403,-85.004657,30.716709,31.005908 http://www.csc.noaa.gov/lidar http://www.csc.noaa.gov LIDAR-derived binary (.las) files containing points classified as bare-earth and canopy (first return) were produced for the 2007 Northwest Florida Water Management District - Jackson County, Florida lidar mapping project. The files were provided in a scheme of FDEM-derived 5,000 x 5,000 foot (1500 x 1500 meter) tiles. Horizontal mapping units are in UTM meters, vertical mapping units are in U.S. survey feet. The total mapping area covers 183 square miles of Jackson County, Florida. The purpose of the project is to produce accurate, high-resolution data for planning, analysis, and for use with other data sets. Merrick & Company obtained LiDAR data over approximately 183 square miles covering the majority of Jackson County, Florida. The LiDAR data has been processed to result in a data set that is suitable for the future generation of 2-foot contours. These data will be used to support FEMA's Map Modernization Program through the creation of high-resolution digital elevation models (DEMs). These DEMs support a variety of applications, including improved floodplain delineation, hydrologic and hydraulic modeling, hazard mapping as well as other planning activities. A footprint of this data set may be viewed in Google Earth at: ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/fl/nwfwmd/2007_NWFWMD_Jackson_County_Lidar.kmz The Lidar QA/QC Quantitative and Qualitative Assessment Report for this data set may be viewed at: ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/fl/nwfwmd/NWFWMD_QaQc_Final_Report.pdf 20070317 ground condition Complete As needed -85.212403 -85.004657 31.005908 30.716709 ISO 19115 Topic Category elevation None Bathymetry/Topography LIDAR digital surface model elevation bare earth canopy binary classified None US Florida Northwest Florida Water Management District Jackson 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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.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. Mr. Ron Bartel Northwest Florida Water Management District Director, Division of Resource Management mailing and physical address

81 Water Management Drive

Havana FL 32333 USA 850-539-5999 ron.bartel@nwfwmd.state.fl.us Microsoft Windows XP version 5.1 (Build 2600, Service Pack 2); ArcGIS Desktop 9.1; ArcGIS Workstation 9.1; MARS 4.0 Verification of attribute accuracy of LIDAR data involves the use of filtering techniques. Auto-filtering uses algorithms to reclassify data in the point cloud. Hand-filtering involves the use of a technician working in a graphic environment to reclassify the erroneous points that may remain in the LIDAR point cloud after auto filter. Calibrations of the LIDAR flightline data are performed; this process is known as boresighting. The flightlines are compared to evaluate both their relative and absolute accuracies. This dataset contains classified returns of the LIDAR sensor. The sensor data was verified in MARS software to ensure complete coverage. Horizontal accuracy is verified in three tests. During boresighting, adjoining flightlines are view in profile and hard edged features are observed and if necessary the flightlines are adjusted for good relative horizontal and vertical fit. The second test for horizontal accuracy is by comparing raw contours from each flightline against adjoining flightlines at specific points. The final test is the vertical LIDAR control report. Survey control points were used to validate the accuracy of the LIDAR surface model after automatic and hand filtering. This surface exceeds the NSSDA consolidated vertical accuracy specifications of 36.3 cm (1.19ft) at the 95% confidence level. 0.07 RMSEz (m) based upon comparison with 19 survey checkpoints. Merrick & Company 20070317 spreadsheet Aurora, CO Merrick & Company spreadsheet 20070317 publication date GROUND_CONTROL GPS control network for LIDAR acquisition and processing. Merrick & Company 20070317 point digital data Aurora, CO Merrick & Company digital data 20070317 ground condition LIDAR LIDAR points form the basis of the DTM surface. LIDAR data was collected using Merrick's ALS50 Phase 2 sensor. The raw data was verified in MARS software for complete coverage of the project area, and boresighted to align the flightlines. Raw data files were parsed into manageable client-specific tiles. These tiles were then processed through automated filtering that separates the data into different classification groups: error points, ground points, and canopy/building points. The data was next taken into a graphic environment to reclassify the erroneous points that may remain in the LIDAR point cloud after auto filter. LIDAR GROUND_CONTROL 20070611 Doug Jacoby Merrick & Company Director of Projects / Project Manager mailing and physical address

2450 South Peoria Street

Aurora CO 80014 U.S.A. 303-353-3903 303-745-0964 doug.jacoby@merrick.com 8 am - 5 pm, Mountain Time Zone, Monday thru Friday Call or email during business hours 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 projected UTM (NAD83, Zone 16) coordinates to geographic (NAD83) coordinates 2. The data were converted from NAVD88 heights to ellipsoid heights using Geoid03 3. The data were reclassified; class 5 (canopy) was reclassified to class 1 (unclassified) as class 5 did not accurately depict canopy but contained all non-bare earth points. 4. The LAS header fields were sorted by latitude and updated LIDAR 20110505 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. 20110610 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 Implicit coordinate Lidar points are attributed with the following classifications: 1 - unclassified 2 - ground (bare earth) Lidar intensity values range from 0-255. Lidar return values range from 1-3. Flight line numbers range from 1-19. All deliverables meet specifications in contract. LAS Files meet ASPRS Classification Standards. 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 Charleston SC 29405-2413 843-740-1210 clearinghouse@noaa.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998